MARKET 1 Lecture Notes - Lecture 3: Percentile Rank, Item Response Theory, Percentile
Document Summary
Binet-simon scale for intelligence: first standardized test, given under standard conditions and norms with which they could compare the results from any new subject. Drawbacks of the woodworth personal data sheet(first structured personality test): it assumed that the content of an item could be accepted at face value, but that has shown to be often false. A person could be dishonest or interpret the meaning of a statement differently. Uses the logical content strategy no empirical evidence. Chapter 2 norms and basic statistics for testing. Norming: calculate total scores -> z-scores -> percentile scores -> stanines. Slide 26!: percentile ranks, pr = (b / n) *100 = percentile rank of xi, pr = percentile rank of score xi, b = the number of scores smaller than xi, n = total number of scores. Item format: dichotomous(probabilities between zero and 1) or polytomous.
