PSYB01H3 Study Guide - Inter-Rater Reliability, Construct Validity, Fuel Dispenser
Document Summary
The most common measurement strategy is to ask people to tell you about themselves. Psychological and neurological responses can be measured as well. Reliability refers to the consistency or stability of a measure of behaviour. A reliable test would yield the same result each time. The results should not fluctuate from one reading to the next if there is fluctuation there is an error in the measurement device. 1. true score: the real score on the variable. Example: if you administer a highly reliable test multiple times, the scores on them might be 97-103; however if you used an unreliable test the scores might be 85-115. The measurement error in the unreliable test is revealed in the greater variability shown in the scores. Using unreliable measurements is a waste of time because the results will be unstable and are unable to be replicated.
