PSYC 200W Chapter 10: ch10
16 Jan 2019
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One-way designs: only one independent variable is manipulated, two-group experimental design: 2 levels of independent variable, assigning participants to conditions. Randomized group design: b/w subjects design; randomly assigned a condition: matched subjects design: matched into blocks on basis of a variable researcher believes to be relevant. Repeated measures design: w/i subject; each subject in all experimental conditions: posttest and pretest-posttest designs. Posttest-only design: dependent variable measured only after experimental manipulation has occurred. Pretest-posttest design: measure dependent variable before and after independent variable manipulation. Disadv pretest sensitization: factorial designs: 2+ independent variables manipulated, factors: independent variables, factorial nomenclature -- "a x b factorial design, assigning participants to conditions. Info on separate and combined effects of the independent variables. Randomized groups factorial design: completely randomized: matched factorial design: first matching into blocks on some variable that correlates with the dependent variable; #participants in each block is equal to the number of experimental conditions.
