Biomedical subjects

A T Kubiak

Publications and source records attributed to A T Kubiak.

4 recordsLinked to original sources

PubMed1990

Incidence of measurement disturbances in the Dental Admission Quantitative Reasoning Test.

This paper describes the incidence of inconsistent person-response patterns in the Quantitative Reasoning Test (QRT), which is part of the Dental Admission Test (DAT) battery. using the Rasch person analysis approach to estimate the likelihood of a response pattern resulting from only two factors (the difficulty of the items and the ability of the person), a statistical profile of inconsistent response patterns was developed for a sample of students taking the DAT. The results of two test dates, April 1987 and October 1988, were included in this study. A random sample of 1,000 persons was drawn from each of these two test administrations. For the Fall 1988 sample, the person analysis was supplemented by a questionnaire designed to check the correspondence between a student's self-reported response behavior and the statistical profile provided by the person analysis. The analysis of the two samples of response patterns indicates a high incidence (50 percent+) of atypical response patterns on the test. This has serious implications for the admissions procedure since many of the atypical response patterns invalidate the standard scores reported for those students.

Education, Dental↗

PubMed1989

Gender differences in item performance and predictive validity on the DAT Quantitative Reasoning Test.

This article reports on examination of the performance of males and females on individual items of a graduate admission mathematics test--i.e., the Quantitative Reasoning Test administered as part of the Dental Admission Test--and relates the results to success in dental school. Items that are differentially familiar to males and females were identified and used as independent predictors of success in the first year of dental school. There was no significant difference between male and female performance in dental schools and no significant difference in the predictive validity of items that "favor males" and those that "favor females." Furthermore, the items that "favor females" produce approximately equal raw score distributions for males and females without significant adjustments in the content specifications of the test and thus would not underpredict female performance in dental schools.

College Admission Test↗

PubMed1989

Construct and predictive validities of the Perceptual Ability Test.

The construct and predictive validities of the Perceptual Ability Test (PAT) were examined. The results indicate that the PAT is a multidimensional test of spatial abilities, with each of the PAT subtests exhibiting different predictive validity. Furthermore, a linear combination of the PAT subtest scores was found to be more predictive of first-year dental school technique performance than the total PAT score.

College Admission Test↗

PubMed1988

Revision of Dental Admission Test standard score scale.

In October 1988 the Dental Admission Testing Program will begin reporting DAT scores on a new standard score scale. This scale will be based on the underlying ability metric rather than on the normal distribution that is the basis of the current-1 to 9 scale. A comparison of the two standard score scales is included, as well as a discussion of the advantages offered by the ability based metric.

American Dental Association↗