Biomedical subjects

W O Stefanyk

Publications and source records attributed to W O Stefanyk.

4 recordsLinked to original sources

PubMed1989

Speech Sounds Perception Test: nonrandom response locations form a logical fallacy in structure.

The response format of the Speech Sounds Perception Test confounds speech perception with irrelevant method variance. To rectify this problem the response format was revised by randomizing the response locations. An empirical comparison of the revised and original forms was undertaken with forensic (n=59) and psychiatric (n=67) samples. The empirical results coupled with the logical problem in the original form indicates that a revision is necessary.

Adult↗

PubMed1987

Normative data for the Halstead-Reitan neuropsychological tests stratified by age and sex.

Normative data, stratified by age and sex, are presented for the Halstead-Reitan neuropsychological tests: Name Writing, Speech-Sounds Perception, Trail Making, Halstead Category, Finger Tapping, Dynamometer, Tactual Performance, Seashore Rhythm, Tactile Form Recognition, Finger-Tip Number Writing Perception, Face-Hand, and Finger Localization. Correlations of the test variables with age, education, and WAIS-R Verbal and Performance IQ are reported. The normative sample consisted of 225 adults (127 males, 98 females) 15 to 40 years of age. The subjects who were included did not report any history of forensic involvement, head injury, neurological insult, prenatal or birth complication, psychiatric problems, or substance abuse.

Adolescent↗

PubMed1986

Finger tapping: effects of trials and sessions.

18 normal, self-reported dextral subjects (9 men, 9 women) were assessed with a Halstead Manual Finger Tapping device, with 10 trials per hand for 10 consecutive wk. The test-retest reliability of the 10-trial average between the 10 sessions averaged .94 for men and .86 for women, for both preferred and nonpreferred hands. There were no statistically significant effects of increases in performance over sessions or effects of fatigue over trials for either sex or hand. There were, however, significant increases over trials for men for both preferred and nonpreferred hands.

Adult↗

PubMed1985

Hand dynamometer: effects of trials and sessions.

12 normal, self-reported dextral subjects (6 men, 6 women) were assessed with a hand dynamometer with 10 trials per hand for 10 consecutive wk. The test-retest reliability of the 10-trial average across the 10 sessions averaged .91 for men and .94 for women for both preferred and nonpreferred hands. Fatigue effects over trials were statistically significant for both sexes and hands except for women's preferred hand. Skill acquisition effects over sessions were only statistically significant for men's nonpreferred and women's preferred hands.

Adult↗