PSYCH291 Lecture Notes - Linear Regression, Operational Definition, Vulgate
Document Summary
Research that examines an association between 2 measured variables (neither variable is manipulated) Can support association claims, not causal claims. Manipulate one variable and measure the other. Multiple linear regression: a statistical approach to ruling out confounds. Measuring variables at different times for the same participants. E. g. measuring preference for violent tv in 3rd and 13th grade, and peer-rated aggression in 3rd and 13th grade. Correlation of variables with a time lag between them. Tv violence in 3rd grade vs tv violence in grade 13. Looks at the correlation between metrics in that time frame. Tv violence in 3rd grade vs aggression in 3rd grade. Crossing variables of interest over a time lapse. E. g. tv violence in 3rd grade vs aggression in grade 13. Boys have a generally higher preference for violent tv and aggression. Girls have lower preference for violent tv and aggression. Across both age groups (grade 3 and grade 13)
