PSYC 201W Lecture Notes - Lecture 4: Intel 8089, Face Validity, Operational Definition
6 Apr 2016
School
Department
Course
Professor
Document Summary
Qualitaive: variable levels are categories, values relect diference in kind (e. g. , hair colour, type of music, psychiatric diagnosis) Quanitaive: variable levels exist on a coninuum from low to high, values relect diference in amount (e. g. , number of siblings, loudness, iq) Discrete: intermediate values are impossible (e. g. , # of children, whether or not the person is schizophrenic _ Coninuous: intermediate values are possible precision limited only by measurement tools (e. g. , height (62. 675 inches), weight, reacion ime, in pracice, ulimately converted into discrete values. Independent variable presumed to be the causal variable in experiments the manipulated variable oten designated x . Dependent variable variable that is assumed to be caused by the manipulaion of the independent variable. Situaional variables task variables instrucional variables subject variables: quasi-experiments . Constructs psychological researchers oten interested in phenomena that are not directly observable constructs must be translated into something measurable this process occurs via operaionalizaion. Underlying construct - measurable variable - mediator variables.
