Cognitive ability tests are widely used in organizations around the world because they have high predictive validity in selection contexts. Although these tests typically measure several subdomains, testing is usually carried out for a single subdomain at a time. This can be ineffective when the subdomains assessed are highly correlated. This…

The special case of the Piagetian model is discussed in relation to test theory. Problems connected with the construction and analysis of a test based on Piaget and Inhelder's The Child's Construction of Quantities are presented, and related to a method of representing the item discrimination which is consonant with Piagetian theory. Loevinger and…

The instructional components of mediation, a teaching technique used in dynamic assessment, were evaluated with 100 four-year-old children attending daycare or preschools in London, Ontario. The effects of familiarization with task materials, task-specific rule teaching, and elaborated feedback were assessed using a pretest-posttest design.…

The conference was planned to appeal to a diverse audience and was not centered on a single unifying theme. It was divided into three sessions. Session I was comprised of two presentations which focused on measurement problems at the preschool, early childhood, and preadolescent levels: Measurement of Cognitive Abilities at the Preschool and Early…