PSYB30H3 Lecture Notes - Rorschach Test, Pago Pago, Projective Test
Document Summary
Personality assessment : is the measurement of the individual characteristics of a person. There are many uses of personality assessment beyond the laboratory. Legitimate personality tests have reliability, validity, and generalizability, backed by research evidence that is available for public scrutiny. Test reliability: generalizability across time, items, and raters. Reliability is a prerequisite for validity. We cannot know the correct time with an u reliable watch. A measure must first be consistent in order to be a valid representation of an underlying theoretical construct. Reliability describes the extent to which test scores are consistent and reproducible with repeated measurements. These measurements may be repeated at different times, across multiple items, or using multiple judges or observers. One way of checking internal consistency reliability is to see if different items of the test give similar results. Today, most researchers rely on a statistic called cronbach"s alpha . Imagine taking the correlation between the scores of two halves of a test.
