The purpose of this note is to derive a simple formula which gives the correlation between shortened versions of two tests, based on the correlations between the longer tests. (Author)

The present report analyzed the scoring data from the original New York City Board of Education scoring guide (1941), and, in addition, a partial replication of the 1941 study is reported, as well as an analysis of scoring patterns among experienced and inexperienced examiners. Results indicate that examiners differ in their scoring of…

Describes procedure for a standard statistical analysis of student scores. Presupposes no familiarity of the reader with statistical concepts, and is intended as a functional, rather than theoretical, guide to student score analysis. (PR)

One in a series of nine articles in a section entitled, "Electronic Computer Program and Accounting Machine Procedures. Research supported in part by contract Nonr-2752(00) from the Office of Naval Research.

One in a series of nine articles in a section entitled, "Electronic Computer Program and Accounting Machine Procedures.

The short term memory performance of three groups of nonretarded and one group of 36 mentally retarded persons (mean mental age of 8.95 years) who were tested using the Brown-Peterson paradigm was compared using two scoring methods. (Author/SW)

Evaluated two strategies for scoring context-dependent test items: ignoring the depending and scoring dichotomously or modeling the dependence through polytomous scoring. Results for data from 38,965 examinees taking a professional examination show that dichotomous scoring may overestimate test information, but polytomous scoring may underestimate…

Examined a procedure for identifying and resolving discrepancies in ratings, focusing on the third rater adjudication procedure used in scoring the Test of Spoken English. Results for 1,446 adult examinees demonstrate that implementing a discrepancy resolution procedure is not sufficient in itself for quality control monitoring. (SLD)

Examined the degree of variation in the accuracy of classifying student performance proficiency-level scores with changes in the number of proficiency levels and the measurement accuracy. Simulation results show the limitations of interpretability of single indexes that are intended to represent classification accuracy. Suggests ways to estimate…

Conducted study to examine whether practitioners err in administering and scoring Wechsler Adult Intelligence Scale-Revised (WAIS-R). Obtained WAIS-R protocols from 50 randomly selected psychological folders in records of 1 school district. Found that practitioners committed errors on all 50 protocols. Errors on 27 of 50 protocols were sufficient…

Describes the maximum likelihood (ML) estimation of mean and covariance structure models when data are missing. Describes expectation maximization (EM), generalized expectation maximization, Fletcher-Powell, and Fisher-scoring algorithms for parameter estimation and shows how software can be used to implement each algorithm. (Author/SLD)

Compared student ability estimates with their true abilities under different rater scoring designs and differentially weighted composite scores through simulation. Results indicate that the spiraled rater scoring design without modeling rater effects works as well as the nested design in which rater tendencies are modeled. (SLD)

Purpose: To determine the accuracy of a telephone-screening system to identify persons eligible for home- and community-based long-term care. Design and Methods: Data from Michigan telephone screens were compared to data from in-person assessments using the Minimum Data Set for Home Care (MDS-HC). Weighted kappa statistics measured the level of…