PSYC 201W Lecture Notes - Lecture 5: Dependent And Independent Variables, Psych, Institute For Operations Research And The Management Sciences

• School: Simon Fraser University
• Department: Psychology
• Course: PSYC 201W
• Professor: george alder

Document Summary

Variable: any factor or attribute that can assume two or more values. Quantitative variable: represents properties that differ in (cid:862)a(cid:373)ou(cid:374)t(cid:863) such as height, weight, degree of shyness, time spent learning a task, and blood alcohol levels on a. Levels from low to high and different values reflect the amount. Discrete variable: between any two adjacent values, no intermediate values are possible. Loudness of noise from a movie: like 1, 2, 3 not 1. 23 or 5. 836, no intermediate valuable possible, 5, 7, 12 children (but not 5. 7 children, whether the person has sciz or not (no in between) Continuous variable: between any to adjacent values, further intermediate variables are possible: 4. 1, 4. 111, height, weight independent variable: presumed causal factor in a cause-effect relation between two variables in an experiment research manipulates it reaction time. A mediating variable is a variable that helps to explain why an independent variable influences a dependent variable.