PSYB01H3 Chapter Notes - Chapter 10: Statistical Power, Internal Validity, Inflectional Phrase
Document Summary
Behavioral diary: a self-report data collection strategy where indivs record their behaviors and associated feelings as they occur. Pretest-posttest design: w within-subjects design where participants are measured before and after exposure to a treatment/intervention. Unlike the pretest-protest design, there is no baseline measurement. Advantages of using within-subjects designs: can address research q"s involving change or relative comparisons, fewer research participants needed for adequate statistical power, indiv differences are constant across comparison groups. Disadvantages of using within-subject designs: potential external validity concerns, potential logistical challenges, potential threats to internal validity, attrition: the differential dropping out of participants from a study (mortality) Solution make continuation in the study appealing or nonthreatening: testing effect: threat to the internal validity of a study where participants" scores may change on subsequent measurements simple. Solution maintain consistency in the measurement & how its: history: external event potentially infl participants" behavior due to.
