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science that seeks to explain behavior and mental processes |
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study of basic mental processes: sensation, perception, meaning |
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study of physical and chemical changes involved in behavior and mental processes |
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changes in behavior over time |
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uses statistics to analyze data |
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abnormal and normal behavior disorders |
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testing and diagnosing children |
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how people interact and influence each other |
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work productivity, satisfaction of workers |
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to study conscious experience and its structure, looking at each separate element |
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"to look within" method of structuralism- what people observe about |
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William James - study of how mind works in allowing an organism to adapt to environment |
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Skinner Watson - study observable behavior and why we do things - learn by reward and punishment |
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emphasizes activity of the nervous system, especially of the brain, the actions of hormones and chemicals |
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emphasizes the ways behavior is adapted for survival |
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emphasizes internal unconscious conflicts, involving sexual or aggressive instincts |
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emphasizes learning, especially with rewards and punishment |
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emphasizes mechanisms through which people receive, store, and retrieve info |
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emphasizes individual potential for growth and the role of unique perceptions |
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emphasis on the individual (America) |
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importance of group above individual (Japan) |
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specific testable statement |
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specific factors we are measuring |
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we are measuring what we say we are |
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an in depth explanation, resulted by research |
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watch things, record -limitations: people act differently while being watched, person watching has to be well trained, no bias, cant draw conclusions between cause and effect |
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- in depth examination of a specific subject - limitations: findings may not be a general representation of people - observer bias |
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- unable to interoperate things that are being seen - needs a more in-depth look, very rare - "man who mistook his woman for a wife" |
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administer a question to a large number of people, self reporting, asked to describe behavior, attitudes, or beliefs -limitations: validity has to do with wording the question, who is surveyed and who responds |
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examines relationship between variables and factors - describe data more fuly |
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shows how strong variables are related, in certain direction -limitations: shows relationship but not why or how, doesnt decribe cause and effect, correlation DOES NOT equal causation - 0-1.00 + or - as one variable increases,the other decreases |
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only way to test cause and effect, manipulate one variable (ind) to see effect of another variable (dep) - ex. hours spent studying (ind), grade on exam (dep) |
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given the experience of interest |
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does not receive experience |
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other factors that might influence the dependent variable |
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participant/experimenter expectations |
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placebo effect, experimenter bias, use double-blind study to reduce impact |
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when both the experimenter and experimentee don't know which group (either control or experimental) they are in |
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everyone has equal chance of being chosen |
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chosen so the participants characteristic match the population |
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use math to draw conclusions about what data means - something is statistically significant when the odds are greater than chance |
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a network of billions of cells that detects what is going on inside or outside the body and guides appropriate responses |
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3 functions of nervous system |
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-receive info (input) - integrate the info with past experiences (processing) - to guide actions (output) |
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specialized cells of the nervous system that send and receive messages |
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- hold neurons together and help them communicate with each other - capable of forming new, specialized cells |
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a fiber that carries signals away from the cell body |
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fibers that receive signals from the axon of other neurons |
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the electrochemical impulse or message that is sent down an axon and stimulates release of a neurotransmitter |
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a short recovery time after cell firing, during which the cell cannot fire again |
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a chemical that transfers messages across synapses |
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the tiny gap between the axon of one neuron and the dendrites of another |
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proteins on the cell memebrane that recieve chemical signals |
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communication between neurons |
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- action potential shoots down the axon, away from the soma - a neurotransmitter is released into the synapse, and the dendrites detect it - if there is a receptor for this neurotransmitter on the dendrites, the neurotransmitter and receptor bind = an electrochemical signal - if the signal is strong enough, it spreads down the dendrites and across the soma or the next neuron, and cycle begins again |
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central nervous system (CNS) |
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the brain and spinal cord |
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peripheral nervous system |
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the part of the nervous system that sends messages to and from the CNS |
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-subsystem of the peripheral nervous system - transmits info form the senses to the CNS and carries signals form the CS to the muscles that move the skeleton |
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-subsystem of the peripheral nervous system -carries messages between the central nervous system and the heart, lungs, and other organs and glands in the body |
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sympathetic nervous system |
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-subsystem of the autonomic nervous system - readies the body for vigorous activity, flight or fight response |
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parasympathetic nervous system |
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influences activity related to the protection, nourishment, and growth of the body, restarts system and calms you down |
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clusters of nerve cell bodies in the central nervous system |
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bundles of axons that travel together |
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the part of the CNS that receives info from the senses, passes these signals to the brain, and sends messages from the brain to the body |
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simple, involuntary, unlearned behaviors directed by the spinal cord without instructions from the brain |
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EFG, PET, SPECT, MRI, TMS |
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- portion of brain - continuation of spinal cord - contains: medulla, reticular formation, cerebellum |
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- in hindbrain -controls vital automatic functions - regulates breathing, heart rate, blood pressure |
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- in hindbrain - collection of fibers and cells - regulates arousal and attention - also extends into midbrain |
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- in hindbrain -controls finely coordinated movements and certain cognitive processes, balance |
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- small region between hindbrain and forebrain - replays sensory signals to forebrain - creates automatic responses to certain stimuli - helps produce smooth movements |
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- responsible for the most complex aspects of behavior and mental life - includes: thalamus, hypothalamus, amygdala, hippocampus, cerebral cortex, corpus callosum |
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- a railroad spike went through his jaw and through his frontal lobe - removed frontal lobe - had a complete personality change and became a jerk |
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- in forebrain - interprets and relays sensory info |
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-in forebrain - regulates hunger, thirst, and sex drives |
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- in forebrain - connects sensations and emotions |
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- in forebrain - forms new memories |
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- outer surface of the forebrain - analyzes sensory info, controls voluntary movements, abstract thinking - contains: gyri, sulci, sensory cortex, motor cortex, association cortex |
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- cerebral cortex -ridges on the brain |
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- cerebral cortex - valleys |
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- in forebrain - transfers info between the 2 cerebral hemispheres |
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- part of cerebral cortex - located in the parietal, occipital, and temporal lobes - receives info form the skin, eyes, and ears - contains: auditory cortex, visual cortex, somatocensory cortex |
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- sensory cortex - temporal lobe - hearing |
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- sensory cortex - occipital lobe - vision |
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- sensory cortex - parietal lobe - interprets sensations -humuculus |
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what we would look like if the parts of our body were the sizes representing how sensitive it is |
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- frontal - temporal - parietal - occipital |
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planning, inhibition, organization of behavior, executive functioning |
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processing auditory input: speech, visual recognition |
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integrating, processing things in environment, motor output |
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- part of cerebral cortex - controls voluntary movement |
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- part of cerebral cortex - integrate sensory and motor info |
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understand sarcasm and irony |
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-production of language - Broca Aphasia |
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can understand but can't produce language |
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- receptive language - Wernicke Aphasia |
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a property of the CNS that hasthe baility to stengthen connections at syanpses, as well as to establish new connections |
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- left hemisphere: language and controls right side of the body - right hemisphere: recognizes faces and controls left side of body - connected by corpus collosum, if severed can see things on left side of visual field but cannot name it |
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-chemical that transfers info across the synapse as a result of an action potential - 3 types: small molecules, peptides, gases |
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- nerotransmitter - movement, memories - Alzheimer's |
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-neurotransmitter - mood, arousal, learning - depression |
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- neurotransmitter - mood, impulsivity - depression, aggression |
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- neurotransmitter - mood, movement, pleasure - Parkinson's |
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- neurotransmitter - inhibitory, sleep - anxiety, epilepsy |
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- neurotransmitter - memory - damage after stroke |
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- neurotransmitter - pain control |
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- adult brains can't replace damaged cells - fetal brain tissue grafts - nuetral stem cells - mental and physical exercise regimens |
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- directed by brain - glands communicate via hormone secretion into the bloodstream - target organs have specific receptors to detect specific hormones - hypothalamus controls the pituitary gland |
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controls endocrine system |
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- threat! - hypothalamus - pituitary gland - ACTH (adrenocorticotropis hormone) - adrenal gland - cortisol |
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- REM sleep - slow-wave sleep |
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- paradoxical sleep - dreaming - muscles are paralyzed |
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- Stages 1 & 2 - Stages 3 & 4 - REM - Stage 2 |
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respiration and heart rate slows, blood pressure decreases, brain waves become slower and higher |
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- brain waves are slow and high - difficult to awaken |
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- insomnia - narcolepsy - sleep apnea - Sudden Infant Death Syndrome (SIDS) - sleepwalking - nightmares - night terrors - REM behavior disorder |
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incapability to fall alseep |
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go from awake to REM sleep |
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stop breathing briefly while sleeping and wake up and start again |
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Sudden Infant Death Syndrome (SIDS) |
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- most common cause for infant death - accidental suffocation |
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- non-REM sleep - common in childhood -> grow out of it |
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- occurs during stage 4 - wake up terrified but won't remember - sleepwalking |
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- muscles paralyzed during regular REM - muscles act out dreams - can be treated with medication |
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- no sleep = impact on judgement, reaction time, ability to learn - can cause death - microsleeps |
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when you fall asleep for seconds at a time without realizing it |
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importance of non-REM sleep |
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- restores energy stored in the brain and body - consolidates new learning |
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- too little REM sleep causes REM rebound - restores our sensitivity to norepinepherine - creates and strengthens synaptic connections |
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- several each night - occur during REM sleep - daytime activities may influence the content of dreams (lucid dreaming) - dream for: wishfulfillment, activation synthesis theory |
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sleeper is aware that they are in a dream while dreaming |
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Activation Synthesis Theory |
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- meaningless byproducts of REM sleep - hindbrain arousal during REM ceates random messages that activate the brain, especially the cerebral cortex |
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translate external information into nervous system activity |
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the process of turning sensation into meaningful experiences |
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- each system take in a specific type of energy - energy must be modified by an accessory structure |
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- process of converting energy into activity - receptors initiate an action potential - sensory neurons deliver message to the brain - thalamus processes the info, then sends it to the cortex for additional processing |
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- light and sound energy are in the form of waves |
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- wavelength - frequency - amplitude - determine what is sensed |
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the distance between peaks in a wave of light or sound |
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the number of complete waves,or cycles, that pass a given point per unit of time |
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the distance between the peak and the baseline of a wave |
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translates the physical characteristic of a stimulus into a pattern od neural activity |
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respond to most changesinteh system |
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a decreasing level of responsiveness to a constant stimulus |
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minimum amount of stimulus energy that can be detected 50% of the time |
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- sponatneous, random firing of nerve cells that occur because the nervous system is always active - may be mistakena as a stimulus |
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internal rule a person uses to decide whether or not to respond to a stimulus |
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what determines the report of a near threshold stimulus |
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- ability to detect a stimulus - influenced by internal noise, stimulus intensity, and sensory capacity |
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- the smallest noticeable difference is in proportion to the original stimulus |
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Just-Noticeable Difference (JND) |
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- the smallest detectable difference ina stimulus - differs between senses |
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- light - sensation depends on intensity and wavelength |
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- the eye - accessory structures modify incoming light waves |
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muscles adjacent to the lens cause it to change shape to focus images at different distances |
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converting light to images |
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- retina - photoreceptors - rods - cones |
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surface atthe back of the eye onto which light rays enter the eye |
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convert light energy to neural activity |
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- extremely sensitive to light - unable to discriminate color - dark adaptation |
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- contain 3 kinds of light sensitive chemicals - discriminates color - more light-sensative than rods |
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- rods and cones connect with bipolar and ganglion cells in the retina - axons of ganglion cells form the optic nerve (half of optic nerve fibers cross over theoptic chiasm) - optic nerve synapse in the thalamus - thalamus sends info to the occipital lobe - primary visual cortex sends info to association areas of the brain |
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bundle of fibers that carries visual info to the brain |
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- hue - saturation - brightness |
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the essential color determines by the dominant wavelength of a light |
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the overall intensity of the wavelengths making up light |
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- Trichromatic theory - Opponent-process theory |
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- mixing blue, green, and red light produces all colors - evidence: 3 types of cones in the retina; color is determined by the ratio of cones' activities |
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- color-sensitive elements are organizedin pairs - pairs inhibit each other - pairs: red-green, blue-yellow, black-white |
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- lack of one or more of the color-sensitive pigments in the cones - more common in males |
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- cornea - pupil - iris - lens |
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the curved, transparent, protective layer through which light rays enter the eye |
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an opening in the eye, just behind the cornea, through which light passes |
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- part of the eye that gives it its color - adjusts the amount of light entering it |
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part of the ye directly behind the pupil |
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a repetitive fluctuation in the pressure of a medium such as air |
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a psychological dimensionof sound determined by the maplitude of a sound wave |
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- how high or low a tone sounds - depends on frequency of a sound wave |
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the quality of a sound that identifies it |
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- the crumpled part of the outer ear - collects sound waves |
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- tightly stretch membrane inthe middle ear that generates vibrations that match the sound waves striking it - also known as tympanic membrane |
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a fluid-filled spiral structure in the inner ear in which auditory transduction occurs |
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floor of the fluid-filled duct that runs through the cochlea |
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bundle of axons that carries messages fromthe hair cells of the cochlea to the brain |
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- Place theory - Volley theory |
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states taht hair cells at a particular place on the basilar membrane respond to a particular frequency of sound |
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- states that the firing rate od a auditory nerve matches a sound wave's fequency - also called frequency-matching theory |
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conversion of sound frequencies into neural activity |
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frequencies are coded by the location of the hair cells receiving the greatest stimulation(place theory) and by the combined firing rate of neurons (volley theory) |
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- auditory nerve to the thalamus - thalamus to primary auditory cortex - auditory cortex examines patterns of info from the auditory nerve, allowing us to sense loudness, pitch, and timbre |
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stimulus is direct pressure or bending of hairs |
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- intensity of the stimulus affects firing rate of individual neurons and the number firing - location of touch is coded by location of nerves |
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most neurons responding to touch also respond to changes in temperature |
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- free nerve endings that start at the spinal cord and end and the skin - axons of pain neurons release neurotransmitters at the spinal cord and the skin - |
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congenital insensitivity to pain |
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- A-delta Fibers - C-fibers |
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- 1st activated - sharp pain, cutting sensations |
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- 2nd activated - chronic dull aches, burning sensations |
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Gate Control Theory of Pain |
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- spinal cord is able to shut off pain communication to the brain - competing input form other senses can take over pain pathways - brain is able to block signals at the spinal cord - analgesia |
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- reduction in the sensation of pain in the presence of a normally painful stimulus - produced by endorphins |
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how we put meanings to our feelings |
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Principles of Perceptual Organization |
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- Figure and Ground - Grouping |
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- Certain objects or sounds automatically become identified as figure, whereas others become meaningless background - ex: You see a person standing against a building, not a building with a person-shaped hole in it |
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- Properties of stimuli lead us to automatically group them together - proximity, similarity, continuity, closure, common region, connectedness - ex: People who are sitting together, or who are dressed similarly, are perceived as a group |
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the closer the objects or events are to one another, the more likely they are to be perceived as belonging together |
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similar elements are perceived to be part of a group |
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sensations that appear to create a continuous form are perceived as belonging together |
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- we tend mentally "fill in" missing parts of incomplete objects - the gaps are easy to see but the tendency to link disconnected parts can be so strong that you may perceive faint connections that are not actually there |
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- stimuli located within some boundary tend to be grouped together - the boundary can be created by an enclosing perimeter |
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stimuli that are connected by other elements tend to be grouped together |
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perception of distance, allowing us to experience the world in 3 dimensions |
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biological depth perception |
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- accommodation cues - conversion - Binocular Disparity |
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a depth cue resulting when the eyes rotate to project the image of an object on each retina |
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a depth cue based on the difference between the retinal images received by each eye |
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stimulus cues for depth and distance |
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- interposition - relative size - linear perspective |
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closer objects block the view of things farther away |
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if 2 objects are assumed to be about the same size, the object producing a larger image on the retina is perceived as closer than the one producing a smaller image |
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- when parallel lines recede into the distance they appear to converge as a single point - closer together 2 converging lines are, the greater the perceived distance |
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- certain things stay constant, regardless of changes in their image - size - shape - brightness |
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- relies on specific, detailed information, from the senses - feature detector cells identify basic features that are combined to create the sensory experiences - ex: recognize dog by its features |
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- experience, context, and expectations are imposed on a stimulus - schemas - ex: in the dark a blob pulling a leash is recognized as a dog because that it is where we expect a dog to be |
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mental representations of what we know and expect about the world |
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- a stable change in behavior due to experience - fundamental principles are: classical conditioning, operant conditioning |
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- why Pavlov's dogs salivate when there isn't any food - food presented, dog salivates - tone presented, dog doesn't salivate - food and tone presented, dog salivates... - ... tone presented, dog salivates |
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before classical conditioning |
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- unconditioned stimulus (UCS): food = unconditioned response (UCR): salivation - neutral stimulus: tone = orienting response: head turn |
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during classical conditioning |
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conditioned stimulus (CS): tone + UCS: food = UCR: salivation |
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after classical conditioning |
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CS: tone = conditioned response (CR): salivation |
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conditioned responses over time |
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- CS and UCS are repeatedly paired, the CR is gradually acquired - continued pairings strengthen the CR |
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what happens if you present the CS repeatedly, but not the UCS |
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- extinction - spontaneous recovery - reconditioning |
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present CS after time delay |
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- present the CS and UCS again - quicker than original conditioning |
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Definition
- CS is triggered by a similar stimulus - ex: Little Albert is scared of anything white when it was associated with a loud sound |
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Definition
different among similar stimuli |
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Term
forming and strengthening conditioned response (CR) |
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Definition
- timing - predictability - intensity - attention - biopreparedness - second-order conditioning |
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Definition
CS immediately precedes the UCS |
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Term
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Definition
CS always signals the uCS, and only the UCS |
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Term
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Definition
CS always signals the uCS, and only the UCS |
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Term
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Definition
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Term
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Definition
when multiple stimuli are present, the most closely attended becomes the CS |
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Term
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Definition
natural tendency for certain stimuli to become a CS |
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Term
second-order conditioning |
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Definition
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Term
classical conditioning in action |
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Definition
- bomb-sniffing dogs - phobias |
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Term
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Definition
- acquisition - treatment - systematic desensitization - habituation |
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Term
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Definition
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Term
systematic desensitization |
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Definition
- planned way to break phobia - start with the least threatening form of the phobia and work way up |
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Term
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Definition
- after repeated pairings you no longer experience UCS |
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Term
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Definition
- habituation - opponent-process theory |
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Term
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Definition
- environmental stimuli - once you enter the environment your body starts to react - take more cause your body hasn't started to react yet = overdosing - overdosed mostly caused by changing environment |
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Term
operant (instrumental) conditioning |
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Definition
- Thorndike's Puzzle Box - Skinner Box |
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Term
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Definition
- cat gets food if it presses a certain lever - law of effect |
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Term
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Definition
if a response made in the presence of a stimulus is rewarded, it is likely to happen again when the stimulus is presented |
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Term
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Definition
- dog is put in a box and one side get electrified - the dog jumps over as a reaction - key in investigating operant conditioning |
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Term
components of operant conditioning |
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Definition
-operant response (OR) - reinforcer - escape conditioning - avoidance conditioning - stimulus discrimination - stimulus generalization |
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Term
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Definition
has an effect on the world |
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Term
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Definition
- increases behavior, never decreases - stimulus increases the probability that the OR will reoccur |
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Term
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Definition
increases behavior by giving something (+) |
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Term
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Definition
increases behavior by taking something away (-) |
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Term
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Definition
- process of learning a response to stop an aversive stimulus - ex: dog can jump over to the other side of the box to stop the shock |
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Term
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Definition
- process of learning a response to avoid an aversive stimulus - difficult to unlearn because it is reinforced by fear reduction - ex: dog hears tone before the floor is shocked, learns to jump right after it hears the tone - escape first, avoidance second |
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Term
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Definition
- when a response is performed in the presence of one stimuli, but not another - response is under stimulus control - ex: between Monet and Picasso, only hit bar for Monet and ignore Picasso |
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Term
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Definition
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Term
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Definition
- perform a response in the presence of a stimulus that is similar to, but not exactly like, the stimulus that has worked in the past - conditioned neuroses - ex: dogs would get food when circle was presented by pressing a bar, but when an ellipse was shown they got nothing; made the circle and ellipse more alike to each other; then unrecognizable and the dogs went crazy |
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Term
forming and strengthening operant responses (ORs) |
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Definition
- shaping - secondary reinforcement - time - intensity - schedules of reinforcement |
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Term
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Definition
reinforcing successive approximations |
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Term
successive approximations |
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Definition
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Term
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Definition
if you pair neutral stimuli with reinforcing stimuli, the neutral stimuli becomes reinforcing |
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Term
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Definition
works best with minimal delay before reinforcer |
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Term
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Definition
conditioning with larger reinforcer |
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Term
schedules of reinforcement |
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Definition
- continuous reinforcement schedule - partial (intermittent) reinforcement schedule - extinction - partial reinforcement extinction effect |
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Term
continuous reinforcement schedule |
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Definition
- impractical - can't always be there to give reinforcement - impractical to do it for every single behavior - run out of reinforcement |
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Term
partial (intermittent) reinforcement schedule |
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Definition
- fixed ratio (FR) - variable ratio (VR) - fixed interval (FI) - variable interval (VI) |
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Term
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Definition
- reinforcement follows a fixed number of responses - i.e., FR 10 |
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Term
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Definition
- reinforcement follows a variable number of responses - i.e., VR 30; gambling |
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Term
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Definition
- reinforces the first response occurring after a fixed time has past after last reward - i.e., FI 60 |
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Term
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Definition
- reinforces the first response after some period of time, which varies - i.e., VI 20 |
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Term
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Definition
- failure to reinforce a response will eventually extinguish it - extinction burst - spontaneous recovery -Partial Reinforcement Extinction Effect |
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Term
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Definition
increase in duration and severity |
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Term
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Definition
- cycle starts all over - ex: kid stop throwing tantrums when wanting a candy, the throws one tantrum, you give them the candy, and the cycles starts over |
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Term
Partial Reinforcement Extinction Effect |
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Definition
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Term
what makes a reinforcer reinforcing? |
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Definition
- satisfy basic physiological needs - "pleasure" center" in hypothalamus - stimulation causes a release of dopamine |
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Term
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Definition
- reduces frequency of an operant behavior - presenting an unpleasant stimulus - removing a pleasant stimulus |
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Term
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Definition
- does not erase undesirable behavior - produce unwanted effects - must be given immediately after the target behavior each time it is performed - corporal punishment - lets you know you did something wrong, but doesn't tell you the desired action |
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Term
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Definition
- physical punishment - escalation effect |
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Term
guidelines for using punishment |
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Definition
- indicate why the punishment is being given - the behavior is being punished, not the person - punishment must occur immediately after every occurrence of the target behavior - identify appropriate alternative behaviors - reinforce those alternative behaviors |
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Term
operant conditioning in action |
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Definition
- parenting - formation of gender roles - behavior modification |
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Term
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Definition
- stop trying to exert control after experience tells you, you have no control - ex: the dog is put in the box - both sides are electricuted - stopped jumping from side to side and laid down - turned off one side, still laid, turned off both sides, still laid |
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Term
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Definition
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Definition
- group A: food placed in goal box - group B: no food - group C: food only on 11th day - group C rats got to the food - developed a cognitive map of the maze |
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Term
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Definition
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Term
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Definition
- learn by watching others - importance of models - also called social learning - vicarious conditioning |
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Term
Bandura's Bobo Doll Experiment |
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Definition
- 4 conditions: aggressive model rewarded, aggressive model punished, non-aggressive model, no model - child left alone in room with Bobo Doll - kids more aggressive than the others after seeing the aggressive model rewarded |
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