The Role of Parents and Peers in Early Adolescent Substance Use: An Examination of Mediating and Moderating Effects

We examined several models representing the relations among parenting practices, family structure, peer pressure, and drug use in a sample of 443 seventh graders. The setting was an urban school system serving a high percentage of African American students from low-income families. Analyses using structural equation modeling supported a mediation model in which both peer pressure and parenting practices had direct effects on drug use, with peer pressure mediating the influence of parenting. Within this model, family structure had a significant direct effect on parenting, however, contrary to hypotheses, children from two-parent families were more likely to report that they received adequate parenting than were children from single-parent extended families. Several gender differences were also found. Peer pressure was more highly related to drug use for girls than for boys, and the relation between parenting and peer pressure was stronger for boys. Examination of a model that included moderator effects revealed that the relation between peer pressure and drug use increased as a function of poor parenting. Results of our study underscore the importance of drug prevention efforts focused on parenting practices.     

On-Line Updating of Spatial Information Druing Locomotion Without Vision

Two experiments are reported in which the control of locomotion without vision was investigated. In Experiment 1, subjects (N = 10) made similar, although less functional, locomotor adjustments when walking without vision to a target than they did when walking with vision. That result suggests that while walking without vision, the subjects updated their positions on-line with respect to a representation of the target rather than operating from a preformulated action plan. In Experiment 2, there was a significant weakening and loss of functionality of the locomotor adjustments when subjects (N = 10) had to walk without vision the correct distance to the target but in a direction opposite to its true location, as compared with when they walked without vision directly to the target. That finding suggests that the subjects were nonvisually updating their positions not with respect to an abstract representation of the target's distance but with respect to a representation of its relative location within the task environment.     

Space perception and William James's metaphysical presuppositions

William James's overtly philosophical work may be more continuous with his psychological work than is sometimes thought. His Essays in Radical Empiricism can be understood as an explicit statement of the absolute presupposition that formed the basis of Jamesian psychology: that direct experience is primary and has to be taken at face value. An examination of James's theory of space perception suggests that, even in his early work, he presupposed the primacy of direct experience, and that later changes in his account of space perception can be understood as making his view more consistent with this presupposition. In his earlier view of space perception, James argued that sensations were directly experienced as spatial, though he accepted that spatial relations between sensations may be constructed by higher order thought. In his later view, however, James argued that spatial relations were just as directly experienced as sensations. The work of T. H. Green may have prompted James to recognize the full consequence of his ideas and to realize that taking experience at face value required that spatial relations be thought of as intrinsic to experience rather than the result of intellectual construction.     

Learning to program in LISP

We have gathered protocols of subjects in their first 30 hours of learning LISP. The processes by which subjects write LISP functions to meet problem specifications has been modeled in a simulation program called GRAPES (Goal Restricted Production System). The GRAPES system embodies the goal-restricted architecture for production systems as specified in the ACT* theory (Anderson, 1983). We compare our simulation to human protocols on a number of problems. GRAPES simulates the top-down, depth-first flow of control exhibited by subjects and produces code very similar to subject code. Special attention is given to modeling student solutions by analogy, how students learn from doing, and how failures of working memory affect the course of problem-solving. Of major concern is the process by which GRAPES compiles operators in solving one problem to facilitate the solution of later problems.     

Godly play: an intervention for improving physical, emotional, and spiritual responses of chronically ill hospitalized children

An experimental two-group comparison pilot study of forty chronically ill hospitalized children was carried out at Wolfson Children's Hospital in Jacksonville, Florida. Three Godly Play interventions were given to participants in the experimental group. Children in the control group did not participate but received a fairy tale book as a control. The sample was evenly distributed with twenty (20) males and twenty (20) females. Ages ranged from six (6) to fifteen (15) years and all participants were chronically ill. Five (5) variables were studied. Of the five (5), three (3) showed significant differences before and after Godly Play: the Staic-Trait Anxiety Scale (p = .049), the Children's Depression Inventory (p = .011), and the McBride Spirituality Assessment (p = .033). A marginal difference in parent satisfaction with hospital care of children in the experimental and control groups was also determined (p = .058). Findings suggest that Godly Play had a significant effect on anxiety, depression, and spirituality of children and support the idea that the parents of children who participated in Godly Play were more satisfied with hospital care than those parents whose children did not engage in Godly Play.     

The Effect of Disruptions During Counseling on Recall of Genetic Risk Information: The Case of Cystic Fibrosis

Genetic counseling is a communication process with two main functions: information provision and supportive counseling. The information transmission function may be compromised by disruptions that occur during counseling. At least two mediators are possible: (a) disruptions may interfere with memory by creating distractions and divided attention during encoding or (b) disruptions may degrade the flow of interaction which requires that participants engage in conversation repair rather than the task at hand. This study examined both alternatives in a group of parents (N=20 families, 40 individual parents) whose infant had received a newborn screening for cystic fibrosis (CF). Upon arrival at the hospital, each parent completed a questionnaire designed to assess his or her knowledge of CF. Their interaction with the genetic counselor was videotaped and coded for the presence of disruptions. Six weeks after the counseling, parents again completed the knowledge measure. The data showed a direct negative effect for disruptions during counseling on memory for CF-related risk information six weeks later. Disruptions also produced the anticipated effect on conversation, but counter to expectations, interruptions of conversation flow was positively associated with knowledge at time 2.     

Search performance without eye movements

Visual search performance (with sets chosen to elicit both serial and parallel search patterns) under two conditions that precluded saccades was compared to the typical situation in which visual inspection of the array is possible. In one condition, the display duration was so brief that any saccades that were executed would be too late to bring the targeted portion of the array into the fovea. In the other, the display remained present until the subject's response, but eye position was monitored and trials with shifts in fixation were excluded from analysis. The latter condition produced search latencies that were nearly identical to those with free inspection. Brief exposure, in contrast, did not produce the pattern typical of serial search, presumably because of strategies induced to deal with the rapid decay of the visual array. It is concluded that saccadic eye movements play little role in the patterns of performance used to infer serial and parallel search, and that brief exposure is not a satisfactory technique for exploring the role of saccadic eye movements in visual search.     

Psychopharmacological treatment of unipolar depression within the elderly: A discussion paper

Depressive disorders are known to affect all aspects of a person's functioning and are often associated with significant psychosocial impairment. What is unclear is whether these psychosocial issues are consequences or causes of depression; what is known is that these problems do not disappear when the biological symptoms resolve. Existing data on the treatment course and outcome of depression are not generally considered as representative of the older depressed person. Discussion will take place as to whether later life depression should be conceptualized not as a categorical disorder, but as a geriatric syndrome, with multiple aetiologies requiring a combination of treatment interventions. There is general consensus that when intensive psychotherapy is directed towards appropriate patients, geriatric clientele are as able to deal with the viscitudes of intensive therapy as well as any age group. An examination will be undertaken regarding the utilization of psychotherapeutic interventions, namely psychodynamic, interpersonal and cognitive behavioural. Comparative studies have demonstrated all three to be effective, particularly in the treatment of depression. There is a great need for further understanding and research into the appropriateness and efficacy of an integration of psychotherapeutic and pharmacotherapeutic intervention in the treatment of depression, particularly within the elderly. A tantalizing array of research possibilities emerge. If we accept that unipolar depression is a bio-psychosocial phenomena, then we need to understand more about which psychopharmacological treatment paradigms need to be employed, and that perhaps the way forward inclines towards pragmatic integrationism rather than puritanist intervention.     

Simulating night visual conditions during the day with light attenuating filters

This paper describes a research technique used to simulate night visual conditions during the day with light-attenuating filters. Some of the considerations in choosing light-attenuating techniques such as attenuation of infrared and ultraviolet illumination, neutrality, and clarity are discussed. A dual density filter with less attenuation in the lower field was chosen for aviation applications so that the major instruments would be available. This dual density concept was found to be more successful for piloting than for navigation. A density of 5.1 was shown to simulate a bright clear night with a full moon; a density of 5.5 simulated a much darker night with no moon.     

Evaluation of Violence Prevention Approaches Among Early Adolescents: Moderating Effects of Disability Status and Gender

High prevalence rates of aggression during adolescence and associated adjustment difficulties for perpetrators and victims highlight the need for effective violence prevention programs. School-based prevention programs are advantageous as they occur in a key setting for youths' social and emotional development. The current study compared the efficacy of a combined universal violence prevention approach that included individual-level skill-building (i.e., lessons from Second Step) and school environment (i.e., Olweus Bullying Prevention Program; OBPP) interventions to OBPP alone. Participants were 231 sixth, seventh, and eighth graders (ages 11–15; M?=?12.6, SD?=?1.0) in middle school (48?% male, 67?% African American). A total of 14 classrooms were randomly assigned to the combined intervention (seven) or OBPP only comparison (seven) condition, split evenly across grades. Intervention effects were moderated by disability status and gender. Among students without disabilities those who received the combined intervention reported greater increases in anger regulation coping skills than those in the comparison condition. In contrast, among youth with disabilities greater increases in teacher-rated social skills were found for students in the combined intervention than students in the comparison condition at posttest. Gender-moderated effects included greater decreases in teacher ratings of externalizing problems and bullying behaviors for boys in the combined intervention versus the comparison condition at posttest. Study results inform school-based violence prevention programs and are discussed along with implications.