PSY324H5 Lecture Notes - Lecture 2: Affect Measures, Concurrent Validity, Observational Error
Document Summary
Science of wellbeing| winter 2017: what are we going to talk about today, measurement criteria. Other measures of well-being: criteria for measurement, reliability consistently measures some construct, validity. Your score is made of true score and measurement score. Related to construct of interest: criteria for measurement: reliability. Reliability reflects how much random measurement error there is in an individual"s score. Randomly create 2 subsets from a single measure and correlate average score of subset 1 with average score of subset 2. No random error = correlation, r = +1. 00: criteria for measurement: reliability. Administer measure at different time points and find correlations between time points (ex. average at time 1 and average at time 2) No random error = correlation, r =+1. 00. Short-term vs. long-term stability: criteria for measurement: reliability. Different ways of assessing reliability: internal consistency. Using multiple items in the measure, look at how items correlate with each other.
