Ogbu and Simons' thesis, based on the Cultural-Ecological Theory of School Performance that Black immigrant students academically outperform their non-immigrant counterparts and that achievement differences are attributed to stronger educational commitment in Black immigrant families, was examined. Two hypotheses, based on data from the Progress…

Using a stratified random sample, this paper examines the training practices of setting objectives, transfer, validation and evaluation in Sri Lanka. The paper further sets out to compare those practices across local, foreign and joint-venture companies based on the assumption that there may be significant differences across companies of different…

ifferent evaluation models were applied to data from a high school career education program to investigate problems in statistical conclusion validity and program effectiveness judgments. If potential threats to internal validity are analyzed and protection strategies are developed, more confidence in unplanned ex post facto design using a…