Term
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Definition
| Not of interest to hypothesis, but may have an effect on measurements. |
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Term
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Definition
| Extraneous Vs that covary with variables of interest |
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Term
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Definition
-Participant V.: personal characteristics/ experiences
-Researcher V.: behaviour
-Environmental V.: aspects of environment
-Measurement V.: aspects of measurement procedure. |
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Term
| Controlling for Error Variability |
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Definition
Randomise ext. Vs.
Eliminate ext. Vs.
Keep ext. Vs. constant
Balance ext. Vs.- vary equally across all conditions |
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Term
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Definition
Biased behaviour based on interpretation of the aims of the study.
Pleasing vs. annoying experimenter
Reactivity effect: act differently when being observed.
Social desirability: behaving to match socially desirable ideals.
Experimenter expectancies: reacting to unintended behaviour of experimenter. |
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Term
| Do the scores contain random error? |
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Definition
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Term
| Do the scores reflect the component variable? |
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Definition
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Term
| Does the variable reflect the hypothetical construct? |
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Definition
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Term
| Does the relationship reflect the variables we think it reflects? |
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Definition
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Term
| Does the relationship generalize beyond the study? |
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Definition
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Term
| Do the results generalize to natural behaviours and situations? |
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Definition
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Term
| Do the results generalize to other time periods? |
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Definition
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Term
| Controlling Demand Characteristics |
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Definition
Single/double-blind.
Deception.
Experimental realism.
Conceal experiment.
Unobstructive measures. |
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Term
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Definition
How consistent a study or measuring device is.
Depends how much manipulations and measurements are free from error. |
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Term
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Definition
| Extent to which we are measuring what we intend- accuracy. |
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Term
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Definition
-Content validity: extent to which operational definition measures component variable.
-Construct Validity: Extent to which variables reflect hypothetical construct. |
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Term
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Definition
| Extent to which observed relationship is between the variables of interest. |
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Term
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Definition
Extent to which observed relationship can be generalized.
-Ecological v.: to real life.
-Temporal v.: across time. |
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