A growth curve approach to the measurement of change.

The measurement of individual change is approached from the standpoint of individual time paths and statistical models for individual change. The authors consider both statistical and psychometric properties of measures of individual change and examine measures of change for data with more than 2 observations on each individual. It is noted that many conclusions conflict with previous behavioral science literature. (63 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)