PSYB01H3 Chapter 8: Chapter 8
Document Summary
Confounding and internal validity researcher manipulates independent and measures how dependent has changed confounding variable is a variable that varies along with the independent variable, a third variable that can account for the dependent variable to change. Measure the effect of the independent variable on the dependent variable. Solomon four group design is when half the participants receive only a posttest and the other half get both a pretest and posttest. Assigning participants to experimental conditions there are two basic ways of assigning participants to experimental conditions: Independent group design participants are assigned to each of the conditions using random assignment. Order effect is the order of presenting the treatments affects the dependent variable. When severity of crime is the independent variable, after reading about a less severe crime, a more severe crime may seem much worse or vice versa there are two approaches to deal with this problem: Counterbalancing all possible orders of presentation are included in the experiment.
