This paper discusses the basic theory underlying confidence limits and presents reasons why psychologists should incorporate confidence ranges in their psychodiagnostic reports. Four methods for establishing confidence limits are compared. Three of the methods involve estimated true scores, and the fourth is the standard error of measurement…

Test Pac, a test scoring and analysis computer program for moderate-sized sample designs using dichotomous response items, performs comprehensive item analyses and multiple reliability estimates. It also performs single-facet generalizability analysis of variance, single-parameter item response theory analyses, test score reporting, and computer…

Subroutines to calculate exact chi square and Fisher's exact probability tests are presented for 3 by 2 cross-classification tables. A nondirectional probability value for each test is computed recursively. (Author/GDC)

Lord's method for detecting subgroup bias at the item level uses a three-parameter item characteristic curve model. A chi square statistic is computed on the multivariate differences between the parameter estimates of item discrimination and difficulty. The LOGIST program and additional programs written in BASIC are used. (Author/GDC)

The viability of the FORTRAN computer language and its relationship to other languages (such as PASCAL) were discussed. A library of C language and assembly language FORTRAN-callable subroutines, developed for the use of behavioral science researchers, was introduced. (Author/GDC)

A FORTRAN 77 program is described that computes both the different response success-error patterns and their summary statistics for learning and forgetting in fixed trial experiments using a two-stage Markov model. (Author/GDC)

A complete package for Markov model-based fixed trial learning experiments contains four FORTRAN 77 programs. Two of the programs deliver likelihood and parameter estimates of one- and two-stage learning models, and two may be used for hypothesis testing of parameter differences between and within experimental conditions. (Author/GDC)

Fifteen FORTRAN 77 programs are contained in the described package. Three programs are available for each of five forgetting models involving 5, 7, 8, 9, and 10-parameter models. The programs compute parameter estimates and test parameter estimates both between and within experimental conditions. (Author/GDC)

Spearman's general intelligence, or "g" factor, was investigated in a sample of 189 Black, 184 Hispanic, and 187 White children aged 6-11. The magnitude and loadings of factors on the Wechsler Intelligence Scale for Children (Revised) were similar for all three groups. (Author/GDC)

The Kaufman Assessment Battery for Children and Wechsler Preschool and Primary Scale of Intelligence (WPPSI) were administered to Anglo- and Mexican-American children aged four to six. Both scales measured similar, but not identical, intellectual and achievement factors, indicating concurrent validity. Anglo children scored higher on WPPSI verbal…

Bilingual Navajo adolescents aged 14-16 were administered the Raven Standard Progressive Matrices (RSPM) and Comprehensive Tests of Basic Skills (CTBS). Correlations were moderate and were higher for females than for males. Norms were established for adolescent Navajos on the RSPM, a nonverbal test of intelligence and visual reasoning. (Author/GDC)

Thirty elementary students referred for possible learning disability were administered the achievement sections of the Woodcock-Johnson Psycho-Educational Battery and several traditionally used school district tests. Identical student placement decisions were reached on 23 out of 30 students. (Author/GDC)

Criterion-related validity of the 126-item cognitive test used in the High School and Beyond study was examined. Sophomore and senior year cognitive test results correlated highly with senior year college entrance examinations for all subtests except civics, and moderately well with senior year grades and class rank. (Author/GDC)

Canadian undergraduate students were administered the British general ability test, AH2, along with a multiple-choice vocabulary test and the Standard Progressive Matrices, a nonverbal ability test. Scores were compared with British norms and intercorrelated with those of the other two tests. Correlations with the other ability tests were low.…

The internal consistency of the Goodenough-Harris Draw-A-Person Test was examined using 150 children, aged 5-8. The 72-item full scales showed good internal consistency at all ages, with no sex differences. Administration of a 42-item short form resulted in sex effects and differential internal consistency. (Author/GDC)