Investigated the predictive power of two written tests of Piagetian developmental level, The Understanding in Science Test and the Reasoning Test. Also examined the extent to which two variables, level of reading comprehension and level of field dependence-independence, were associated with performance of secondary school Australian students on…

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)