Perceptions of methylphenidate effects on hyperactive children's peer interactions

The behavioral constructs that emerge from observers' openended impressions of methylphenidate effects on the social behaviors of hyperactive children were examined. Ninety-six undergraduates observed videotapes of two different hyperactive target boys, each playing an interaction game with three peers. One target was taking methylphenidate and the other was taking placebo. The valence and content of observers' social perceptions were analyzed. Overall, more negative than positive behaviors were detected, a pattern more pronounced for the placebo than for the medication condition. Interestingly, placebo targets received negative evaluations for poorly controlled behaviors such as noncompliance, aggression, and disruption, but medicated targets received negative evaluations for social inhibition—passive and submissive behaviors. In contrast, the boys' medication state did not consistently influence observers' perceptions of positive social behaviors. Discussion focused on the extent and consequences of medicationrelated increases in social disengagement and on the ultimate impact of stimulant treatment on hyperactive children's social worlds.A preliminary report of this study was presented at the 1990 meeting of the Society for Research in Child and Adolescent Psychopathology, Costa Mesa, CA. We are grateful for the assistance of Pam Ajang, Keri Hom, and Scott Gutentag, and for support from the Fernald Child Study Center at UCLA.     

Social judgment processes in hyperactive boys: Effects of methylphenidate and comparisons with normal peers

Although there is consensus that ADHD children have serious social problems, there is little understanding of the mechanisms underlying or accompanying such problems. To examine the possibility of atypical or faulty social reasoning, we presented ADHD and normal boys with a social perception task that entailed evaluating the behaviors of unknown peers. ADHD judges participated under both methylphenidate and placebo conditions, and on each occasion they evaluated an unfamiliar ADHD target in each medication state. In contrast to placebo, methylphenidate appeared to dampen overall response rates in ADHD judges, but there was no effect on sensitivity to medication-related differences. Regardless of their own medication state, ADHD judges identified more undesirable behaviors in peers on placebo than in those taking methylphenidate. Judges with the most serious behavior problems tended to identify the greatest number of negative behaviors in peers, especially when both judge and target were unmedicated. There were no effects of target medication status on detections of positive behaviors and few differences in detection patterns of ADHD versus normal judges. Discussion focused on the need to distinguish general regulatory from specific social-cognitive processes.This study was conducted at the Fernald Child Study Center, UCLA, and we very much appreciate the many contributions of Stephen P. Hinshaw, codirector of the program. We are also grateful to the resourceful and devoted staff and the energetic children who served as judges and targets.     

TEACHER-VERSUS PEER-MEDIATED INSTRUCTION: AN ECOBEHAVIORAL ANALYSIS OF ACHIEVEMENT OUTCOMES

In three experiments, we compared the effects of instructional arrangements that varied in: (a) teacher versus peer mediators, (b) methods used, (c) levels of student academic responding generated, and (d) content taught and tested. Instructional arrangements (i.e., tasks, structure, teacher position, teacher behavior) and students' levels of academic responding were measured by an observation system which served as an index of the independent variables. Students' accuracy on weekly spelling, arithmetic, and vocabulary tests and pre- and post-standardized achievement tests (Experiments 2 and 3 only) were the dependent variables. Results indicated that the classwide peer tutoring, compared to the teacher's procedure, produced more student academic responding and higher weekly test scores, regardless of treatment order or subject matter content (Experiment 1). The four lowest performing students in each class, in particular, benefited from peer tutoring, often performing as well as the other students. These findings were replicated in Experiments 2 and 3 wherein content taught/tested was also manipulated. Standardized test score gains were higher in those areas in which peer tutoring was used longest. Issues related to the functional analysis of instruction and achievement gain are discussed.     

Langage et individuation

Sans résumé     

Skill development and cognitive approaches to educating young children

A variety of early childhood education programs have been established in the last decade that differ markedly in their philosophical and theoretical foundations. This article illustrates how distinct foundations are reflected in all program variables in a unified program. Two unified early childhood education programs are contrasted: a skill development program based upon behaviorist theory, and a cognitive growth program based upon cognitive developmental theory. Implications of unified programs for classroom behavior and the school psychologist are discussed.     

The school psychologist as program evaluator

School psychologists are being required to evaluate educational programs. This paper discusses the role and responsibilities of a program evaluator, the programs of measurement, and the staff fear of evaluation. A model for program evaluation is then described with an illustrative example.     

Visibility distances with halogen and conventional headlights

Abstract.— Using visibility distance as a criterion, halogen and conventional continental European high and low-beam headlights were compared in a series of field experiments. On high-beam without opposing light the halogen headlights offered about 25% longer visibility distances than the conventional headlights. With both opposing cars using low-beam there was a slight advantage (<5 m) in favour of halogen headlights. The optimal dipping distance was a function of high-beam system (intensity) rather than low-beam system. Small differences in aiming, atmosphere etc. caused larger differences in visibility distance than did the headlight system.     

The role of congregations in preventive medicine

Congregations are involved in health care, but they don't know it. They have seldom examined how they do what they do to encourage healthy ways of living. A three-year action research model in the Chicago area incorporates a parish nurse on the staff of six large suburban churches. These nurses are essentially health educators and personal health counselors. A weekly intensive half-day continuing education seminar provides these six nurses with opportunities for interchange among themselves and a selected faculty. Perhaps a new specialty within nursing is being born—a minister of health to work alongside parish clergy.Granger Westberg, a Lutheran clergyman, has served for twenty-five years on the medical faculties of the University of Chicago and the University of Illinois. He was the founder of Wholistic Health Centers, Inc.