PSYC 217 Lecture Notes - Lecture 1: Demand Characteristics, Pain Scale, Likert Scale
Document Summary
Strength of iv and sensitivity of dv"s (ex: violence/aggression and video games) Strong iv: good shot at creating a big change in dv (immersive manipulation: play series of particularly violent missions) Weak iv: good at making ne distinctions in dv"s but usually can"t create big effects (thought manipulation: think about playing atari boxing) Tough dv: resistant to change (willingness to stab someone) How do we design the study to maximize the chances that we"ll be able to. Experimental control, including ruling out potential alternative explanations (e. g. , expectancy effects, demand characteristics) Operational de nition of iv manipulation-> straight forward > staged. Operational de nition of outcome variable -> self-report -> behavioural -> physiological. Present participants with something that will in uence dv. Examples: music and mood or movies and heart rate. Make participants feel like they"re in the situations. Using confederates to make participants feel excluded. Downside is they can be too arti cial and demand characteristics.
