PSYC 3402 Lecture Notes - Lecture 2: Dependent And Independent Variables, Institutional Review Board, Operational Definition
14 May 2016
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Document Summary
Correlational research: associations/ relationship between variables; asking whether two or more factors are naturally associated; associations not causation, correlational coefficient: measures the strength and direction of relationships btw variables a. i. a. ii. Absolute value tells us the strength of the valuable; positive or negative tells us the direction of association a. ii. 1. a. ii. 2. Advantage: allows us to study variables that cannot be manipulated/induced and variables that cannot be studied in a lab experiment(e. g. race, gender) Disadvantage: not indicative of cause: experiment: searching for cause and effect, lab and field experiments: a. i. Independent variable: experimental factor that researchers manipulate a. i. 3. Dependent variable: factor being measured; depends on manipulation of independent variable a. i. 4. Control and experimental groups: only difference is that experimental group is inclusive of the independent variable. Random assignment: equalizer; process of a. i. 4. a. assigning participants to the conditions of an experiment such that all persons have the same chance of being in a given group(control or experiment) a. i. 4. b.
