SOCPSY 1Z03 Lecture Notes - Lecture 2: Internal Validity, Random Assignment, Dependent And Independent Variables

• School: McMaster University
• Department: Social Psychology
• Course: SOCPSY 1Z03
• Professor: glav

Document Summary

Research methods: causal relationship between variables, independent variable has an effect (x) on the dependent variable (y, extraneous variables (z) variable that may effect (x) or (y, causality: temporal order, co-variation (association or correlation) but correlation. =/= causation: spuriousness: when an apparently causal relationship between 2 variables, 2 types of validity: 1. Internal validity: when a causal relationship is properly demonstrated. External validity: when a causal relationship can be generalized to a broader pop. Or setting: two features to help establish causality: manipulation of iv and random assignment to levels (ex. Control group vs experiment group) of the iv: other experimental terms: treatment vs control group, field vs laboratory experiments, more challenges to experimental designs: Experimenter effect: the experimenter wants to see certain results so they. Survey methods: procedure for collecting info by asking members of a pop.