PSYC 201W Study Guide - Final Guide: Handedness, Operational Definition, Nicotine

• School: Simon Fraser University
• Department: Psychology
• Course: PSYC 201W
• Professor: Rose Vernon

Document Summary

Between-group designs: different groups are exposed to the different levels of the independent variable: posttest-only control-group design: design where there are two groups (control and experimental) and each undergo a posttest. The smaller the group, the less reliable internal validity randomization is. Without a pretest, it is difficult to tell groups. if the groups are indeed equal. Within group designs: participants are included in all conditions: within-participants posttest-only design: all participants receive all conditions, and a posttest is administered after each condition is administered. The participants act as their own control. Mixed designs: contains both between participants and within participants variables: pretest-posttest control-group design: pretest added to posttest-only control-group design as the within participants variable because all participants undergo a pretest and a posttest. May not be able to generalize to worked. Analysis of covariance to control for pretest differences.