Atkinson and Geiser (2009) make a strong argument for moving to a new form of college admissions testing using curriculum-based achievement tests. In making their case, however, they exaggerate the weaknesses of current tests such as the ACT and SAT by minimizing these tests' predictive utility and claiming a stronger relationship to socioeconomic…

Using predictive validity studies of the Law School Admissions Test (LSAT) and the undergraduate grade-point average (UGPA), this study examined the large variation in the magnitude of the validity coefficients across schools. LSAT standard deviation and correlation between LSAT and UGPA accounted for 58.5 percent of the variability. (Author/EGS)

When the precise basis of selection effect on correlation and regression equations is unknown but can be modeled by selection on a variable that is highly but not perfectly related to observed scores, the selection effects can lead to the commonly observed "overprediction" results in studies of predictive bias. (Author/PN)

The common approach to studies of predictive bias is analyzed within the context of a conceptual model in which predictors and criterion measures are viewed as fallible indicators of idealized qualifications. (Author/PN)

There is more than one reasonable definition of test fairness and these definitions are in conflict; alternate formulations are discussed here. (JB)

Presents the drastic effects that selection on several variables can sometimes have on the validity of predictor variables. Discusses practical implications of correcting correlations for selection effects and reporting results of validity studies. (Author)

Use of the Law School Admission Test (LSAT) and undergraduate grade point average for members of minority groups are examined in relationship to recent LSAT studies and related research on admissions tests and test bias. Traditional predictors of law school grades were found to be as accurate for minority as for majority persons. (JT)