Assessing the Incremental Algorithm: A Response to Krahmer et al.

This response discusses the experiment reported in Krahmer et al.’s Letter to the Editor of Cognitive Science. We observe that their results do not tell us whether the Incremental Algorithm is better or worse than its competitors, and we speculate about implications for reference in complex domains, and for learning from ‘‘normal” (i.e., non‐semantically‐balanced) corpora.     

The social motivation theory of autism

The idea that social motivation deficits play a central role in Autism Spectrum Disorders (ASD) has recently gained increased interest. This constitutes a shift in autism research, which has traditionally focused more intensely on cognitive impairments, such as theory-of-mind deficits or executive dysfunction, and has granted comparatively less attention to motivational factors. This review delineates the concept of social motivation and capitalizes on recent findings in several research areas to provide an integrated account of social motivation at the behavioral, biological and evolutionary levels. We conclude that ASD can be construed as an extreme case of diminished social motivation and, as such, provides a powerful model to understand humans' intrinsic drive to seek acceptance and avoid rejection.     

Ethnicity and Gender Stereotypes of Emotion

In three studies we investigated gender stereotypes of emotions among four ethnic groups in the U.S., using persons from these groups as informants about their own groups. European Americans’ reports of stereotypes were compared to those of African Americans (Study 1), Hispanic Americans (Study 2), and Asian Americans (Study 3). The examination of group differences was interpreted based on variations across ethnicities in norms concerning emotional expression and gender roles. Overall, gender stereotypes of emotion were evident among all ethnic groups studied, but European Americans’ gender stereotypes were the most gender differentiated. For example, European American stereotypes held that men express more pride than women do, but African Americans’ stereotypes of pride for men and women did not differ. Similarly, whereas among European Americans, women were stereotyped to express much more love than men do, the gender difference was smaller among Hispanic Americans and Asian Americans. These different norms may pose challenges for inter-cultural interactions, and they point to the importance of considering both gender and ethnicity simultaneously in the study of emotions.     

Relationships between attachment behavior in the laboratory and the caretaking environment

How useful are observations of patterns of attachment behavior in a structured laboratory setting for making inferences about the quality of caretaking received by an infant in the home environment? To address this question a sample of 107 12-month-old infants who had participated in a longitudinal intervention project beginning before birth through 14 months of age were observed in a structured laboratory setting. Patterns of attachment behavior were compared to maternal caretaking variables observed in the home environment as well as to ratings of the quality of the infants' play. The results indicated that attachment behavior in the laboratory can be used to make inferences about the quality of caretaking in the home environment with confidence when a consistent and unambiguous pattern of either optimal or problematical attachment behavior is present, but not when the attachment behavior pattern is inconsistent or ambiguous.     

Model-guided implementation of an instrument for program evaluation: The use of social policy and innovation models

A research program in the Netherlands is aimed at the implementation of an instrument for program evaluation in organizations for intramural treatment of juveniles with psychosocial and/or behavioral problems. The basis and guide for the implementation is a sequence of three complementary models, each model being more specific than its predecessor. The results of the research program in nine organizations suggest that the choice of an adequate guiding model depends on the policy level at which the organization is operating, the number of persons involved in the implementation, and the culture of decision-making in the organization. K. Mesman Schultz is senior investigator at the Leyden Institute for Social Policy Research (LISPOR) and director of the Research Centre for Youth-at-Risk (RCY) at the State University of Leyden, Rijnsburgerweg 100, 233 AE Leiden The Netherlands. His research mainly refers to diagnosis, decision-making and social policy in the field of youth care. W.I. Poot is investigator at LISPOR and RCY. She is in charge of the execution of utilization and implementation research projects in the field of youth care. P.H.M. van den Bogaart is senior investigator at LISPOR and RCY. He has wide experience in educational research and youth care research.     

Data analysis and the connectivity of random graphs

This paper presents empirical information on the adequacy of an asymptotic approximation developed by Erdös and Rényi dealing with the minimum number of lines needed to connect a random graph. It is shown that the approximation is poor for several data analysis applications of the result previously published in the behavioral sciences.