This article discusses practical and theoretical problems related to the measurement of formal operations. The first section of the article discusses problems in measuring formal operations using the clinical interview method. These problems include the lack of both a standardized interview and a uniform scoring procedure. Section two discusses…

Researchers have attempted to develop paper and pencil Piagetian tests that yield results equivalent to manipulative Piagetian tasks and that can be administered in significantly less time. This study is an attempt to partially replicate and extend the findings of research by Paul Ankeny and Lyle Joyce who found significant positive correlations…