A TEST OF THE FORMAL AND MODERN THEORIES OF MATCHING

Pigeons' choosing between fixed-interval and random-interval schedules of reinforcement was investigated in three experiments using a discrete-trial procedure. In all three experiments, the random-interval schedule was generated by sampling a probability distribution at an interval (and in multiples of the interval) equal to that of the fixed-interval schedule. Thus the programmed delays to reinforcement on the random alternative were never shorter and were often longer than the fixed interval. Despite this feature, the fixed schedule was not strongly preferred. Increases in the probability used to generate the random interval resulted in decreased preferences for the fixed schedule. In addition, the number of consecutive choices on the preferred alternative varied directly with preference, whereas the consecutive number of choices on the nonpreferred alternative was fairly constant. The probability of choosing the random alternative was unaffected by the immediately prior interval encountered on that schedule, even when it was very long relative to the average value. The results loosely support conceptions of a "preference for variability" from foraging theory and the "utility of behavioral variability" from human decision-making literatures.     

The sensitivity of response rate to the rate of variable-interval reinforcement for pigeons and rats: a review

The relation between the rate of a response (B) and the rate of its reinforcement (R) is well known to be approximately hyperbolic: B = kR/(R + Ro), where k represents the maximum response rate, and Ro indicates the rate of reinforcers that will engender a response rate equal to half its maximum value. A review of data reported in 17 published papers revealed that, under variable-interval schedules of reinforcement, Ro was usually lower when pigeons were the subjects than when rats were the subjects. The value of k, in contrast, did not differ consistently between pigeons and rats. Some accounts interpret Ro as the rate of alternative, unscheduled reinforcers in the situation, expressed in units of the scheduled reinforcer. So interpreted, the difference in Ro implies that less alternative reinforcement (relative to the scheduled reinforcement) typically is available to pigeons in their operant conditioning chambers than it is to rats in theirs. Whether or not that interpretation of Ro is valid, the pigeon-rat difference in Ro ensures that for reinforcer rates above about 10 per hour, response rate will be noticeably less sensitive to changes in reinforcer rate (and presumably to changes in other incentive and motivational operations) with pigeons than with rats as subjects, at least with the experimental conditions typically employed.     

Relationship of Attachment Style to Personality Factors and Family Interaction Patterns

This study investigated the relationships among attachment, personality style, and family interaction patterns. The results revealed that avoidant attachment style was associated with indirect affect expression as measured by somatic complaints, social isolation, family disengagement, and family conflict avoidance. Anxious/ambivalent style was associated with more overt expression of depression and anxiety. Family factors were not significantly related to either the anxious/ambivalent or secure styles. The implications and potential therapy benefits for use of attachment theory in family therapy and directions for future research are also addressed. Marci Leveridge, PhD, is a Licensed Health Service Provider and private practitioner in Oklahoma City. Cal Stoltenberg, PhD, is Professor, Counseling Psychology Program, University of Oklahoma, Department of Educational Psychology, 820 Van Vleet Oval, Room 321, Norman, OK 73019-2041 (cstoltenberg@ou.edu). Denise Beesley, PhD, is an Assistant Professor in the Counseling Psychology Program at the University of Oklahoma.     

Incremental Validity of Locus of Control After Controlling for Cognitive Ability and Conscientiousness

This research examined the criterion-related validity of work-specific locus of control in predicting job performance, including incremental validity after controlling for cognitive ability and conscientiousness. Data from a student sample and from a large employee sample were used to evaluate the scale properties of measures of locus of control, conscientiousness, and cognitive ability. Two concurrent criterion-related validation studies were then conducted to evaluate the incremental validity of locus of control. In both validation studies, locus of control demonstrated overall and incremental relationships with performance after controlling for ability and conscientiousness, such that employees with higher internal locus of control performed more effectively than externals.     

Commentary: What is the Meaning and Utility of the Psychopathy Concept?

The concept and measurement of psychopathy in young people is discussed with respect to five key issues: (1) the respective merits of self-reports and ratings by others; (2) whether callous/unemotional (CU) features may be more appropriately tapped by physiological measures; (3) the possible utility of genetic studies; (4) the distinctiveness of CU from other risk factors for antisocial behavior; and (5) the homogeneity of CU as a construct.     

Social anxiety in body dysmorphic disorder

Although clinical impressions suggest that patients with body dysmorphic disorder (BDD) experience distress in social situations, social anxiety in BDD has received little investigation. This study examined social anxiety in 81 patients with BDD and change in social anxiety with pharmacotherapy. Subjects completed the Social Avoidance and Distress Scale (SADS) and were assessed with measures of BDD symptomatology. Participants in a placebo-controlled fluoxetine trial completed measures at baseline and endpoint. The mean SADS score was 1.3 SD units higher than nonclinical sample means but consistent with other clinical sample means. Social anxiety was significantly correlated with BDD severity. Greater depressive symptoms as well as comorbid avoidant personality disorder, but not comorbid social phobia, were also associated with higher SADS scores. Social anxiety did not improve more with fluoxetine than placebo, yet it improved significantly more in fluoxetine responders than in nonresponders. Understanding social anxiety in BDD has implications for reducing rates of misdiagnosis and treatment dropout.     

Construct validity of a personality assessment game in a simulated selection situation and the moderating roles of the ability to identify criteria and dispositional insight

There is scant research on the validity of personality assessment games in selection situations. Therefore, in two experimental simulated selection studies, the construct validity of an assessment game developed to assess honesty-humility was tested. Both studies found no differences between a control condition and a simulated selection condition on honesty-humility game scores. Moreover, convergent and discriminant validity with self-reported personality were not affected by the manipulation. We obtained mixed evidence that individual differences in dispositional insight and the ability to identify criteria influenced the validity of the game. As the validity of the personality assessment game was not significantly affected in the simulated selection context, our findings may imply that well-designed personality assessment games can be used for high-stakes selection assessments.     

外圆内方：中国人人际关系性的潜在剖面结构及其适应性

为进一步挖掘中国人人际关系性人格特质的内涵,研究1采用“个体中心”的潜在剖面分析方法对1911名CPAI-2中国人的常模样本在人际关系性上的表现进行整体揭示。同时,为比较中西方人际关系性的不同,研究2探讨了非华人群体人际关系性的潜在剖面结构。研究3进一步在2580名大学生群体中验证中国人人际关系性上的外圆内方的潜在剖面结构,并探讨人际关系性的亚型以及哪种亚型的人在现代社会更具适应性。中国人群体的研究结果均呈现四分类模型,但这一分类模型并没有在西方样本中复现出来,并且研究3发现中国人群体中外圆内方的亚群体最具适应性。研究结合中国传统文化中的“君子人格”进行相关讨论,为当代中国人辩证统一的“外圆内方”的文化特异性的行为模式提供历史阐释及其当代生活适应性的证据。     

善良人格与道德需要满足的关系：交叉滞后研究

道德需要被认为是独立于自主、胜任和关系需要（ACR）的基本心理需要,通过对两个时间段的纵向数据分析（N = 1,187）,使用交叉滞后模型,研究探讨了善良人格与道德需要满足之间的关系。结果发现,善良人格与道德需要满足存在一定程度的跨时间稳定性;在控制了ACR和人口学信息后,善良人格与道德需要满足存在双向预测关系。研究在中国文化下为道德需要的存在提供了证据,扩展了基本心理需要相关理论,并为道德教育和人格培养提供理论依据。