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Embretson, Susan E.

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Start date: 1990 × End date: 1999 ×

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Cognitive Design Principles and the Successful Performer: A Study on Spatial Ability

1996 , Embretson, Susan E.

An important trend in educational measurement is the use of principles of cognitive psychology to design achievement and ability test items. Many studies show that manipulating the stimulus features of items influences the processes, strategies, and knowledge structures that are involved in solution. However, little is known about how cognitive design influences individual differences. That is, does applying cognitive design principles change the background skills and abilities that are associated with successful performance? This study compared the correlates of two spatial ability tests that used the same item type but different test design principles (cognitive design versus psychometric design). The results indicated differences in factorial complexity in the two tests; specifically, the impact of verbal abilities was substantially reduced by applying the cognitive design principles.

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Measuring and Validating Cognitive Modifiability as an Ability: A Study in the Spatial Domain

1992 , Embretson, Susan E.

Measuring cognitive modifiability from the responsiveness of an individual's performance to intervention has long been viewed (e.g., Dearborne, 1921) as an alternative to traditional (static) ability measurement. Currently, dynamic testing in which cues or instruction are presented with ability test items, is a popular method for assessing cognitive modifiability. Despite the long-standing interest, however, little data exists to support the validity of cognitive modifiability measures in any ability domain. Several special methodological difficulties have limited validity studies, including psychometric problems in measuring modifiability (i.e., as change), lack of appropriate validation criteria, and difficulty in linking modifiability to cognitive theory. In this article, relatively new developments for solving the validation problems are applied to measuring and validating spatial modifiability. Criterion-related validity for predicting learning in an applied knowledge domain, as well as construct validity, is supported.

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