PSYB01H3 Chapter 8: Chapter 8 - Quasiexperimental and Nonexperimental Designs
Document Summary
We can t directly manipulate independent variables (i. e. gender, age, ethnicity, socio-economic status (ses), locale, diagnosis, personality traits and person history) Subject variables are selecting participants and the studying those affects on them dependent variables. Natural treatments are exposures to events, situation, or settings that emanate from the real world independent variables. Quasiexperiment/quasi-independent quasi as if / to a degree , resembling a true experiment except for the degree to which an experimenter can directly control and manipulate >1 ind. variables, (randomly assign participant to experimental and control conditions) Non-equivalent-control-group designs: have experimental and comparison groups that are designated before treatment occurs and not be random assignment. Before-and-after designs: have pretest and posttest but not comparison group, the participants exposed to treatment serve as their own controls. Quasi-independent variable 9. 11 cannot directly control or manipulate via random assignment exposure to 9/11. Considered natural treatment created by events in real world (i. e. war, presidential assassination, natural disasters.
