CRCJ 3001 Chapter Notes - Chapter 10: Quasi, Random Assignment, Experiment

• School: Carleton University
• Department: Criminology and Criminal Justice
• Course: CRCJ 3001
• Professor: Susan Yamamoto

Document Summary

M/f) or in terms of time (ex. before & after treatment: produces 2 general categories of nonexperimental & quasi-experimental designs, b-s designs, aka nonequivalent group designs, w-s designs, aka pre-post designs. 10. 3 w-s nonexperimental & quasi-experimental designs: pre-post designs. Iv of a pre-post study threatened by variety of factors related to passage of time: unless factors are controlled or minimized by structure of research design, pre- post study approach the iv of a true experiment. A nonexperimental pre-post design: the pretest-posttest design, each individual in a single group of participants measured once before treatment. & once after treatment (o x o: ex. evaluating effectiveness of a new political tv commercial by assessing voters" attitudes towards a candidate before & after they view commercial. Involves measurements for one high school, not individual participants: ex. therapist monitors instances of compulsive behaviour in one client for 3 weeks before therapy & for 3 weeks after.