The ability of the NORMIX algorithm to recover overlapping population structures was compared to the OVERCLUS procedure and another clustering procedure in a Monte Carlo study. NORMIX is found to be more accurate than other procedures in recovering overlapping population structure when appropriate implementation options are specified. (SLD)

Describes the classification, number, and origin of wildflowers in North America. Discusses the use of a poster attached to the journal that includes activities to help students develop an awareness and appreciation of the native flora of North America. Additional activities are referred to in a list of 20 additional resources. (MDH)

Investigates a taxonomy of seven proposed responses to anomalous data. Concludes that one additional type of data is needed in the taxonomy. Suggests that the taxonomy can be used as a framework to guide classroom discussion. Contains 57 references. (DDR)

Two experiments used object-manipulation tasks to examine whether one- to two-year-olds form superordinate-like categories by attending to object parts. Findings indicated that 14- and 18-month-olds behaved systematically toward categories with different, but not matching, parts. Without part differences, none formed superordinate categories.…

Elaborates on a theoretical framework for analyzing the operation of the official classification system within the mental health professions. Uses the "Diagnostic and Statistical Manual of Mental Disorders" (DSM) to explicate agency in structuration theory and structuration theory to illuminate the structure/use of the DSM. (Author/AEF)

Reviews psycholinguistic research on second-language (L2) self-repair to date with particular attention to the relevance of this field for L2 production and acquisition. (Author/VWL)

Focuses on levels of anxiety and imagery among female and male students in varying proximity to an examination to explain gendered differences in degree classification at Oxford and Cambridge universities. Finds significant, gendered differences in the impact of proximity on anxiety and imagery. Links these findings to differences in degree…

Analyzes the application of levels of deficits or supports in the classification of mental retardation in published research. Analysis of data from three professional journals indicated that the supports model of classification has had no significant impact in subject descriptions reported in mental-retardation research. Implications for teacher…

This study evaluated the accuracy of automated methods of grammatical categorization ("tagging") of transcribed conversational language samples from 30 normally developing children. On a word-by-word basis, automated accuracy levels averaged 95.1%; accuracy of tagging whole utterances averaged 77.7%. Results suggest that further improvement of…

Symbols for bibliometric concepts like "half life,""impact factor,""normalized impact factor," and "immediacy index" are proposed and formulas for the determination of their values are provided. The features of the bibliometric concepts are also highlighted. (Author/AEF)

Describes the VISION (video indexing for searching over networks) digital video library system which was developed at the University of Kansas as a testbed for evaluating automatic and comprehensive mechanisms for library creation and content-based search and retrieval of video over local and wide area networks. Discusses experimental results.…

Explores students' abilities in mental computation, finds out the strategies they use most naturally, and develops a theoretical framework by giving 60 children a questionnaire and interviewing them on a series of arithmetic operations to be solved by mental computation. Generates a classification of children's strategies. Contains 31 references.…

Responds to Mandler's critique of authors' view of infant categorization. Maintains that their view of infant categorization is not characterized by a shift from one type of category to another but by gradual changes in the kinds of information infants can use in forming categories. Clarifies position regarding a single categorical process using…

Discusses the changes in how labor markets are conceptualized and changes in them monitored in Australia. Describes the Australian Bureau of Statistics revised occupational classification system. (JOW)

Three experiments used a familiarization/novelty or a habituation/dishabituation procedure to examine developmental change in infants' tendency to parse exemplars into separate categories. Results indicated that 10-month olds appeared to form differentiated categories, whereas 4- and 7-month olds formed a single category to include the range of…