PNB 3RM3 Lecture Notes - Lecture 9: Operationalization, Dependent And Independent Variables

• School: McMaster University
• Department: Psychology, Neuroscience & Behaviour
• Course: PNB 3RM3
• Professor: Jennifer Ostovich

Document Summary

Mediating variables explains a relationship between two variables. No but we can es tablis h temporal precedence us ing longitudinal des igns we can rule out 3rd variables us ing multiple regres s ions des igns. We can us e patterns of res ults to help us draw pars imonious caus al conclus ions. Meas ure variable at time 1 and time 2 to es tablis h temporal precedence. Explored the relation between the preference for violent tv and aggression. Measured tv preference and aggression at both times. Time 1: asked parents for list of child"s 3 favourite tv shows and were rated by judges if violent or not. Time 2: asked the teens themsleves their 4 favourite shows and were again rated by judges. Time 1: self report, parent-report and peer nominations. Time 2: self-report and peer nominations cross sectional correlations: C orrelation s correlations between variables during the same time.