希望和乐观——两种未来指向的积极预期

在积极心理学中,希望和乐观虽然存在很大程度的概念重叠,但二者本质上是不同的概念。希望的概念核心是以目标为中心的动力思维和路径思维,乐观的概念核心是指向未来的积极预期。作为两种指向未来的积极预期,希望和乐观属于人格特质的范畴,共同成分是对目标的信念;二者的差异性在于对未来预期的方式和对预期事件的个人控制。相关研究发现,相对于乐观,希望通常是主观幸福感和学业成就更好的预测指标。未来研究应明确希望和乐观的整合,验证是否存在控制点的调节作用,并开展跨文化研究。     

Expectancy bias and the persistence of posttraumatic stress

Anxious individuals tend to overestimate the probability that encounters with anxiogenic stimuli (CS) will be followed by aversive consequences (UCS). This study examined whether such (biased) UCS expectancies predict the persistence of PTSD symptoms. A total of 265 soldiers were recruited before a four-month deployment to Iraq in 2004. About 2-5 months after deployment, 171 (65%) soldiers completed self-report scales about adverse events in Iraq and PTSD symptoms, and a UCS expectancy task. In this task, participants were exposed to a series of deployment-related and deployment-unrelated (control) picture stimuli. For each trial, the participants indicated the subjective probability that a particular slide would be followed by an imminent loud noise. Around 15 months after deployment, 130 (76%) soldiers completed surveys about PTSD symptoms again. Only a small group of participants had high levels of PTSD symptoms. Regression analyses showed that the level of PTSD symptoms at 15 months was predicted by earlier PTSD symptoms, but also and independently by an enhanced UCS expectancy to deployment-related stimuli. The findings support the notion that UCS expectancy bias contributes to the persistence of PTSD symptoms.     

Comparison of variance and covariance patterns in parallel and serial theories of timing.

Parallel and serial timing processes are analyzed for their account of the dynamics of intertrial responding in the peak procedure. A strictly serial model, such as the behavioral theory of timing (Killeen & Fetterman, 1988), does not fit the dynamic correlation pattern in the location and duration of the middle high-rate responding portion of peak trials. In contrast, the parallel scalar expectancy theory model, with a sample for memory and threshold, does fit this pattern. A modification of the serial model is presented that also accommodates the within-trial covariance pattern. The modification, which is formally equivalent to a model for human tapping (Wing & Kristofferson, 1973), entails the addition of concurrent processes operating in parallel with serial timing.     

教师期望对学生学业成绩的影响

采用教师期望评定量表、中学生学业成就动机量表,就教师期望对学生学业成绩影响的问题进行了问卷调查和数量分析。结果表明：教师期望通过影响学生的学习能力感和学业成就动机,影响学生的学业成绩;学生学业成绩的变化,对教师期望水平及其自身的学习能力感和学业成就动机也有影响;学生学习能力感和学业成就动机之间存在着互动的关系。     

Prevention, solution-focused therapy, and the illusion of mental disorders

Therapy theorists' criticism of the lack of specific mechanisms in the prevention of mental disorders is examined from the perspective of solution-focused therapy (SFT), which argues that solutions can be unrelated to problems, and that it is not even necessary to know what a problem is in order to solve it. It is suggested that the shift of attention from problems to solutions in SFT offers a conceptual framework within which the criticism is not relevant, and from which theorists of therapy and prevention can share a common outlook. This outlook involves a focus on encouraging productive, useful, positive behavior, with a corresponding deemphasis on an skepticism about current conceptualizations of mental disorders.     

Information on response requirements compared with information on food density as a reinforcer of observing in pigeons

On a variable-interval schedule, pecking the key to the pigeon's right (observing response) produced red or green displays relating to the delivery of grain and its dependence on pecking the key to the left (food key). During various blocks of sessions, mixed (no stimulus change) schedules including the following pairs of components were temporarily converted by the observing response to their corresponding multiple (correlated stimuli) schedules: variable-interval 60-s, extinction; variable-interval 60-s, variable-time (response-independent) 60-s; extinction, variable-time 60-s. Differences in food delivery maintained substantial rates of responding on the observing key, without regard to pecking requirements on the food key. Although stimuli correlated with differences in the response requirement on the food key maintained higher observing rates than those maintained by uncorrelated stimuli, they were much lower than those based on food. The value of predictive stimuli as reinforcers is determined by the value of the events predicted. In particular, the cost of pecking appears to be low, and this may place limitations on the applicability of energy-based and economic models of behavior.     

An experimental examination of alcohol consumption,alcohol expectancy,and self‐blame on willingness to report a hypothetical rape

This study experimentally examined the role of victim alcohol intoxication, and self‐blame in perceiving and reporting rape to the police using a hypothetical interactive rape scenario. Participants (N = 79) were randomly assigned to consume alcohol (mean BAC = 0.07%) or tonic water before they engaged in the scenario. Alcohol expectancy was manipulated, and participant beliefs about the beverage they thought they had consumed and their feelings of intoxication were measured. Alcohol consumption and expectancy did not affect the likelihood that the nonconsensual intercourse depicted in the scenario was perceived and would be reported as rape. Participants with higher levels of self‐blame were less likely to say they would report the hypothetical rape. Self‐blame levels were higher for participants who believed they had consumed alcohol, and were associated with increased feelings of intoxication. The implications are discussed.     

大学生一般结果期待对风险决策偏好的影响

以一般结果期待的双维结构观点为基础,按照一般结果期待的乐观期待和悲观期待的水平将184名大学生样本划分为明显乐观、明显悲观、双重倾向和倾向不明四个类型,进而探讨不同类型大学生在创业投资情境下一般结果期待对风险决策偏好的影响。结果表明,风险概率、描述框架与一般结果期待的交互作用显著,在低风险概率、积极框架下,双重倾向型一般结果期待大学生比其他三个类型的大学生表现出明显的风险寻求偏好。     

The communality-bonus effect for male transformational leaders – leadership style,gender, and promotability

Women have made considerable inroads into the workforce but remain underrepresented in leadership positions. Even though studies show that men and women hardly differ in their leadership behaviours, we argue that male and female leaders are evaluated differentially contingent on the gender-congruence of their leadership style. Drawing arguments from expectancy violation theory, we investigate evaluations of men and women who show transformational leadership (a style consisting of communal behaviours in line with stereotypes about women) and autocratic leadership (a style consisting of agentic behaviours in line with stereotypes about men). We employed a three-study research design combining two experimental studies and a two-wave field study with business leaders (overall N = 344). Overall transformational leadership resulted in higher evaluations of promotability due to higher perceptions of leaders’ communality and leadership effectiveness. Importantly, these effects were stronger for men, and men showing transformational leadership were evaluated to be more promotable than women. This implies a communality-bonus effect for male transformational leaders. There was no difference in promotability evaluations for women versus men showing autocratic leadership. This effect was mediated by agency and effectiveness perceptions for women but not for men. Implications are discussed.     

Effects of expectancy of outcome on the reactivity of self-monitoring

The present study investigated the effects of subjects' outcome expectancy on self-monitoring of a clinically relevant behavior, overeating. In conjunction with self-monitoring of eating habits, subjects received either a positive expectancy of behavior change or no expectancy regarding change. While both self-monitoring groups achieved significantly greater weight loss than controls, subjects in the expectancy group demonstrated significantly greater weight loss than no-expectancy subjects. Possible factors accounting for the disparity in findings between this and previous self-monitoring investigations are discussed.