Multiple True-False Items: A Study of Interitem Correlations, Scoring Alternatives, and Reliability Estimation

Intercorrelations among multiple true-false items were examined to determine to what extent each true-false option can be treated as independent. Results from 157 health science students and 170 medical students showed that correlations between true-false options associated with the same stem were from 2.6 to 7.0 times larger than those from different stems. This suggests that results from previous research indicating that each true-false option could be treated as an independent item cannot be generalized to other tests and examinee populations without supporting evidence. Four scoring methods were explored which varied chance success levels and scoring for partial knowledge. The results showed that scoring methods incorporating partial knowledge were more reliable and possessed greater concurrent and predictive validity than those minimizing chance success. Methods for computing reliability estimates were compared and suggestions were offered regarding practical use     

Performance of black and white children on the bracken basic concept scale

One hundred fourteen matched pairs of black and white children were compared in their performance on the Bracken Basic Concept Scale. It was found that the white children attained scores that were nearly identical with the national average, but the black children performed approximately one-half standard deviation below their white counterparts. The black and white children exhibited similar patterns of performance on the BBCS subtests, suggesting a similar cognitive approach to the tasks.     

Two Generalizations of the Item Discrimination Index to Multi-Score Items

Two general item analysis indices which apply to multi-score items are developed as generalizations of a popular index applicable to dichotomous items. The indices of discrimination are of two types: one based on differential difficulty and the other on net number of positive discriminations. The usefulness and limitations of each are discussed.     

Cognitive processes underlying WISC-R performance of gifted and learning disabled navajos

The purpose of this study was to provide an empirical basis for the interpretation of the WISC-R performance of Navajo children according to the Luria-Das Model of Simultaneous and Successive cognitive processes. Two groups of Native American Navajo subjects, 45 learning disabled and 41 gifted, were given the WISC-R. The scores on those subtests expected to involve Successive and Simultaneous processes were factor analyzed for each group and two factors were extracted. The factors, essentially similar for both samples, were interpreted to reflect the Successive and the Simultaneous modes of processing information as suggested by the Luria-Das Model. The gifted and learning disabled children had disparate loadings for some of the subtests, suggesting that the two groups may be using distinct modes of coding information.     

Teaching,Freedom and the Human Individual

The essay represents teaching as the coming to be of the human individual. In order to do so, it reflects on the character of human life by which it is knowledge of itself. Being knowledge of itself, human life is self-determining or free. Therefore generality and particularity come together in the human being in a distinctive way: a human being is not an exemplar, instance or specimen of a species, nature or life-form. Rather, she is her own principle. This is captured in the idea of the human being as an individual. The essay reveals teaching to be the form of coming to be which is proper to what is an individual in this sense. In this way, the essay shows teaching to be internal to human freedom.