A visual display is introduced that enables one to compare the predictive validities of all possible non-negatively weighted sums of two predictors. This two-predictor validity curve assesses the level of predictability of a criterion from composites of two predictors. Derivations are presented for the general case. For illustrative purposes, the…

The Phi Delta Kappa Study of Students At Risk assessed who is at risk, what puts students at risk, what schools are doing to help those students, and how effective these efforts are. Data were provided on at-risk students in 85 U.S. and Canadian communities by teachers who knew each student best and had access to a student's school records. This…

This document contains 18 papers from the human resource development and manpower training section of an international conference on vocational education and training (VET) for lifelong learning in the information era. The following papers are included: "Use of Social and Economic Modeling to Plan Vocational Education and Training"…