Effects of Gender Diversity on Performance and Interpersonal Behavior in Small Work Groups

We examined the separate and combined impact of gender composition and training method on both the performance and interpersonal behaviors exhibited in small work groups. Participants were scheduled in groups of three for two 1-h sessions that occurred 1 week apart. In Session 1, groups were trained to assemble the AM portion of a radio. In Session 2, groups were tested on their training. Analyses indicated that groups whose members were trained together took longer to assemble their radios and made more errors than groups whose members were trained apart. No performance differences were found between mixed-gender and same-gender groups. However, women were less task-oriented in mixed-gender than in same-gender groups, but men were more task-oriented in mixed-gender than in same-gender groups. Further, solo women were less talkative than women in the majority, whereas men were more talkative when they were solos rather than in the majority. Implications for the nature of training and gender composition in groups in the workplace are discussed.     

Testicular Cancer and Genetics Knowledge Among Familial Testicular Cancer Family Members

Purpose  

It was our aim to determine baseline levels of testicular cancer and genetics knowledge among members of families with Familial Testicular Cancer (FTC).     

The dynamic nature of knowledge: Insights from a dynamic field model of children’s novel noun generalization

This paper examines the tie between knowledge and behavior in a noun generalization context. An experiment directly comparing noun generalizations of children at the same point in development in forced-choice and yes/no tasks reveals task-specific differences in the way children’s knowledge of nominal categories is brought to bear in a moment. To understand the cognitive system that produced these differences, the real-time decision processes in these tasks were instantiated in a dynamic field model. The model captures both qualitative and quantitative differences in performance across tasks and reveals constraints on the nature of children’s accumulated knowledge. Additional simulations of developmental change in the yes/no task between 2 and 4 years of age illustrate how changes in children’s representations translate into developmental changes in behavior. Together, the empirical data and model demonstrate the dynamic nature of knowledge and are consistent with the perspective that knowledge cannot be separated from the task-specific processes that create behavior in the moment.     

Processing pronunciation variants: the role of probabilistic knowledge about lexical form and segmental co-occurrence

Two experiments investigated the contribution of lexical knowledge to processing nasal flap variants (e.g. “mental” produced as “mennle”). High and low variant production frequency nasal flap words and nonword counterparts were presented in a “t” detection task. More “t” detections were found in high than low variant frequency nasal flap words; no difference was found in control nasal flap nonwords but control nonwords with a nasal had more “t” detections than nonwords without a nasal. The findings suggest that access to lexical knowledge of an alternative NT pronunciation is modulated by variant frequency of the reduced form and pre-lexical phonotactic knowledge.     

Statistical regularities in vocabulary guide language acquisition in connectionist models and 15-20-month-olds

This research tested the hypothesis that young children's bias to generalize names for solid objects by shape is the product of statistical regularities among nouns in the early productive vocabulary. Data from a 4-layer Hopfield network suggested that the statistical regularities in the early noun vocabulary are strong enough to create a shape bias, and that the shape bias is overgeneralized to nonsolid stimuli. A 2nd simulation suggested that this overgeneralization is due to the dominance of names for shape-based categories in the early noun vocabulary. Two subsequent longitudinal experiments tested whether it is possible to create word learning biases in children. Children 15-20 months old were given intensive naming experiences with 12 noun categories typical of the types of categories children learn to name early. The children developed a precocious shape bias that was overgeneralized to naming nonsolid substances; they also showed accelerated vocabulary development. Children taught an atypical set of nouns or no new nouns did not develop a shape bias and did not show accelerated vocabulary development.     

Mother-child separations among homeless and housed families receiving public assistance in New York City

We examined the incidence, characteristics, and predictors of separations of children from mothers in 543 poor families receiving public assistance, 251 of whom had experienced homelessness during the previous 5 years. Forty-four percent of the homeless mothers and 8% of housed mothers were separated from one or more children. A total of 249 children were separated from 110 homeless families and 34 children from 23 housed families. Children were placed with relatives and in foster care but were rarely returned to their mothers. Maternal drug dependence, domestic violence, and institutionalization predicted separations, but homelessness was the most important predictor, equivalent in size to 1.9 other risk factors. We infer that policies regarding child welfare and substance abuse treatment should be changed to reduce unnecessary placements. Studies of homeless children who remain with families may be biased if separated children are excluded.     

Object name learning provides on-the-job training for attention

By the age of 3, children easily learn to name new objects, extending new names for unfamiliar objects by similarity in shape. Two experiments tested the proposal that experience in learning object names tunes children's attention to the properties relevant for naming—in the present case, to the property of shape—and thus facilitates the learning of more object names. In Experiment 1, a 9-week longitudinal study, 17-month-old children who repeatedly played with and heard names for members of unfamiliar object categories well organized by shape formed the generalization that only objects with similar shapes have the same name. Trained children also showed a dramatic increase in acquisition of new object names outside of the laboratory during the course of the study. Experiment 2 replicated these findings and showed that they depended on children's learning both a coherent category structure and object names. Thus, children who learn specific names for specific things in categories with a common organizing property—in this case, shape—also learn to attend to just the right property—in this case, shape—for learning more object names.     

Children's internal representations,empathy, and fantasy play: a validity study of the SCORS-Q

The authors investigated relationships among internal representations, empathy, and affective and cognitive processes in fantasy play to test the validity of the Social Cognition and Object Relations Scale Q-Sort (SCORS-Q; D. Westen, 1995) with children. Eighty-six 8-10-year-olds were administered 8 Thematic Apperception Test cards, a standardized play task, and a self-report empathy measure. Teachers rated children's empathy and helpfulness. As predicted, internal representations were related to empathy, helpfulness, and quality of fantasy play. Developmental differences on the SCORS-Q were consistent with object relations theory and with results from the original SCORS. The findings support the value of internal representations as a means of understanding children's interpersonal functioning and contribute to the validity of the SCORS-Q for use with children.     

The Community Child Health Network Life Stress Interview: a brief chronic stress measure for community health research

Background and Objectives: Chronic stress is implicated in many theories as a contributor to a wide range of physical and mental health problems. The current study describes the development of a chronic stress measure that was based on the UCLA Life Stress Interview (LSI) and adapted in collaboration with community partners for use in a large community health study of low-income, ethnically diverse parents of infants in the USA (Community Child Health Network [CCHN]). We describe the instrument, its purpose and adaptations, implementation, and results of a reliability study in a subsample of the larger study cohort. Design and Methods: Interviews with 272 mothers were included in the present study. Chronic stress was assessed using the CCHN LSI, an instrument designed for administration by trained community interviewers to assess four domains of chronic stress, each rated by interviewers. Results: Significant correlations ranging from small to moderate in size between chronic stress scores on this measure, other measures of stress, biomarkers of allostatic load, and mental health provide initial evidence of construct and concurrent validity. Reliability data for interviewer ratings are also provided. Conclusions: This relatively brief interview (15 minutes) is available for use and may be a valuable tool for researchers seeking to measure chronic stress reliably and validly in future studies with time constraints.