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241.
Two experiments were performed that involved an initial word-identification task in which the acoustic signal was degraded by either 50% or 60% compression of the recorded words. A control group was tested at the original recording rate (0% compression). The compression manipulation was successful in increasing the number of identification errors. During the second stage of the experiments, words were read at a normal rate. In Experiment 1, the subjects indicated whether each word had appeared on the prior list, and in Experiment 2, the subjects estimated the number of times each word had been read on the prior list. The false-negative rate decreased and frequency ratings increased as a function of the number of prior presentations (one, two, or three) of the target words. The most interesting result was that the effect of repetitions was present even for words that had been misperceived. 相似文献
242.
Michael J. Balthazor Richard K. Wagner William E. Pelham 《Journal of abnormal child psychology》1991,19(1):35-52
There appear to be beneficial effects of stimulant medication on daily classroom measures of cognitive functioning for Attention Deficit Disorder (ADD) children, but the specificity and origin of such effects is unclear. Consistent with previous results, 0.3 mg/kg methylphenidate improved ADD children's performance on a classroom reading comprehension measure. Using the Posner letting-matching task and four additional measures of phonological processing, we attempted to isolate the effects of methylphenidate to parameter estimates of (a) selective attention, (b) the basic cognitive process of retrieving name codes from permanent memory, and (c) a constant term that represented nonspecific aspects of information processing. Responses to the letter-matching stimuli were faster and more accurate with medication compared to placebo. The improvement in performance was isolated to the parameter estimate that reflected nonspecific aspects of information processing. A lack of medication effect on the other measures of phonological processing supported the Posner task findings in indicating that methylphenidate appears to exert beneficial effects on academic processing through general rather than specific aspects of information processing. 相似文献
243.
William E. MacLean Jr. David N. Ellis Holly N. Galbreath Leslie F. Halpern Alfred A. Baumeister 《Journal of abnormal child psychology》1991,19(3):319-330
The developmental course of rhythmic motor behavior was followed longitudinally for three groups of preambulatory children — normally developing, Down syndrome, and those with profound motor impairment. The groups differed in chronological age but were comparable with respect to motor age. The motor impaired subjects displayed significantly less rhythmic motor behavior than the nondisabled and Down syndrome groups. In comparing particular subtypes of rhythmic motor behavior, differences were found in both the average number of bouts and duration of subtypes among the groups. Longitudinal analyses of the data over the entire observation period revealed that the rhythmic motor behavior of the children with Down syndrome was more similar to that exhibited by the nondisabled children than was the rhythmic motor behavior of the children with motor impairment. However, there was considerable variability among the groups in several particular subtypes.This research was supported by grants from the National Institute of Child Health and Human Development (HD 17650 and HD 07226).The authors acknowledge the assistance of Robert E. Arendt, Grant Youngquist, Michael Hohn, and Charles Lowitzer in obtaining the observational data and thank the families of the subjects for their enthusiasm and dedication to the project.This study was presented at the 23rd Annual Gatlinburg Conference on Research and Theory in Mental Retardation and Developmental Disabilities, April 21, 1990. 相似文献
244.
William E. Pelham Richard Milich E. Mark Cummings Debra A. Murphy Elizabeth A. Schaughency Andrew R. Greiner 《Journal of abnormal child psychology》1991,19(4):407-426
We investigated the effects of background anger, provocation, and methylphenidate on emotional, physiological, and behavioral responding in children with attentiondeficit hyperactivity disorder (ADHD) with and without concurrent aggression. Our study revealed that ADHD boys showed more emotional and physiological distress when exposed to an interaction in which an administrator chastised each boy's favorite counselor, compared to a friendly interaction between the two adults. The background anger manipulation did not affect the aggressive behavior of the boys against an opponent in an aggressive game. High-aggressive (HA) ADHD boys were more likely to respond to provocation with aggression than low-aggressive (LA) ADHD boys, but only LA boys showed increased physiological reactivity with increasing provocation. Methylphenidate resulted in increased heart rates under all conditions and did not interact with any of the other findings.This project was conducted while the first author had the support of National Institute of Alcohol Abuse and Alcoholism grant AA 06267.The authors wish to thank the staff members of the 1987 Summer Day Treatment Program who assisted in conducting this project. The authors also express their appreciation to Karen Guthrie for coordinating the medication assessment and to Hart Blanton for computer programming. 相似文献
245.
Peter A. Wyman Emory L. Cowen William C. Work Gayle R. Parker 《American journal of community psychology》1991,19(3):405-426
Reports findings from interviews with parents of demographically-comparable groups of highly-stressed urban children with stress-resilient (SR) and stress-affected (SA) outcomes at ages 10-12. SR and SA children were compared on family milieu and child development variables assessed within a developmental framework. Compared to SAs, parents of SRs scored higher on variables reflecting parent perceptions of a nurturant caregiver-child relationship and self-views as effective caregivers, in the context of positive discipline practices, a child's positive early temperament, and support for primary caregivers. A discriminant function analysis identified seven variables that optimally differentiated the groups and correctly classified 86% of the Ss as SR or SA. 相似文献
246.
In this paper we consider several issues about single-patient versus syndrome-based research in response to E. Zurif, D. Swinney, and J. A. Fodor's (1991, Brain and Cognition, 16, 198-210) criticism of A. Caramazza and W. Badecker (1989, Brain and Cognition, 10, 256-295). We argue that these authors have failed to provide convincing arguments in favor of syndrome-based research. In particular, we show that the specific example--a study by D. Swinney, E. Zurif, and J. Nicol (1989, Journal of Cognitive Neurosciences, 1, 25-37)--given by these authors as a demonstration of the usefulness of syndrome-based research to inform theories of normal language processing does not in fact serve this purpose. 相似文献
247.
William S. Pooler 《Sex roles》1991,25(9-10):569-576
In both 1985 and 1988, college student preferences for the sex of an only child were examined using social surveys. For both years, it was found that male students strongly prefer a male child, but that female students moderately prefer a female child. Gender of respondent accounted for most of the sex preference difference. The sex role attitude of agreement with having the wife retain her own name was the only other variable significantly related to sex preference. It is argued that differing male-female role expectations for women as wives and mothers partly explained the gender differences in sex preference for a child. 相似文献
248.
Dr. Paul Kymissis M.D. William L. Licamele M.D. Sandra Boots M.S.W.L.C.S.W. Edwin Kessler M.D. 《Group》1991,15(3):163-167
Although group therapy is widely used in the treatment of children and adolescents, there has been little attention paid to establishing training standards and developing comprehensive programs for training psychiatry fellows in child and adolescent group psychotherapy. The authors conducted two surveys of child and adolescent training programs. After reviewing the literature, they present the data from their surveys, compare similarities and differences, and discuss trends. Finally, they propose a model for training in child and adolescent group therapy. 相似文献
249.
William Irons 《Zygon》1991,26(1):49-89
Abstract. This paper presents and criticizes. Alexander's evolutionary theory of morality (1987). Earlier research, on which Alexander's theory is based, is also reviewed. The propensity to create moral systems evolved because it allowed ancestral humans to limit conflict within cooperating groups and thus form larger groups, which were advantageous because of intense between-group competition. Alexander sees moral codes as contractual, and the primary criticism of his theory is that moral codes are not completely contractual but also coercive. Ways of evaluating Alexander's theory as well as modified versions of it are discussed. 相似文献
250.