Reviews the history of the terms "impairment,""disability," and "handicap" in the stuttering literature and proposes alternate definitions that are more consistent with the use of the International Classification of Impairments, Disabilities, and Handicaps. A model is proposed for discussing the outcomes of various…

Previous research suggests that model competence does not emerge until relatively late in infancy (20-26 months). Development was systematically analyzed within 3 key areas--count noun learning, dual representation, and categorization--hypothesized to support the emergence of model competence in the second year. In an object-handling preferential…

The typology studies reviewed in the Holtzworth-Munroe and Meehan article make considerable methodological and substantive contributions to the field. There are several definitional, conceptual, and methodological advances that can be explored in this work. Macroframeworks such as the nested ecological model and the theory of triadic influence…

A well-known asymmetry exists in the bilingual masked priming literature in which lexical decision is used: namely, masked primes in the dominant language (L1) facilitate decision times on targets in the less dominant language (L2), but not vice versa. In semantic categorization, on the other hand, priming is symmetrical. In Experiments 1-3 we…

This paper reviews a body of work conducted in our laboratory that applies functional magnetic resonance imaging (fMRI) to better understand the biological response and change that occurs during prototype-distortion learning. We review results from two experiments (Little, Klein, Shobat, McClure, & Thulborn, 2004; Little & Thulborn, 2005) that…

This article provides an overview of the 2002 American Association on Mental Retardation's (AAMR's) "Definition, Classification, and Systems of Supports" (the 2002 System) and discusses its relationship to salient international trends and several scientific and judgmental issues currently impacting the field of intellectual disabilities (ID). Five…

The authors conducted 4 experiments to test the decision-bound, prototype, and distribution theories for the categorization of sounds. They used as stimuli sounds varying in either resonance frequency or duration. They created different experimental conditions by varying the variance and overlap of 2 stimulus distributions used in a training phase…

Cross-classified random effects modeling (CCREM) is used to model multilevel data from nonhierarchical contexts. These models are widely discussed but infrequently used in social science research. Because little research exists assessing when it is necessary to use CCREM, 2 studies were conducted. A real data set with a cross-classified structure…

This research effort compared and contrasted two conceptually different methods for the exploration of human anatomy in the first-year dissection laboratory by accomplished students: "physical" dissection using an embalmed cadaver and "digital" dissection using three-dimensional volume modeling of whole-body CT and MRI image sets acquired using…

This study evaluates a large urban district's standards-based promotion policy decisions against a model-driven classification. Hierarchical logistic regression was used to explore factors related to grade retention at both the student and school level. Statistical results indicate that using students' next year achievement test scores as…

A new approach to the study of text building behavior is possible through the application of Scanator. This paper consists of a demonstration of some of its fundamental functions. These are suitable in a study of text building. The basic concepts, expressed through an analysis of a small part of an interview text, derive from a thermodynamic…

The implications of the 1994 Seels and Richey domain structure for instructional technology (IT) conceptual theory and classification systems, in general, for theory construction are explored. The historical evolution of domains in definitions of the field, the formulation of theory, the nature of taxonomies, the role of conceptual frameworks and…

An investigation was conducted of the eligibility and classification decisions of 223 educational professionals who participated in a special education simulation exercise. Data from their decisions were characterized by much variability and inaccuracy. Fifty-one percent of the Ss declared a student with assessment data in the normal range to be…

This paper presents a summary of the first part of the Pittsburgh Project. It deals with white racialism. "Racialism" is a term that is used differently, explained differently, and deployed differently to account for a heterogeneous range of social phenomena. Not uncommonly, assumptions are made that racialism is a unitary rather than a…