The development of the Test of Logical Thinking (TOLT), a group test of formal reasoning ability that requires students to solve problems and to justify the solutions obtained, is presented. Procedures are described for investigations of internal consistency, construct validity, and criterion-related validity. Items used in prior research serve as…

Describes the development of a Piagetian demonstration group test utilized to assess 9-12 year-old students' (N=161) understanding of heat and temperature. Findings include a unitary relationship between Piagetian stages of development and levels of understanding of heat concepts. (DS)

In this analysis of intelligence testing of minority group children, the implications of inadequate testing practices are discussed. Several aspects of test design are examined: deficiencies in intelligence testing, cultural bias, construct validity, and diagnostic utility. A sample set of results derived from a Stanford-Binet test administered to…