In confirmatory factor analysis quite similar models of measurement serve the detection of the difficulty factor and the factor due to the item-position effect. The item-position effect refers to the increasing dependency among the responses to successively presented items of a test whereas the difficulty factor is ascribed to the wide range of…

Researchers and data analysts are sometimes faced with the problem of very small samples, where the number of variables approaches or exceeds the overall sample size; i.e. high dimensional data. In such cases, standard statistical models such as regression or analysis of variance cannot be used, either because the resulting parameter estimates…

This research note contributes to the discussion of methods that can be used to identify useful auxiliary variables for analyses of incomplete data sets. A latent variable approach is discussed, which is helpful in finding auxiliary variables with the property that if included in subsequent maximum likelihood analyses they may enhance considerably…

This study addresses the current debate about the beneficial effects of text processing software on students with different working memory (WM) during the process of academic writing, especially with regard to the ability to display higher-level conceptual thinking. A total of 54 graduate students (15 male, 39 female) wrote one essay by hand and…

We explored longitudinal effects of a two-generation preschool programme on receptive language scores in children (n = 78) at age 10 years, living with low income. Scores at four time-points, programme intake, exit, age 7, and age 10 years were measured using the "Peabody picture vocabulary test" (3rd ed.). Effects of culture…

Background: Research on gender differences in intelligence has focused mostly on samples from Western countries and empirical evidence on gender differences from Southeast Asia is relatively sparse. Aims: This article presents results on gender differences in variance and means on a non-verbal intelligence test using a national sample of public…

Computed confidence intervals for the Wechsler Adult Intelligence Scale-Revised for the Verbal, Performance, and Full Scale IQ scores. Reports IQ intervals for the 85 percent, 90 percent, 95 percent, and 99 percent levels of confidence for each of the nine standardization sample age groups and the entire sample. (Author)

THIS EVALUATION CONTAINS DETAILED INFORMATION ON THE FIRST YEAR OF SAN FRANCISCO'S PREKINDERGARTEN AND COMPREHENSIVE COMPENSATORY EDUCATION PROGRAMS FOR CHILDREN OF ALL AGES FUNDED UNDER THE ELEMENTARY AND SECONDARY EDUCATION ACT (ESEA) OF 1965. SOME OF THE ACTIVITIES IN THE COMPREHENSIVE PROGRAM WERE TO REDUCE PUPIL-TEACHER RATIO AND CLASS SIZE,…

This study was concerned with determining the validity of the Slosson Intelligence Test (SIT) using the Stanford-Binet Intelligence Scale (S-B), Form L-M as the validity criterion. The sample consisted of 724 students enrolled in 10 public school systems in northeastern Massachusetts. Using the Pearson-Product Moment formula a coefficient of…

In September 1969, a random sample of 160 3- and 4-year-olds was selected from a larger group of individuals in 3 Early Childhood Education Program treatment groups (television only; television + home visitor; and television + home visitor + mobile classroom), along with a no-treatment comparison group, for the purpose of analyzing intelligence…

This critique of Jencks' book on inequality suggests that Jencks and other authors, in criticizing the concept of equal educational opportunity, have considered only one or two dimensions of that concept. In Jencks' case, the report notes, equality was measured only in vocational/economic terms, with the political, social, moral, intellectual, or…

Metropolitan Achievement Tests (MAT) and Otis-Lennon Mental Ability Tests were administered to elementary school students of the Oklahoma City Public Schools. Results of the testing are presented in tables and consist of: elementary school test results as compared to the national means in reading, language, and mathematics; a comparison of scores…

This research investigated the use of the Rasch simple logistic model in item and test calibration. Tests employing word, picture, symbol, and number analogies were administered to college students, high school students, civil service clerical employees, and clients of the Minnesota Division of Vocational Rehabilitation. The results suggest that…

A study of employment procedures at an unnamed gas utility company was made, examining selection procedures, white and blue collar employee performance, promotion rates, and turnover. The data is based on application files, interviews with management personnel, and employee records. The company relied primarily on walk-ins and employee referrals…