I am currently conducting research for a PhD Public Health. As a result of my previous experience researching my Master's degree thesis, and what I have learned so far about designing and validating a risk-perception instrument, I have gained some insight related to know-how and possible pitfalls that can occur when undertaking research. These…

The S.I.T. is an age scale of intelligence with demonstrated reliability and high validity coefficients correlated to the Stanford-Binet. The items of the SIT were classified according to a scheme resembling Valett's classification of Stanford-Binet test items. A comparison of the classifications is made. (Author)

Written by an ex-Latin teacher, short-cuts to analyzing test results for the non-mathematical teacher are provided. Discussions are given of item analysis (item analysis by a show of hands, standards for test items: success, standards for test items: discrimination, and the second stage of item analysis. The standard error is then presented (the…

The Wechsler Intelligence Scale for Children, and the revised form of that measure, were administered to a sample of sixth grade pupils. Although the correlation between measures was high, scores on the revised form were significantly lower. (JKS)

Intraclass correlation and Cronbach's alpha are widely used to describe reliability of tests and measurements. Even with Gaussian data, exact distributions are known only for compound symmetric covariance (equal variances and equal correlations). Recently, large sample Gaussian approximations were derived for the distribution functions. New exact…

Scores on standardized tests may be expressed in a variety of different modes. Raw scores, grade equivalents, percentile ranks, stanines, and standard scores are the major types in use today. The study investigated whether the mode or scale used to express scores affected the magnitude of group statistics, specifically, t and r (the t-test of the…

This report shows how Beta weights for the J-Coefficient may be easily developed without a formal validity study, and indicates how indications of ability other than tests can be used to measure the same abilities that are measured by tests. See also TM 001 163-64,166 for further information on job elements (J-Scale) procedures. (Author/DLG)

An investigation was conducted to determine the effects of response-category weighting and item weighting on reliability and predictive validity. Response-category weighting refers to scoring in which, for each category (including omit and "not read"), a weight is assigned that is proportional to the mean criterion score of examinees selecting…

The Word Intelligibility by Picture Identification Test (WIPI) was developed to measure speech discrimination ability in hearing impaired children. In the first phase of development, the word stimuli were evaluated to determine whether they were within the recognition vocabulary of 15 hearing impaired children (aged 6 to 12) and whether the…

Project TALENT is a national longitudinal study which tests secondary school students with a two-day test battery. This paper reports on a follow-up study made five years after the tests were given to a sample of 440,000 high school students to determine the degree of correspondence between test results and later realization of career plans.…

As part of the development of a test battery to determine proficiency in black standard and nonstandard speech, a test was devised consisting of a repetition task. Fifteen sentences in black standard and 15 in black nonstandard English were to be repeated. A black experimenter administered the test individually to 35 black kindergartners. The…

This study investigated correlations between the Qualitative score of the Porteus Maze Test and age and rates of recidivism of correctional institution inmates. In addition, the study was structured to provide answers to the following questions: (1) Is there a relationship between age and rates of recidivism and the Conformity-Variability score of…

The Threshold by Identification of Pictures (TIP) Test and the Discrimination by Identification of Pictures (DIP) Test were evaluated. Test cards used pictures of items from the first 500 words of Basic Vocabulary for Elementary Children, and the children pointed to the article named. After each item, the tester's voice was reduced 5 decibels. In…