A two year follow-up study of public vocational school graduates

A 2-year follow-up study of public vocational school graduates revealed that the graduates successfully obtained jobs. Among the factors deemed important by both graduates and employer, communication skills were mentioned as vital. Counseling and preparation in getting along with others were perceived by graduates as inferior. Except for cooperative work program graduates, adjustment to an 8 hr workday caused some problems.     

The effect of continuous, intermittent, and "placebo" reinforcement on the effectiveness of the conditioning treatment for enuresis nocturna

It has been suggested that intermittent reinforcement may be of value in reducing the rate of relapse in bedwetting conditioning therapy. An experiment was conducted with 30 enuretic boys to examine acquisition and extinction parameters of continuous (100%), intermittent (70% variable ratio), and “placebo” (0%) reinforcement schedules. Reinforced trials were administered as in the typical Mowrer conditioning procedure. Non-reinforced trials were achieved by means of a time delay with the subsequent alarm being activated in the parent's room rather than in the child's room. These procedures required the development of a new conditioning device which could be programmed to automatically administer the desired schedule of reinforcement. The results of the field investigation revealed that continuous reinforcement (CR) and intermittent reinforcement (IR) groups attained acquisition in approximately the same number of trials and with essentially the same success rate. Relapse rate was significantly greater in the CR group than in the IR group. The placebo group showed no improvement over the 6 weeks of treatment. The results of this study may be interpreted as supporting the tenet that relapse can be viewed and treated as an extinction of the acquired response.     

Electrical aversion therapy with alcoholics: An analogue study

Chronic alcoholic patients matched on age, education and length of problem drinking were assigned to one of three treatment conditions, with 10 subjects in each group: (1) Electrical Aversion Conditioning (high shock paired with alcohol sips); (2) Control Conditioning (very low shock paired with alcohol sips); and (3) Group Therapy (confrontation psychotherapy). Groups 2 and 3 were included to control for possible ‘attention-placebo’ and expectancy factors involved in the conditioning procedures. Subjects in each group were given instructions designed to produce high expectancy for therapeutic success. Pre-post measures of alcohol consumption and attitudes toward alcohol were obtained using an analogue ‘taste test’ assessment procedure. No statistically significant differences in reduced alcohol consumption or attitudes toward alcohol were found among the groups. Trends in the data support the contention that effects of electrical aversion may be more related to such factors as therapeutic instructions, expectancy, specificity of the procedure or experimental demand characteristics than to conditioning factors.     

The development of procedures for identifying competitive behavior in children

This study identified events in the competitive process that could be employed to discriminate between competition and individual, non-social behaviors. When children competed they overtly sought out information on how they were doing vis-à-vis their fellow competitor. In addition, their performance was a function of some competitive contingency: a reward for surpassing another. The procedures developed in this study were designed to manipulate competitive contingencies while observing their effects on task performance and social comparisons. The investigator could thus infer that competition was present when (1) subjects sought out information on how they were doing, as well as how another was doing on comparable tasks during competitive contingencies, and (2) their task performance was a function of the competitive contingency.     

Social control by adult preference in operant conditioning with children

During daily sessions four institutionalized retardates and four normal, first-grade children each played a two-choice marble dropping game while an adult experimenter sat beside and watched. When one of two colored lights was presented, two tokens were dispensed as soon as the subject dropped a marble, and when the other light was on, one token was dispensed. During choice trials that were interspersed among single-colored trials the subject was required to choose one of the two different colored holes. After the subject developed a preference for the color that earned two tokens, the experimenter stated a preference for the response that earned only one token (i.e., “I like it better when you put it into the —colored hole.”) Six of the eight subjects immediately switched to the response that earned low magnitude reinforcement when the experimenter stated his preference. Only two subjects switched back to the response that earned high magnitude reinforcement when the experimenter left the room. Subjects complied with the experimenter's preference statement regardless of whether or not it also included a negative component (i.e., what the experimenter did not like). There were no systematic differences between mentally retarded and normal subjects.     

Children's interpretation of adult nonreaction: A trial-by-trial self-report assessment and evidence for contrast effects in an observational context

The study investigated children's interpretation of blank reaction (nonreaction) from one adult to another as a function of its pairing with positive or negative overt feedback. Each child watched through a one-way mirror as an evaluating adult provided feedback to a second adult who was performing on a two-choice discrimination task. After six initial blank reaction trials, children observed one of four types of feedback combinations over 60 experimental trials: (a) right feedback on some trials and blank reactions on others, (b) wrong feedback on some trials and blank reactions on others, (c) right, wrong, and nonreaction on different trials, or (d) nonreaction on all trials. There was little evidence that children consistently interpreted blank reaction as meaning right independent of feedback combination. In contrast, in the Right-Blank and Wrong-Blank feedback combinations, children interpreted blank as meaning the opposite of the overt feedback it was paired with on over two-thirds of the trials, with no sex differences or test anxiety effects.     

Selective imitation of the passive construction through modeling

Six 4- to 5-yr-old subjects were exposed to five sessions in which an adult model used passive sentences to describe a set of modeling stimuli. Probe stimuli, which the subjects were asked to describe without benefit of modeling and without selective reinforcement were interspersed among modeling stimuli. A matched group of control subjects received probletrials but no modeling trials. Both groups of subjects were subsequently tested on their ability to comprehend active and passive sentence forms. Every subject in the experimental group produced passive sentences on probe trials even though there was considerable variability in the number of passives produced. No control subject produced passives. The modeling procedure increased the comprehension scores of the experimental group above those of the control group though the scores of both groups were above chance. The results were contrasted with earlier studies in which modeling was ineffective in producing passive usage and in which comprehension of the passive was not demonstrated by even older children.     

俄勒冈社会学习中心反社会行为预防与干预研究述评

简要回顾了美国俄勒冈社会学习中心的发展历程,重点介绍了该机构的主要研究课题内容和研究成果。该中心在应用研究领域,主要是针对问题儿童在课堂场景及其家中进行干预。其基础性研究致力于家庭、同伴以及社会背景对青少年行为发展模式的长期影响。俄勒冈社会学习中心针对青少年开展的早期经验、应激神经生理学和病原学的研究,以及以家庭、学校、福利制度、司法制度等背景开展的对收养家庭养育、受虐孩子、受监禁父母的孩子、问题青少年反社会行为的预防与干预研究对我国青少年的干预研究都富有借鉴意义     

TV cameras,public self-consciousness,and mock juror performance

In Chandler v. Florida (1981), the U.S. Supreme Court ruled that the presence of television cameras in the courtroom does not violate a defendant's constitutional right to a fair trial. Since then, several states have expanded their TV coverage rights, and the controversy has intensified. The present study tested opponents' argument that TV cameras distract jurors, thereby reducing their reliance on evidence in the decision-making process. Fifty-one community adults watched a 95-min videotape of a civil trial in the presence or absence of a camera. No effects were obtained on verdicts, awards, or a series of self-report measures. The camera did impair subjects' recall of the evidence, but this effect was dually limited—(a) consistent with an adaptation hypothesis, an initially strong distractive effect gradually diminished, resulting in a net post-trial loss of information that was not statistically significant, and (b) consistent with an individual differences hypothesis, the camera impaired the recall of subjects who were low but not high in dispositional public self-consciousness. These findings were discussed in terms of their practical implications for courtroom management and their contribution to the self-awareness literature.