Differential effects of task and reinforcement variables on the performance of three groups of behavior problem children

In a test of Quay's model of differential response tendencies in three basic dimensions of discordant behavior, 36 delinquent boys divided into three behavior groups — Conduct Disorder, Personality Disorder, Inadequate-Immature — del were compared on a verbal paired-associate task under four conditions of task structure: neutral and emotional content, simplicity and complexity; and two reward conditions: material and verbal. Predictions were that the Conduct Disorder and Inadequate-Immature group would perform optimally under conditions of simple emotional task structure and material reward as opposed to the Personality Disorder group, who would demonstrate optimal performance under verbal reinforcement and reflect an interaction effect for task complexity and emotionality. Results confirmed the basic hypothesis of differential responsiveness as a function of subject variables. Directions of the differences indicated that task variables also produced critical effects.     

服务破坏行为：概念、测量与相关变量

服务破坏行为是指服务行业组织成员在向顾客提供服务的过程中,故意做出的对服务造成负面影响的行为,也是以往研究中关于工作场所中的破坏行为在服务行业中的体现;服务破坏行为的表现主要有四种类型：习惯且私下的服务破坏,习惯且公开的服务破坏,偶发且私下的服务破坏,偶发且公开的服务破坏;服务破坏行为的测量方法主要有：访谈法,问卷调查法和情景投射法;从个人、群体、组织与环境四个水平分析服务破坏行为的前因变量,从对个体、服务绩效及组织绩效三个方面探讨服务破坏行为的结果变量;该领域未来的研究应着重于进一步改进测量的方法,分析相关变量之间的作用机制,寻求控制服务破坏行为的有效对策,拓展视野,进一步扩大研究中被试的类型及行业领域     

Automated cognitive testing of monkeys in social groups yields results comparable to individual laboratory-based testing

Cognitive abilities likely evolved in response to specific environmental and social challenges and are therefore expected to be specialized for the life history of each species. Specialized cognitive abilities may be most readily engaged under conditions that approximate the natural environment of the species being studied. While naturalistic environments might therefore have advantages over laboratory settings for cognitive research, it is difficult to conduct certain types of cognitive tests in these settings. We implemented methods for automated cognitive testing of monkeys (Macaca mulatta) in large social groups (Field station) and compared the performance to that of laboratory-housed monkeys (Laboratory). The Field station animals shared access to four touch-screen computers in a large naturalistic social group. Each Field station subject had an RFID chip implanted in each arm for computerized identification and individualized assignment of cognitive tests. The Laboratory group was housed and tested in a typical laboratory setting, with individual access to testing computers in their home cages. Monkeys in both groups voluntarily participated at their own pace for food rewards. We evaluated performance in two visual psychophysics tests, a perceptual classification test, a transitive inference test, and a delayed matching-to-sample memory test. Despite the differences in housing, social environment, age, and sex, monkeys in the two groups performed similarly in all tests. Semi-free ranging monkeys living in complex social environments are therefore viable subjects for cognitive testing designed to take advantage of the unique affordances of naturalistic testing environments.     

A comparison of disconfirmatory, confirmatory and control strategies on Wason's 2-4-6 task

Attempts to instruct subjects to falsify on inference tasks designed to model scientific problem-solving have indicated that, in most cases, falsification does not lead to improved performance. The only study in which instructions to falsify did improve performance was done with groups, using a novel inference task. The present study is an attempt to replicate the success of falsification in the group study with subjects run individually on an inference task that has been used extensively in the literature: Wason's 2-4-6 problem. Each subject was run in one of three strategy conditions: confirmatory, disconfirmatory or control (no-strategy).

Results indicated that subjects in the disconfirmatory condition solved the 2-4-6 problem significantly more often than subjects in other conditions. The superior performance of disconfirmatory subjects was explained by the fact that they deliberately sought and obtained significantly more falsificatory information than subjects in other conditions.

The critical difference between this study and previous attempts to instruct individual subjects to falsify on the 2-4-6 task is that subjects in the present study were given no feedback as to whether their guesses were right or wrong until the experiment was over. The implications of this result for scientific problem-solving are discussed.     

The prediction of group motor performance from individual member abilities

Two experiments were conducted to investigate the prediction of group performance on the motor-maze task from individual member abilities. In both experiments subjects performed 20 individual trials on the maze task in an initial session prior to the actual experiment. On the basis of these individual performance scores, two-person groups were formed so that the groups represented a range of average ability levels and a range of discrepancies in abilities between partners. In Experiment 1, all groups performed a cooperative and a noncooperative group task in separate sessions both involving competition with another group. Only the cooperative group task was used in Experiment 2, but all groups performed under both competitive and noncompetitive conditions. Multiple regression analyses yielded a moderate, positive relationship between member abilities and group performance in both experiments; group performance on the highly cooperative task was dominated by the lower-ability partner.     

Type A behaviour pattern and attentional bias in relation to anger/hostility, achievement, and failure

Type A subjects are characterised by dysfunctional cognitions related to themes of competitiveness, achievement, and hostility. The present experiment investigated attentional biases for words relevant to the content of these dysfunctional schemata in Type A individuals. After completing the MMPI-2 Type A Scale, subjects completed two alternative versions of a visual probe detection task (administered 4–12 days apart) which contained achievement, failure, and anger/hostility/aggression related words. Prior to testing at time 1, subjects were told that the purpose of the procedure was to collect normative data only. Prior to testing at time 2, subjects were told that performance on the test was known to be closely related to IQ and that they could compare their performance with that of other subjects following completion of the task. Type A subjects directed attention towards anger/hostility/aggression words under low performance motivation conditions but away from such words under high performance motivation conditions. Type A subjects also showed less selective attention to failure words than Type B subjects, and no group differences were detected for achievement related words. The results are discussed with reference to models of dysfunctional cognitive processing, and the role of anger/hostility, in particular, in Type A personality.     

Developmental and individual differences in performance on phonological synthesis tasks

This study was conducted in order to examine the role of individual differences in working memory and lexical access in accounting for age and reading skill related differences in performance on phonological synthesis tasks. The performance of 28 kindergarten, first-, and second-grade children with normal reading skills, as well as that of 28 reading-disabled second graders, was compared under four testing conditions. The testing conditions were formed by completely crossing rate of presentation of phoneme strings with type of stimulus to be blended (real or nonword). Both independent variables affected performance on the blending tasks, with better performance obtained at faster presentation rates and with real words. There was a developmental discontinuity in overall performance, with the kindergarten children obtaining substantially lower scores than the first or second graders. In the comparison of second-grade good and poor readers, there was a significant interaction between groups, presentation rates, and type of stimulus. The findings are discussed in terms of their implications for a general model of performance on the sound blending task, as well as their value for interpreting individual differences on the task.     

Competition, cooperation, satisfaction, and the performance of complex tasks among air force cadets

Forty-eight U.S. Air Force Academy cadets were studied to examine the effects of individual attitudes and organizational reward structures on the performance of a complex, integrative task. An attitudinal survey was used to measure each subject’s preference for cooperative or competitive situations. Distinctly different group environments were created by giving four groups of six subjectscompetitive instructions and another four groupscooperative instructions. The performance criterion was the “sum” score across eight trials of a complex arcade-type computer game which required one subject to control horizontal movement and another to control vertical movement. Although neither attitude nor reward structure alone influenced performance, their interaction was found to be very significant; subjects performed poorly when the reward structure did not match their individual orientation. Implications for military and professional training programs are discussed.     

Probability matching: encouraging optimal responding in humans.

Two hundred undergraduate students participated in a repeated-trials binary choice procedure in which choice of one outcome was correct on 75% of trials. Subjects received 192 trials and were divided into five conditions: (1) control; (2) subjects were given the actual probabilities; (3) subjects were told if they did well they could leave early; (4) competition condition; (5) midway through the task subjects were asked to recommend a strategy for another subject. Half of the subjects in each group were told that the best they could do was to be correct on 75% of the trials. This manipulation permitted assessment of the hypothesis that subjects in probability-matching tasks are seeking a strategy that will be correct on 100% of the trials. The results partially confirmed this hypothesis. In addition, two of the variables improved performance significantly (giving probabilities and asking subjects to recommend a strategy). However, while subjects in all groups improved significantly over trials, optimal choice did not occur in this task.     

Influence of memory strategies on memory test performance: A study in healthy and pathological aging

ABSTRACT

The ability to generate memory strategies is a key factor in the performance of episodic memory tasks. Whether the ability to generate memory strategies exerts an influence in the performance of memory tests in the elderly population is still a matter of debate. Here we present results from an experimental memory task (Test of Memory Strategies, TMS), comprised of five lists of words starting from an incidental learning task, and four more lists which progressively gain in their external organization of the material, reducing the necessity of mobilizing complex memory strategies. TMS has been applied to four groups of elderly patients (amnestic Mild Cognitive Impairment – aMCI, multidomain (mMCI), and Vascular Cognitive Impairment – VCI and Depression) and a healthy aging group. In conditions with low organization of the material, the mMCI and VCI groups (both showing a greater executive function impairment) have shown lower performance. However, as the material was progressively organized, they improved their performance. The aMCI group showed similar performance to the control group at the lower level of external organization but did not improve performance in conditions with a high level of external organization. The mMCI and VCI groups showed lower performance on all TMS conditions compared with controls. Discriminant analysis revealed 90% sensitivity and specificity to differentiate between groups based on TMS conditions. These results indicate how executive functions influence performance on memory tasks in elderly subjects with different neuropsychological profiles.     

Social facilitation

The effects of the presence of another individual and evaluation apprehension were independently manipulated within a 3 (alone, mere presence, observation) × 4 (none, low, medium, high evaluation) factorial design. Ten subjects (five male, five female) were randomly assigned to each of the 12 conditions. Subjects' behavioral performance on a hidden-word task and a measure of autonomic arousal were the main dependent variables. Analysis of variance results showed a significant performance difference on the hidden-word task among the four evaluation apprehension conditions as predicted. No significant effects were found for the palmar sweat conductivity measures. The results add support for the concept of evaluation apprehension as the mediating variable in producing social-facilitation effects, and suggest that arousal as an intervening variable may be multidimensional.The author wishes to thank Joseph E. McGrath, James H. Davis, and Samuel S. Komorita for their helpful comments on a previous draft of this article.     

The Relationships of Spatial Ability and Sex to Formal Reasoning Capabilities

The relationships of spatial ability and sex to performance on formal easoning tasks were examined for a group of 34 male and female college tudents. It was hypothesized that spatial ability is positively related to ormal reasoning task performance which is also related to male superiority on formal reasoning task performance. Results indicated that spatial ability vas unrelated to formal reasoning task performance and that sex differinces occurred with the balance task and the pendulum task which sugested that males were superior to females at manifesting the scheme of jroportionality and at being able to isolate variables.     

An automated version of the digit symbol substitution test (DSST)

An automated version of the Digit Symbol Substitution Test is described that employs a relatively inexpensive, commercially available microcomputer to present and score the task. Advantages of the automated DSST include: (1) objective scoring of both speed and accuracy of test performance, (2) printed copies of test scores, (3) convenient administration under standardized test conditions, and (4) the capacity for repeated assessment of an individual’s performance over time. Task performance data for individual subjects following doses of pentobarbital are presented; these data illustrate both the stability of task performance under constant conditions and the within-subjects sensitivity of task performance to experimental manipulations.     

Computer Monitoring of Work Performance: Extending the Social Facilitation Framework to Electronic Presence1

This study demonstrated the utility of employing a social facilitation framework to the study of computer monitoring of work performance. The physical presence of an observer watching a subject work on a complex task (as a supervisor might “look over an employee's shoulder“) was contrasted with four conditions involving the electronic presence of computer-based work monitoring (as a supervisor might monitor an employee's work remotely via computer) and a control condition of subjects working alone without any monitoring of their work. Task performance was severely impaired for participants who were monitored electronically as well as for those who were monitored “in person.” Two interventions, providing participants with a sense of control over their work conditions and monitoring participants as a group rather than as individuals, each reduced the negative impact of monitoring on task performance by almost 40%. Results also indicated that individuals with an external locus of control (who believe reinforcements received are primarily determined by factors outside of themselves, e. g., other people) experience greater anxiety than those with an internal locus of control under monitoring conditions. Implications of these findings for social facilitation and the rapidly expanding use of computer-based work monitoring are discussed.     

Influence of memory strategies on memory test performance: a study in healthy and pathological aging

The ability to generate memory strategies is a key factor in the performance of episodic memory tasks. Whether the ability to generate memory strategies exerts an influence in the performance of memory tests in the elderly population is still a matter of debate. Here we present results from an experimental memory task (Test of Memory Strategies, TMS), comprised of five lists of words starting from an incidental learning task, and four more lists which progressively gain in their external organization of the material, reducing the necessity of mobilizing complex memory strategies. TMS has been applied to four groups of elderly patients (amnestic Mild Cognitive Impairment - aMCI, multidomain (mMCI), and Vascular Cognitive Impairment - VCI and Depression) and a healthy aging group. In conditions with low organization of the material, the mMCI and VCI groups (both showing a greater executive function impairment) have shown lower performance. However, as the material was progressively organized, they improved their performance. The aMCI group showed similar performance to the control group at the lower level of external organization but did not improve performance in conditions with a high level of external organization. The mMCI and VCI groups showed lower performance on all TMS conditions compared with controls. Discriminant analysis revealed 90% sensitivity and specificity to differentiate between groups based on TMS conditions. These results indicate how executive functions influence performance on memory tasks in elderly subjects with different neuropsychological profiles.     

The influence of shyness on children's test performance

Background: Research has shown that shy children differ from their peers not only in their use of language in routine social encounters but also in formal assessments of their language development, including psychometric tests of vocabulary. There has been little examination of factors contributing to these individual differences. Aims: To investigate cognitive‐competence and social anxiety interpretations of differences in children's performance on tests of vocabulary. To examine the performance of shy and less shy children under different conditions of test administration, individually with an examiner or among their peers within the familiar classroom setting. Sample: The sample consisted of 240 Year 5 pupils (122 male, 118 female) from 24 primary schools. Method: Shy and less shy children, identified by teacher nomination and checklist ratings, completed vocabulary and mental arithmetic tests in one of three conditions, in a between‐subjects design. The conditions varied individual and group administration, and oral and written responses. Results: The conditions of test administration influenced the vocabulary test performance of shy children. They performed significantly more poorly than their peers in the two face‐to‐face conditions but not in the group test condition. A comparable trend for the arithmetic test was not statistically significant. Across the sample as a whole, shyness correlated significantly with test scores. Conclusions: Shyness does influence children's cognitive test performance and its impact is larger when children are tested face‐to‐face rather than in a more anonymous group setting. The results are of significance for theories of shyness and have implications for the assessment of schoolchildren.     

Individual and group modelling of aesthetic judgment strategies

Individual differences in aesthetic judgments were investigated by comparing quantitative group and individual performance models of the judgment processes. Aesthetic judgments of beauty over novel, formal, graphic patterns were collected from 34 non‐artist college students using a two‐step ranking‐rating procedure. Their judgment processes were individually modelled using Judgment Analysis. The participants showed noted individual differences. Certain features of the stimulus material, which were considered to contribute to the picture's beauty by one participant, were used in an opposing fashion by another. A group model was derived based on the average ratings of the patterns' beauty. It was concluded that the group model was not an adequate representation of the present data, whereas the data revealed systematic judgment processes at the individual subject level.     

An acute application of transcranial random noise stimulation does not enhance motor skill acquisition or retention in a golf putting task

Transcranial random noise stimulation (tRNS) is a brain stimulation technique that has been shown to increase motor performance in simple motor tasks. The purpose was to determine the influence of tRNS on motor skill acquisition and retention in a complex golf putting task. Thirty-four young adults were randomly assigned to a tRNS group or a SHAM stimulation group. Each subject completed a practice session followed by a retention session. In the practice session, subjects performed golf putting trials in a baseline test block, four practice blocks, and a post test block. Twenty-four hours later subjects completed the retention test block. The golf putting task involved performing putts to a small target located 3 m away. tRNS or SHAM was applied during the practice blocks concurrently with the golf putting task. tRNS was applied over the first dorsal interosseus muscle representation area of the motor cortex for 20 min at a current strength of 2 mA. Endpoint error and endpoint variance were reduced across the both the practice blocks and the test blocks, but these reductions were not different between groups. These findings suggest that an acute application of tRNS failed to enhance skill acquisition or retention in a golf putting task.     

Transfer of a memorization strategy in 10-year-old children: study of individual differences]

The spontaneous or induced use of an organization strategy is examined on free recall tasks with 10-year-old children classified as rather global or rather analytical at the Group Embedded Figures test. The experimental procedure include three successive and identical tests followed by two deffered tasks, one requiring a transfer of maintenance and the other a transfer of generalization. The experimental group, who attended a simple illustration of the organization strategy before the second test, applied the strategy quickly and successfully: for these subjects, one does not note differences between global or analytical subjects in the recall performance; however, the global subjects modify their study strategy of the material on the generalization task. For the control group, global or analytical subjects have a different evolution for the performance and the strategic attitude according to the procedure. The analytical subjects are different from global subjects on the generalization task.