This article is a commentary for the special issue on the Early Development Instrument (EDI), a community tool to assess children's school readiness and developmental outcomes at a group level. The EDI is administered by kindergarten teachers, who assess their kindergarten students on 5 developmental domains: physical health and well-being, social…

A paper-and-pencil test of seven of Inhelder and Piaget's formal operational schemes was developed. Multitrait-multimethod cross-validation procedures indicated that the objective test is a valid and reliable measure. It has the advantage of use in a large group setting without the need for trained clinical interviewers. (Author/PN)

Describes a set of Science Reasoning Tasks which are valid and reliable for assessing the ability of children to use concrete and formal reasoning strategies and can be used by science teachers without professional training in Piagetian studies. Thirty pupils can be tested on each task in about 50 minutes. (Author/DS)