Using dynamic field theory to rethink infant habituation

Much of what psychologists know about infant perception and cognition is based on habituation, but the process itself is still poorly understood. Here the authors offer a dynamic field model of infant visual habituation, which simulates the known features of habituation, including familiarity and novelty effects, stimulus intensity effects, and age and individual differences. The model is based on a general class of dynamic (time-based) models that integrate environmental input in varying metric dimensions to reach a single decision. Here the authors provide simulated visual input of varying strengths, distances, and durations to 2 coupled and interacting fields. The 1st represents the activation that drives "looking," and the 2nd, the inhibition that leads to "looking away," or habituation. By varying the parameters of the field, the authors simulate the time course of habituation trials and show how these dynamics can lead to different depths of habituation, which then determine how the system dishabituates. The authors use the model to simulate a set of influential experiments by R. Baillargeon (1986, 1987a, 1987b) using the well-known "drawbridge" paradigm. The dynamic field model provides a coherent explanation without invoking infant object knowledge. The authors show that small changes in model parameters can lead to qualitatively different outcomes. Because in typical infant cognition experiments, critical parameters are unknown, effects attributed to conceptual knowledge may be explained by the dynamics of habituation.     

Young infants reach correctly in A-not-B tasks: on the development of stability and perseveration

This paper examines the development of perseverative reaching in the A-not-B task. We describe two recent models that view perseveration as a sign of developmental progress toward stability. In Experiment 1, we test the novel prediction from both models that very young infants should not perseverate in the A-not-B task whereas older infants should. We tracked infants' behavior monthly on the A-not-B task and found that infants reached correctly at 5 months, and only perseverated at 7 and 8 months of age. Experiment 2 provides further evidence on the role of motor development in the emergence of perseveration by exploring the connection between perseveration and detailed changes in reach kinematics in two infants across the first year. These data together suggest that perseveration is a sign of developmental achievement on the path to stable and flexible behavior.     

Property rights, genes, and common good

This paper applies aspects of Hugo Grotius's theologically informed theory of property to contemporary issues concerning access to the human DNA sequence and patenting practices. It argues that Christians who contribute to public debate in these areas might beneficially employ some of the concepts with which he worked--notably "common right," the "right of necessity," and "use right." In the seventeenth century, wars were fought over trading rights and access to the sea. In the twenty-first century, information and intellectual property are the issues of the day. Grotius's writings serve to correct the overemphasis in modern liberalism on individual rights, and have practical application to the debate concerning the reduction of the human genome to the status of private property.     

WISC-R subtest but no overall VIQ-PIQ difference in Dutch children with PDD-NOS

VIQ-PIQ differences have been studied in children with autism and Asperger syndrome but have not been studied in a separate group of children with PDD-NO, although, PDD-NOS has a much higher prevalence rate than autism and deficits in communication and social interaction are severe. The Wechsler Intelligence Scale for Children-Revised (WISC-R) was administered to 100 children, aged 6-12 years, with PDD-NOS (n = 76), autism (n = 13), and Asperger syndrome (n = 11). PDD-NOS was diagnosed using explicit research criteria. No overall differences between VIQ and PIQ were found in PDD-NOS and autism. Peaks in the subtest scores on Information, Similarities, Picture Arrangement, and Mazes, and troughs in the subtest scores on Comprehension, Digit Span, and Coding were demonstrated in children with PDD-NOS. Their score on the Freedom from Distractibility factor was lower than the scores on the Verbal Comprehension factor and the Perceptual Organization factor. Children with PDD-NOS seemed to have a similar VIQ-PIQ profile as children with autism, and on the subtest level children with PDD-NOS showed some similarities to children with Asperger syndrome or autism. It was not possible to distinguish PDD-NOS from autism or Asperger syndrome by using IQ scores.     

Decreased Sensitivity to Phonemic Mismatch in Spoken Word Processing in Adult Developmental Dyslexia

Initial lexical activation in typical populations is a direct reflection of the goodness of fit between the presented stimulus and the intended target. In this study, lexical activation was investigated upon presentation of polysyllabic pseudowords (such as p rocodile for crocodile) for the atypical population of dyslexic adults to see to what extent mismatching phonemic information affects lexical activation in the face of overwhelming support for one specific lexical candidate. Results of an auditory lexical decision task showed that sensitivity to phonemic mismatch was less in the dyslexic population, compared to the respective control group. However, the dyslexic participants were outperformed by their controls only for word-initial mismatches. It is argued that a subtle speech decoding deficit affects lexical activation levels and makes spoken word processing less robust against distortion.     

Bilingualism and Creativity in Early Childhood

This study examined the possible effect of bilingualism on creativity in nonmathematical and mathematical problem solving among bilingual and monolingual preschoolers. Two groups of children (M age = 71.9 months, SD = 3.6) from the same monolingual kindergartens participated in this study: 15 Russian/Hebrew balanced bilinguals and 16 native Hebrew-speaking monolinguals. All children were administered the Working Memory Test, the Verbal (Semantic) Fluency Test, the Pictorial Multiple Solution Task on general creativity, and the Creating Equal Number Task on mathematical creativity. The results showed that balanced bilingualism has a positive effect on the development of creativity in problem solving, but that the effect differs according to the domain: verbal, general, or mathematical creativity.     

Gender-related inequalities in the division of family work in close relationships: A social psychological perspective

We offer a social psychological perspective on gender-related inequalities in close relationships and integrate two lines of research that have focused on the intrapersonal perceptions and interpersonal consequences respectively of the gendered division of labour. We start with a brief summary of research on gender-related inequalities in the division of labour and discuss prior explanations and paradigms. We then address the extent to which spouses consider the division of labour as fair and the factors that contribute to perceptions of (un)fairness. Central to our argument is the distributive justice framework (<citeref rid="b76">Major, 1987</citeref>, <citeref rid="b77">1993</citeref>; <citeref rid="b113">Thompson, 1991</citeref>) which claims that fairness judgements are affected by people's wants and values, comparison standards, and justifications. In the following section, we address the question of whether dissatisfaction over the division of labour causes relationship conflict and how couples manage these conflicts. The main argument is that conflict over the division of labour generally comprises an asymmetrical conflict structure (with wives as complainants and husbands as defenders of the status quo), which elicits asymmetrical conflict interaction patterns (i.e., demand/withdraw interaction) that result in asymmetrical outcomes (i.e., status quo maintenance). Finally, we summarise the main conclusions and address contributions to theory and research as well as directions for further research.     

Perceived emotional intelligence and its relationship with perceptions of effectiveness in negotiation

In this study, we examined possible connections between perceived emotional intelligence (PEI) and effectiveness during the negotiation process in a sample of 123 workers from different organizations. Participants completed a set of questionnaires, including an exploration of the predictive and incremental validity of PEI measured by Trait‐Meta‐Mood Scale. Moreover, personality traits were carefully controlled to test the percentage of variance that PEI accounted for in efficiency during negotiation. Multiple regression analyses revealed that emotional repair accounts for part of the variance in the balance of power and in procedural flexibility that cannot be explained by personality traits alone. Thus, our results show that emotional repair accounts for negotiation effectiveness in a way that is independent of personality traits.     

Books

Abstract

Bassov, M. General Principles of Pedology. Moscow; Leningrad, 1928. Pp. 744.

Freud, S. The Future of an Illusion. New York: Horace Liveright and the Institute of Psycho-analysis, 1928. Pp. 98.

Thirty-Four Psychologists. Feelings and Emotions: The Wittenberg Symposium. (Edited by M. L. Reymert.) Worcester, Mass.: Clark Univ. Press. 1928. Pp.xi+454. $6.00.¹

Pillsbury, W. B. The History of Psychology. New York: Norton, 1929. Pp. 326.

Kupky, O. The Religious Development of Adolescents. (Trans. by W. C. Trow.) New York: Macmillan, 1928. Pp. vii+138. $1.50.

Goddard, H. H. School Training of Gifted Children. Yonkers, N. Y.: World Book Co., 1928. Pp. xii+226.