PSYC 2030 Chapter Notes - Chapter 7: Intravenous Therapy, Wait List, Random Assignment

• School: York University
• Department: Psychology
• Course: PSYC 2030
• Professor: Rebecca Jubis

Document Summary

Is manipulated if simple random assignment is used to create equivalent groups. Matched groups design: if a matching procedure followed by random assignment is used. Ex post facto design: su(cid:271)je(cid:272)ts i(cid:374) the study are pla(cid:272)ed i(cid:374) the group (cid:862)after the fa(cid:272)t(cid:863) o their already existing subject charact. These experiments thrive on participant groups being as similar as possible. Is tested within-subjects each participant in the study experiences each lvl of the independent variable (measured repeatedly) If subjects participate in each condition just once, complete counterbalancing will be used. If participants are tested more than once per condition, reverse counterbalancing (abba0 could b used. Single factor multilevel designs: single factor studies that use 3 or more lvls. For ex: using all 3 levels resulting in the nonlinear effect, gives you a better overall picture of the effect of arousal. (mice arousal example) Can also test for specific alternative hyotheses a rule them out while supporting researchers hypothesis.