Changepoints are abrupt variations in a sequence of data in statistical inference. In educational and psychological assessments, it is pivotal to properly differentiate examinees' aberrant behaviors from solution behavior to ensure test reliability and validity. In this paper, we propose a sequential Bayesian changepoint detection algorithm to…

The development of some psychometric indices of performance rating quality based in judgement is traced. The conceptual and analytical confusion that characterizes contemporary research in this area is described. The operational definitions of several criteria of rating quality, including leniency and severity of the rating effect, halo effect,…

A comparative method for analyzing efforts of induced change in cross-cultural situations is described. Case histories of efforts to introduce innovations to local communities of the developing nations were separated into 'success' and 'failure' groups. The behavioral components that influenced such outcomes were categorized according to whether…