PSY 2301 Lecture Notes - Lecture 4: Falsifiability, Psy, Internal Validity
1 Feb 2018
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Psy:2301 - lecture 3 - research methods in clinical psychology. *note: this lecture is all in context of sexual assault on college campuses. Hypothesis: a proposed explanation for a phenomenon that is testable (falsifiable) Example: expect links between alcohol consumption, misperception of sexual interest (msi) and sexual aggression (sa) Path diagrams: schematic depicting relationships - ways to depict: Double-headed arrow connecting two variables (always correlational) Causal effect of one variable on another. Single-headed arrow connecting first variable to path between two other variables. First variable influences relationship between other two variables. (cid:862)al(cid:272)ohol, m i a(cid:374)d a asso(cid:272)iated (cid:449)ith o(cid:374)e a(cid:374)othe(cid:396)(cid:863) Causal: one variable (or more) causes another variable (or more) Mediational: one variable at least partially accounts for a relationship between two other variables *fundamental goal of clinical psychology is to determine mediational hypotheses* (cid:862)m i (cid:373)ediates li(cid:374)k (cid:271)et(cid:449)ee(cid:374) al(cid:272)ohol a(cid:374)d a(cid:863) Relationship between alcohol and sa gets smaller if msi added to model.
