An Empirical Investigation of Impact Moderation in Test Construction

This investigation constructed four different kinds of test sections using three methods of test assembly that incorporate the goals of simultaneous moderation of three kinds of impact-gender impact, African-American impact, and Hispanic- American impact. The test sections were administered undetectably to random samples from the appropriate population. The results were evaluated by comparison of the characteristics of moderated sections with those of parallel operational sections. Almost all methods of test assembly produced either moderation of impact in the appropriate direction or no change in impact. Taking impact into account in test assembly tended to lower reliability slightly, raise concurrent validity slightly, and maintain the construct measured by the parallel operational section. It also reduced the relative efficiency for test takers in the middle score range while increasing efficiency for those with more extreme scores.     

Some Non‐Academic Developmental Correlates of Ability‐Grouping in Secondary Schools

Using data from the National Child Development Study, the relationship between certain non‐academic aspects of children's development and their school's ability‐grouping policy were examined.

The four areas of non‐academic development considered were: the young people's rating of their own ability in English, mathematics, science and practical subjects, their academic motivation, their plans for further education and occupational aspirations and their behaviour at school. However, in general there were no differences in any of these respects between children in streamed, setted and mixed‐ability schools.

The implications of these findings are discussed, in particular the potential differences which could arise between schools with different policies if more appropriate methods of teaching and organisation were adopted.