PS288 Lecture 5: ch 5 ps288
Document Summary
02/11/2016: two groups, one receives treatment and one doesn"t, compare performance of groups immediately before and after treatment. Random assignment to groups: controls systematic differences between groups: assess intervention by the differences between groups after treatment. Combined designs: combine group and single case designs. Combined control group design and multiple baseline design. Randomly assign clients to one of two groups: immediate treatment or waiting list. Multiple baseline: treatment after 1 month of baseline (immediate group) or 4 months of baseline (waiting group) Strengths: good when focus of behaviour change is for a large group, control group can provide valuable info, permit analyses of treatment for different subgroups of people and different subject characteristics. Limits: focus on group averages make it difficult to assess change within any one individual (cid:4) Has the behaviour actually changed: single case designs. Three characteristics of data to look at across phases. Compare behaviour on last day of one phase with first day of next phase.