PSYC 2300 Lecture Notes - Lecture 3: Convergent Validity, Face Validity, Operational Definition
Document Summary
Hypothetical definition: attributes/mechanisms that help explain/predict behavior, may not be directly observed. Associated with something that can be measured. External stimulus - reaction/state of being - behavior. Operational definitions: how would you measure the variable you are interested in, should be: Multiple outcomes: converging evidence is more convincing, more outcomes increase chances to have relevant content. Operationalizing hypotheses: pick a hypothesis, generate an operational definition of your hypothesis. Does the measure appear to measure what it is intended. Does the test represent all possible items that can be. Are scores from new measure consistent to scores from. Degree to which the test measures the psychological. Construct validity o characteristic of interest (hypothetical construct) Looking for evidence that the measure is distinct from. Using 2 methods for measuring 1 variable o. Observed score = true score + measurement error. Types of error: observer error, participant changes. Trasnient states: environmental changes, test characteristics.
