Solving a constructed-response item usually requires successfully performing a sequence of tasks. Each task could involve different attributes, and those required attributes may be "condensed" in various ways to produce the responses. The sequential generalized deterministic input noisy "and" gate model is a general cognitive…

Analyzing examinees' responses using cognitive diagnostic models (CDMs) has the advantage of providing diagnostic information. To ensure the validity of the results from these models, differential item functioning (DIF) in CDMs needs to be investigated. In this article, the Wald test is proposed to examine DIF in the context of CDMs. This study…

Marked gender differences in three-dimensional mental rotation have been broadly reported in the literature in the last few decades. Various theoretical models and accounts were used to explain the observed differences. Within the framework of linking item design features of mental rotation tasks to cognitive component processes associated with…

Using a sequential mixed-methods design, this study examined the differences between two native language groups--those with an East Asian language background and those with a Romance language background--in regard to reading subskills as represented in the Michigan English Language Assessment Battery (MELAB) reading test, so as to provide…

Reviews Barbara J. King's detailed observations of free-ranging baboons in Amboseli, Kenya; these observations contain a mass of recent research and report studies of divergent theories in primatology and paleontology. King's studies supply direct evidence about primate behavior that conveys information and show how natural information transfer is…

Tests the hypothesis that there is no monotonic relationship between increasing competence in different linguistic domains and growth in second-language proficiency. The article concludes with an introduction to some assessment models that can accommodate discontinuous growth patterns. These models can describe and model a student's qualitative…

The purpose of this study was to empirically test a set of predictions implied by the Model of Conceptual Learning and Development using the concept of cutting tool. Four subtests were developed to assess a subject's ability to perform at each of four successive levels of concept attainment (concrete, identity, classificatory and formal). In…

Theory and research regarding four levels of concept attainment and three uses of concepts as specified by the conceptual learning and development (CLD) model are described. Assessment batteries were developed to assess each child's level of concept attainment and also the related use of the concepts equilateral triangle, cutting tool, and noun.…