The detection of differential item functioning (DIF) is important in psychological and behavioral sciences. Standard DIF detection methods perform an item-by-item test iteratively, often assuming that all items except the one under investigation are DIF-free. This article proposes a Bayesian adaptive Lasso method to detect DIF in graded response…

The technique of behavioral contracting is recommended as a highly effective, readily applied technique for use in efforts to strengthen the control of family and school over the behavior of delinquents. A behavioral contract is a means of scheduling the exchange of positive reinforcements among two or more persons. The use of behavioral contracts…