Individuals with better spatial thinking have increased interest and greater achievement in science, technology, engineering, and mathematics (STEM) disciplines (Wai, Lubinski, & Benbow, 2009). This relationship means that STEM education may benefit from leveraging spatial thinking, but measures of spatial thinking as they relate to specific…

Since imagery is a unidimensional variable, all measures of imagery, both questionnaires and behavioral, should be correlated; this, however, has not been supported by earlier research. Therefore, a new questionnaire on mental imagery--the Differential Imagery Questionnaire (DIQ)--was developed which taps four types of imagery: word imagery (WI);…

Thirty-five tests which measure cognitive abilities at the intermediate grade level and the related manual are intended to accompany the authors' 1973 monograph, "A Structure of Concept Attainment Abilities." Additional tests which measure these abilities (verbal, induction, memory, spatial, numerical, perceptual speed, evaluation, word fluency,…