PSY222 Chapter Notes - Chapter four: Categorical Variable, Operationalization, Heart Rate
Document Summary
Construct validity is a crucial piece of any psychological research study for frequency, association, or causal claims. Ways to measure variables each variable in a study nu choosing among three common types of measures: Operationalized a variable by recording people"s answers to questions about themselves. Operationalizes a variable by recording observable behaviors or physical traces of. Operationalizes a variable by recording biological data, such as: Operational variables are classified as either categorical or quantitative. Variable that levels are categorized such as male or female. The variable value can be recorded as meaningful numbers. For certain kinds of statistical purposes, researchers may need to further classify a quantitative variable in terms of ordinal, interval, or ratio scale. The measurement applies when the numeral of the quantitative variable represents a ranked order. Can be defined as a quantitative measurement scale where variables have an order. The difference between the two variables is equal and the presence of zero is none or.
