PSY 3171 Lecture Notes - Lecture 3: Endophenotype, Twin Study, Twin

• School: University of Ottawa
• Department: Psychology
• Course: PSY 3171
• Professor: Allison Ouimet

Document Summary

Prototypical: the placebo effect occurs when people get better because they expect treatment to work. Any educated guess or statement to be tested by data. The outcome variable you plan to measure; thing you think is (cid:498)affected(cid:499) Test group of women, then group of men and test severity of depression: culture, socioeconomic status, age, level of education, family history, previous medical history, comorbidity, medication use. Internal validity testing what it is supposed to be testing. Very tough to generalize findings to groups outside specific finding. External validity how much we can generalize our findings to the general population. Freud was the first to study individual cases case study method. Not scientific enough: freud"s psychoanalytic theory, based on clinician"s observations, internal validity, confounds, control. Internal validity will be pretty high but external validity will be low. Relationship between 2 variables (smoking and risk of death: positive, negative, no correlation. Able to determine cause and effect relationship through manipulation.