To collect antecedent, behavior, and consequence at home and at school

Teacher daily report/parent daily report

Estimate of prevalence & frequency; BUT Overestimate prevalence, underestimate frequency.

Summarize session data as % of intervals coded/intervals in session

Underestimate prevalence & frequency; increase behavior.

Summarize session data as % of intervals coded/intervals in session

Discrete; unbiased for prevalence; underestimate frequency

Occurrence or nonoccurrence is recorded

Set MTS interval by less than IRT (inter response time or time between responses) & bout length

Summarize session data as % of intervals occurrence in session/total intervals in session

Pla-check (Risley)

Whole group is scanned

3 min intervals (Risley)

Record # of children meeting definition (i.e., engaged)

Repeat

Can rotate through target children & peers for micro norms

Time is artificially broken into units called sessions

Stage 1 Inter-session

-Define pools of all possible observation sessions

-Select representative sample reflective of the entire time period of interest

Stage 2 Intra-session

-Observe variables and dimensions of interest
-State, event, combined

Convenience sample

Systematic sample