PSY 290A Study Guide - Midterm Guide: Observer-Expectancy Effect, Type I And Type Ii Errors, Internal Validity

• School: University of Arizona
• Department: Psychology Main
• Course: PSY 290A
• Professor: Dana Narter

Document Summary

Experiment - a study in which one variable is measured and one manipulated. Manipulated variable - a variable in an experiment that a researcher controls, such as by assigning participants to its different levels (values). Measured variable - a variable in an experiment whose levels (values) are observed and recorded. Independent variable - a variable that is manipulated in an experiment. In a multiple-regression analysis, a predictor variable used to explain variance in the criterion variable. Conditions - one of the levels of the independent variable in an experiment. Dependent variable - in an experiment, the variable that is measured. In a multiple-regression analysis, the single outcome, or criterion variable, the researchers are most interested in understanding or predicting. Control variable - a potential variable that an experimenter holds constant on purpose. Comparison group - a group in an experiment whose level on the independent variable differs from those of the treatment group in some intended and meaningful way.