Date of Award:

5-1990

Document Type:

Thesis

Degree Name:

Master of Science (MS)

Department:

Psychology

Committee Chair(s)

Damian McShane

Committee

Damian McShane

Committee

Carolyn Barcus

Committee

Marvin Fifield

Abstract

A study was conducted to examine one aspect of construct validity for the Kaufman Assessment Battery for Children (K-ABC). Forty-eight Sioux children at five age levels (8 to 12.5) were used in this study. Relying on theories of child development, most tests of mental abilities have been constructed so that raw scores will increase with age. Pearson r correlation coefficients between age and raw scores were calculated across five age levels for this sample of Sioux children. The Simultaneous-, Sequential-, and Achievement-scale raw scores significantly correlate with age at the .05 level for a one-tailed test of significance. Number Recall and Word Order did not significantly correlate with age. Z-score comparisons between the standardization sample (n = 900) and the Sioux sample were calculated. Statistically significant Z-score discrepancies were obtained on a two-tailed test of significance (.05) for the total Simultaneous scale, for Spatial Memory, and for Hand Movements. Gender differences were found between the Sioux males and standardization males.

This study also examined the possible effects of school attendance and gender on three K-ABC global scales. An ANOVA (method of unweighted means) test of statistical significance was computed to determine main and interaction effects on the Simultaneous, Sequential, and Achievement scales. There was no significant main effect between the two classification variables and the three global scale scores. Results did indicate Sioux males tended to obtain lower Sequential scores in the low attendance condition and low attending females obtained lower scores on the Simultaneous scale.

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