PSY 2401 Lecture Notes - Lecture 5: Blind Experiment, Dependent And Independent Variables, Psych

• School: Temple University
• Department: Psychology
• Course: PSY 2401
• Professor: Melinda Mattingly

Document Summary

Variable(s) are manipulated (changed) to observe the effect on other variables. Variable(s) is/are kept constant (do not change) Independent variables: variable that is manipulated (changed, subject variables, quasi-experimentation. Dependent variables: variable that is measured. Control variables: participants who are not exposed to the independent variable. Random assignments make them as equivalent as possible. Confound: variable that influences both the dependent variable and independent variable causing a spurious association, cannot be described in terms of correlations or associations. Internal validity: the degree to which differences in the dv are due to differences in the iv. Single blind study: experimenter expectancy efforts, experimenters are aware of which subjects are receiving the treatment or independent variable. Double blind study: third person there since both are unaware. External validity: the degree to which findings can be applied/generalized to other settings and or samples, mundane realism, materials involved in experiment are similar to real world events.