Investigated convergent validity of individual Piaget/Inhelder clinical task interviews with Reasoning Test (Ankney and Joyce), Logical Reasoning Test (Burney), and Classroom Test of Formal Operations (Lawson). Indicates that correlations obtained are not sufficiently strong to warrant selection/categorization of individual students based on their…

Reports on the development of a paper-pencil instrument which consists of five concrete experiences related to environmental concepts. Results indicate an acceptable level of validity. Results also show that the reasoning level of adolescents was well below the theoretical levels predicted for them by theory. (Author/JN)

Evaluated is the Longeot test, a paper and pencil test designed to measure various aspects of formal and concrete operational thought. Information from over 500 subjects (ages 17 to 20) indicated the test to be reliable and classifications from it correlated with classifications mode using Piagetian tasks. (DS)

Determined the degree to which classification of students (N=512) as formal or concrete based on three Inhelder tasks administered by clinical interview method was mirrored by Longeot and Karplus-Lawson-Renner (KLR) classifications. Results indicate that Longeot and KLR differentiate between concrete/formal operations and are discussed from…