PSYC2014 Lecture Notes - Lecture 1: Causal Model, Measure (Mathematics), Differential Psychology
Document Summary
The defining characteristics of psychological tests: a psychological test is a sample of behaviours, attitudes, thoughts and feelings, participants respond to assessment; psychological value of these responses is determined by the qualities of the sample. Individual differences possess and relative temporal and/or spatial stability and predictive variability. Psyc 2014 - lecture series 1: balanced = neutral scale point in the middle, unbalanced = no neutral point or not in the middle, common types: social distance scales, rating scales, likert scales. Validity: validity = the degree to which a claim is true, three parallel definitions, 1. The appropriateness or meaningfulness of test scores and their interpretations: 2. The degree to which a measurement scores or observations are a true representation of psychological reality: 3. The levels of logical or statistical errors and biases in the test construction and conclusion. Issues: sampling and cluster bias, systematic error, ceiling/floor effect, expert judges.
