Sex-typing in infancy: The role of the father

Recent research on mother-infant interaction has provided little empirical support for the role of environmental factors in early sex-role development. In this paper, considerable support for the father's role is presented. Specifically, the research on mother- and father-infant interaction patterns is reviewed in order to describe developmental changes in the nature of differential treatment of the sexes during the first two years of life. Together, the studies reviewed highlight the importance of the father in early sex-role socialization, delineate a developmental model of the early differential treatment of the sexes, and provide clues as to the origins of later childhood sex differences in verbal and visual-spatial abilities.     

The role of within-category variability in category-based induction: a developmental study

The present studies tested the hypothesis that strong assumptions about within-category homogeneity impede children's recognition of the inductive value of diverse samples of evidence. In Study 1a, children (7-year-olds) and adults were randomly assigned to receive a prime emphasizing within-category variability, a prime emphasizing within-category similarities, or to not receive a prime. Only following the variability prime, children demonstrated a reliable preference for evaluating diverse over nondiverse samples to determine whether there is support for a category-wide generalization. Adults demonstrated a robust preference for diverse samples in all conditions. These effects extended beyond the specific categories included in the prime, as well as to multiple types of test questions. Study 1b demonstrated that priming variability leads children to select diverse samples only when doing so is informative for induction. Implications for conceptual development are discussed.     

Neuromuscular Control of Posture in the Infant and Child

This study explored the effects of vision and maturation on the characteristics of neuromuscular responses underlying balance control in both seated and standing children of five age groups (3½–5 months, 8–14 months, 2–3 years, 4–6 years, and 7–10 years). A platform was used to unexpectedly disturb the child’s balance in the anterior or posterior direction. Responses of the leg, trunk, and neck muscles were recorded using surface electromyograms.

Vision was not required for the activation of these responses in any of the age groups tested. However, comparison of muscle response latencies of standing children to posterior platform translation in the two visual conditions showed a significant reduction in latency for neck flexors in the 2- to 3-year-olds with vision removed and an increase in the total number of monosynaptic reflexes. No reduction in latency was found in the older age groups. The hypothesis of a shift from an early long latency visual dominance to a shorter latency proprioceptive one during childhood is discussed.

Postural control showed a cephalo-caudal developmental gradient with postural responses appearing first in the neck, then trunk, and finally, legs, as children developed from 3 to 14 months of age. A wide variety of response patterns was seen in the 3- to 5-month-olds, indicating that postural responses are not functional prior to experience with stabilizing the center of mass.     

The concept of development in contextualism

Contextualism, a world view or paradigm which suggests the role of social, cultural, and historical change in individual development, became the focus of increasing interest throughout the 1970s. Nevertheless, despite the suggestion that contextualism offered a new philosophical position from which to derive concepts and theories of development, criticism occurred because it was believed that the dispersive nature of contextualism obviated the formulation of a useful definition of development. We review the characteristics of the contextual paradigm and argue for a principled integration (as opposed to an eclectic one) between selected features of contextualism and of organicism. The former approach offers a dispersive view of the nature of variables involved in development and the latter provides an integrative one. We attempt to forge a probabilistic epigenetic, or developmental-contextual, paradigm for the study of human development, one which relies on the concept of integrative levels and which conceives of the causal variables of development as interacting in a temporally probabilistic manner.     

PHONOLOGICAL CONTRASTS AND WORD‐DECODING SKILLS OF THE READER OF ENGLISH AS A SECOND LANGUAGE

ABSTRACT

The purpose of the following study was to investigate the extent to which phoneme and grapheme‐phoneme contrasts between English and Spanish are associated with word‐decoding problems in Spanish‐speaking adults who are early readers of English. To test whether such a co‐occurrence exists, word‐decoding exercises were administered to four groups of Spanish‐speaking subjects. The groups were organized on the basis of English‐language proficiency. Significant differences in word‐decoding performance appeared between words containing letter‐sounds found in both Spanish and English and those with letter‐sounds not found in Spanish.     

The Effects of Religiosity on Psychopathology in Emerging Adults: Intrinsic Versus Extrinsic Religiosity

Recent research has suggested that religion may play an important role in determining mental health. Although research has examined the effects of religiosity on specific types of psychopathology, less research has examined psychopathology broadly in the context of particular aspects of religion. Thus, the current study examined intrinsic and extrinsic religiosity and a range of psychopathology in 486 emerging adult college students. Results of a MANOVA indicated a main effect for intrinsic religiosity on a range of psychopathology and an interaction effect between intrinsic and extrinsic religiosity on antisocial personality problems. Implications and limitations of the current study are discussed.     

UNDERSTANDING GRADUATE WOMEN'S REENTRY EXPERIENCES

This multiple case study describes the experiences of reentry women in psychology doctoral programs at a major Midwestern research university and illustrates the usefulness of the qualitative case-study method in exploring women's experiences. Semistructured interviews were conducted with four women who were purposefully selected as information-rich participants. Observations and informal interviews were also conducted over a period of up to 2½ years. Eight themes emerged from the data and have been labeled: the decision to return, expectations versus reality, measuring up, frustrations and difficulties, changing family relationships, the necessity of organization, do it and get on with life, and rewards. This article illustrates that case-study research can be a powerful tool for feminist researchers to document women's experiences.     

Spatial gating effects on judged motion of gratings in apertures.

Wallach has described in qualitative terms the movement of lines behind apertures. We related the data he obtained to the aperture problem, constructed a model of movement perception, and carried out tests of the model. Experiment 1 was a parametric study, and showed the conditions under which a reliable illusion (the barber pole illusion) of diagonal movement of lines along an aperture could be obtained, and when fluctuating judgements or veridical percepts were obtained. On the basis of this study a dipole model was constructed. The model was further developed and tested. In experiment 2 the effects of total area of stimulation were examined: diagonal gratings were viewed behind multiple apertures. In experiment 3 the effects of local signs were examined: diagonal gratings were viewed in an aperture which had edges cut in small steps and stairs, with the risers parallel to the grating, and the treads parallel to the direction of motion of the grating. Experiment 4 was designed to test a prediction about the motion aftereffect of dots near and far from the point of fixation, and the results confirmed the model. It was concluded that the model accounts for the barber pole illusion and, generally, for the movement of gratings in apertures.