PSYB01H3 Chapter Notes - Chapter 11: Repeated Measures Design, Program Evaluation, Experiment
Document Summary
Chapter 11: single case, quasi-experimental, and developmental research. The manipulation is then introduced during a treatment period, and the subject"s behaviour continues to be observed. Reversal designs: one method to determine that the manipulation of the independent variable had an effect on the dependent variable in single case experiments is to demonstrate that the manipulation can be undone, or reversed. Threats to internal validity: internal validity is threatened any time there is a reasonable alternative explanation for changes to the dependent variable, quasi-experimental designs are particularly susceptible to the following particularly common threats to internal validity. If this happens, you might mistakenly attribute the change to the treatment rather than to maturation. Testing: testing effects become a problem is simply taking the pretest changes the participant"s behaviour, for example, simply recording how many cigarettes a participant smokes might be suf cient to cause a reduction in the number of cigarettes smoked.
