PSYCH 303 Lecture Notes - Lecture 4: Nail Biting, Content Validity, Face Validity

• School: U of M
• Department: Psychology
• Course: PSYCH 303
• Professor: Colleen Seifert

Document Summary

Types of measurement: measurement of variables, measurement of reliability (consistency, measurement of validity (meaning) Who do we observe: people, subjects, participants. What is an independent variable: circumstances measured or manipulated by the experimenter. Independent of what the subject does treatment: a variable expected to cause some effect on behavior, high motivation causes people to learn better, females will be politer than males, more violent films cause more aggressive behavior. Independent variables can be either manipulated (applied) or measured (selected: manipulate: experimenter creates these circumstances for the subject, measu(cid:396)ed: e(cid:454)pe(cid:396)i(cid:373)e(cid:374)te(cid:396) sele(cid:272)ts/(cid:373)easu(cid:396)ed (cid:862)su(cid:271)je(cid:272)t (cid:448)a(cid:396)ia(cid:271)les(cid:863) Control variables: factors that are expressly held constant in the experiment so that they do not have an effect on the dependent variable. Extraneous variables: those factors which cannot be controlled. Construct: well-being; operationalization: 5-item scale, number of smiles, brain wave (self- report, observational, and physiological operationalization) Self-report: sources of error with self-report, wording of the question. Include questions designed to flag respondents high in socially desirable responding.