Interlimb coordination: Learning and transfer under different feedback conditions

The role of intrinsic and extrinsic information feedback in learning a new bimanual coordination pattern was investigated. The pattern required continuous flexion-extension movements of the upper limbs with a 90 ° phase offset. Separate groups practiced the task under one of the following visual feedback conditions: (a) blindfolded (reduced FB group), (b) with normal vision (normal FB group), or (c) with concurrent relative motion information (enhanced FB group). All groups were subjected to three different transfer test conditions at regular intervals during practice. These tests included reduced, normal vision, and enhanced vision conditions. Experiment 1 showed that the group receiving augmented information feedback about its relative motions in real-time produced the required coordination pattern more successfully than the remaining two groups, irrespective of the transfer conditions under which performance was evaluated. Experiment 2 replicated and extended the superiority of the enhanced feedback group during acquisition and retention. Experiment 3 demonstrated that successful transfer to various transfer test conditions was not a result of test-trial effects. Overall, the data suggest that the conditions that optimized performance of the coordination pattern during acquisition also optimized transfer performance.     

Illusional Beliefs in the Context of Risky Sexual Behaviors1

The function and maintenance of illusions were explored. Three groups were selected by comparing perceived risk for contracting an STD or becoming pregnant with reported sexual behaviors: realistic low risk (n - 33), realistic high risk (n= 23), and Illusional low risk (n= 16). Illusional subjects tended to avoid exposure to risk information, deny its relevance, and experience no increase in negative affect when confronted with contraceptive information. In contrast, high-risk subjects expressed interest in viewing contraceptive information, acknowledged its relevance and, among women, experienced an increase in negative affect after viewing the information. Avoidance and denial were ego-protective, primarily for illusional subjects. Implications for research on the self-regulatory effects of illusional beliefs are discussed.     

The relationship between teacher ratings of kindergarten classroom skills and second-grade achievement scores: An analysis of gender differences

The Kindergarten Performance Profile, a criterion-referenced teacher rating scale, was developed by a multidisciplinary group of public school teachers, child development specialists, and evaluators. The present study analyzed the social and work skill areas of the rating scale, focusing on the relationship of classroom skills in the fall and spring of kindergarten to second-grade achievement scores. Gender differences, as well as the impact of assessing children's skills in the fall versus the spring of kindergarten were explored. Results indicated that kindergarten work skills were significantly related to California Achievement Test scores for both boys and girls; however, kindergarten social skills were related to achievement scores for girls but not boys. Teacher ratings from either the fall or the spring were predictive of achievement test scores for girls, although different girls were identified as having problems at the two time periods: whereas spring evaluations were more strongly related to boys' later achievement. The implications of these findings for assessment programs are discussed.     

Visual search for direction of shading is influenced by apparent depth

Recent reports ofrapid visual search for some feature conjunctions-suggested that preattentive vision might be sensitive to scene-based as well as to image-based features (Enns & Rensink, 1990a, 1990b). This study examined visual search for targets defined by the direction of a luminance gradient, a conjunction of luminance and relative location that often: corresponds to ob-= ject curvature and direction of lighting in naturalistic scenes. Experiment 1 showed that such search is influenced by several factors, including the type of gradient, the shape of the contour enclosing the gradient, and the background luminance. These factors were varied systematically in Experiment 2 in a three-dimensionality rating task and in a visual-search task. The factors combined interactively in the rating task, supporting the presence of an emergent property of three-dimensionality. In contrast, each factor contributed only additively to the speed of the visualsearch task. This is inconsistent with the view that search is guided by specialized detectors for surface curvature or direction of lighting. Rather, it is in keeping with the view that search is governed by a number of “quick and dirty” processes that are implemented rapidly and in parallel across the visual field.     

Why families are not like swamps,solar systems,or thermostats: Some limits of systems theory as applied to family therapy

Family systems theory presents an answer to the riddles of mental disorder and human functioning that stands in marked contrast to other prevailing views based on linearity and traditional science. At this stage of its development, the family systems view does not provide an internally coherent, predictive, or unifying theory about humans and their problems. Further, it tends to both undercontextualize and overcontextualize behavior, substitutes blaming the family for blaming the victim, reifies and anthropomorhizes the systems metaphor, dismisses such concepts as power and responsibility, and discourages research. As one theoretical and clinical perspective among many, however, it can be helpful and eye-opening.Based on a paper presented at the Forty-fifth Annual Conference of the American Association for Marriage and Family Therapy, Chicago, 1987.     

Tigers are something else: A case for family play

This paper is an attempt to bridge the two worlds of family therapy and filial play therapy, introducing the complementary idea of play in therapy. Family play therapy challenges the idea that play is only useful in the treatment of children. Clinical examples are given and uses of play are discussed, including evaluation, play as a therapeutic tool, and the development of themes. The authors believe that therapists who are willing to be playful offer their clients a new world of therapeutic experiences.     

Single parenting: Interventions in the transitional stage

Following divorce or separation, many mother-headed families need to mourn losses, including reduced economic resources. They need to reestablish family rituals, confront such issues as time management and structural changes that can result in scapegoating or over-reliance on a parental child. Normalizing difficulties associated with parenting is important because single parents tend to internalize societal attribution of family difficulties to inadequate family structure rather than developmental stages, limited economic resources, and negative expectations about the capacity of women to head families.     

The phantom leaf effect and its implications for near-death and out-of-body experiences

The phantom leaf effect seen in Kirlian photography may help researchers better understand near-death and out-of-body experience. While the process responsible for the phantom leaf effect is unknown, variations of Rupert Sheldrake's morphogenetic field theory offer three explanations for this phenomenon. Each of these variations has different implications for near-death and out-of-body experiences.