PSYC 308 Lecture Notes - Lecture 4: Naturalistic Observation, Random Assignment, Developmental Psychology
Document Summary
Observing specific behaviours in a controlled setting. Watching behaviours and coding behaviours in a qualitative method. Concerns when using multiple people to code behaviours. Refers to the degree of agreement between raters. Train raters to ensure that they code similarly. Can we predict one variable based on the knowledge of another variable. The one you are using it to predict. Indicates how well one variable can predict another variable. Closer to -1 or +1, stronger relationship. Problems with drawing causal conclusions with correlational studies. Something else is changing both predictor and criterion. Playing violent video games is the predictor. Family trouble causes both aggression and increase in playing violent games. Aggression leads to increase in using violent video game. Violent video game can lead to aggression. Manipulate independent variables and measure dependent variables. Randomly assignment half samples to control group and half to experimental group. All sample participate in the control group first then in the experimental group.
