PSYC 217 Lecture Notes - Lecture 2: Repeated Measures Design, Demand Characteristics, Observational Error
Document Summary
Friday lab - go to scrf room 210. Design allowed researchers to see changes in scores due to iv (playing vs. watching games) Showing equivalence of groups in pretesting = more evidence to support claim that. Participants exposed to both conditions almost at the same time. Associated with single attitudinal or behavioural preference as dv. Which one was more fun? which one made you feel more aggressive? which one would you give to your 5 year old child? . Participants are exposed to all experimental conditions. Severe restriction of research questions and dv"s. Problems with repeated-measures (on top of demand characteristics) Carryover e ects = order e ects -> contrast e ects -> fatigue e ects -> practice. Participants response in one condition is a ected by having been in other conditions. The e ects of one condition carry over to others. Many ways to get around these issues (e. g. counterbalancing).
