Water can induce better spatial memory performance than food in radial maze learning by rats1

Abstract: Two experiments were carried out to test the differential effects of hunger and thirst on memory performance. In Experiment 1, two groups of rats were exposed to an original radial‐maze task and then to a 30‐min retention‐memory task. The food‐deprived group completed the original task more quickly than the water‐deprived group, but the thirsty group mastered the memory task more quickly than the hungry group (p < 0.01). In Experiment 2, deprivation conditions were changed from the original to the memory task. The food‐water group completed the memory task more rapidly than the water‐food group (p < 0.05). Thirst proved to constitute a more favorable condition for retention‐memory learning. The applicability of several theories is discussed.     

The end of the reading age: grade and age effects in early schooling

During the school years, psychological test norms may be indexed by age or by grade. A number of studies have shown that using age-based norms appears to produce biases associated with grade assignment. Cahan and Cohen [Child Dev. 60 (1989) 1239-1249] showed that the effect of one grade was over twice the effect of 1 year of age for most verbal cognitive ability subtests in Grades 4-6. A higher ratio might be expected for more curriculum-related areas such as reading tests. Analysis of a representative sample of 4257 Grade 1 and 2 children in Tasmanian government schools (which use relatively strict age assignment to grades) for three subtests of the Woodcock Reading Mastery Test—Revised (WRMTR): Word Identification, Word Attack, and Passage Comprehension, showed that the grade effect is about twice the age effect. This data shows that using age-based norms instead of grade-based norms for reading and other verbal ability tests may produce bias in the early school years. Psychologists should thus be primarily concerned with children's educational history, as once children have entered school other developmental factors indexed by age have less influence on children's verbal performance.     

医学伦理学是否可教及其他--关于医学伦理学教育的再思考

医学伦理学是否可教?如果可教,应该教规范还是教价值?如何拉近医学伦理学教育与现实的距离?怎样评价医学伦理学教学的效果?不仅是临床医生和卫生管理工作者,即使作为医学伦理学研究工作的学者也都对这些问题存在着不同程度的误解,这影响了医学伦理学学科地位的确立.     

Super-ordinary bias in Japanese self-predictions of future life events

Japanese are said to value being ordinary and emphasize similarity with others. We theorized that Japanese tend to perceive themselves as being ordinary, so much so that their self-predictions about future life events are biased (super-ordinary bias). Specifically, it was expected that Japanese overestimate the likelihood of experiencing common events (such as getting married or catching the flu) and underestimate the likelihood of experiencing rare events (such as winning a lottery or being murdered). We examined the effects of commonness and desirability of future life events on the relative-likelihood estimates. Our expectation was supported by three studies, involving a questionnaire, a laboratory experiment, and a mail survey. Findings are consistent with the assumed tendency to view oneself as being super-ordinary. The super-ordinary bias was also found to be independent of unrealistic optimism or pessimism.     

跨情境下集群行为的动因机制

群体性事件是当下我国典型的集群行为。本研究通过实验室情景设计的方法, 考察了跨情境下群体相对剥夺如何通过群体认同作用于集群行为, 及群体愤怒和群体效能对集群行为的影响。结果表明：1) 同一触发情境下, 群体认同调节群体相对剥夺－集群行为(意向)之间的关系。一般群体认同凸显的个体在高群体相对剥夺水平下有更强烈的集群行为参与(意向)。这源自群体认同对群体相对剥夺不同水平下群体效能与集群行为意向之间的二次调节。对于特定群体认同凸显的个体, 无论群体相对剥夺水平的高低, 都有较高的集群行为参与(意向)。这当中, 群体愤怒起到了部分中介的作用。2) 不同触发情境下, 群体认同对群体相对剥夺与集群行为意向的调节作用出现差异。该调节作用仅出现在利益无关情境中。此外, 群体愤怒与群体效能对集群行为意向的影响在不同情境下有区别：在利益无关情境中, 群体愤怒的影响显著大于群体效能; 在利益相关情境中, 群体效能与群体愤怒的影响无显著差异。本研究扩展了集群行为的双路径模型, 并为政府预防和化解群体性事件提供思路。     

项目表述效应的统计控制：以中文版生活定向测验为例

本研究以中文版生活定向测验（LOT-R）为例,使用CTCM和CTCU方法进行建模,旨在探讨中文表述的量表中是否存在项目表述效应以及影响项目表述效应的特质因素。采用中文版生活定向测验等量表组成的问卷对334名大学生进行测试。结果表明,中文版LOT-R存在项目表述效应,是一种反向题的项目表述效应,也可称为语言标签效应;在分离了反向题项目表述效应后,发现中文版LOT-R只存在乐观因子,而不再有悲观因子。这表明乐观-悲观同属于一种人格特质,而非两种不同的人格特质;反向题项目表述效应是一种结构性误差,会导致量表结构的扭曲。研究还发现担心错误和父母期望与反向题项目表述效应存在显著的负相关,表明越是担心错误或父母期望水平越高的被试,他们对反向题的项目表述效应（语言标签效应）越小。社会赞许性对反向题项目表述效应没有影响。     

Effects of valence and framing in decision-making: Assessing decision-makers' perceived domains of choice

Abstract: In comparison between choice alternatives, judgments of “How much better is a preferred option?” and “How much worse is a less preferred option?” may differ in their magnitudes. Such discrepancies are called “valence effects”. Previously, Yamagishi and Miyamoto (1996 ) observed systematic positive valence effects (“Better” exceeding “Worse”) in the domain of gains and systematic negative valence effects (“Worse” exceeding “Better”) in the domain of losses. The current experiments used the directions of valence effects as a tool to assess decision‐maker's interpretation of choice tasks under “framing effects” ( Tversky & Kahneman, 1986 ). Preferences under the framing effect switch from certain options in the domain of gains to uncertain options in the domain of losses. Two experiments showed that preferences for certain options were associated with positive valence effects, whereas preferences for uncertain options were associated with negative valence effects. Moreover, conditions wherein the framing manipulations lose the effectiveness were examined. Valence effects showed that framing effects ceased to occur when decision‐makers maintained consistent domain perceptions as pertaining to gains or to losses, across the domains of gains and losses. Implications are discussed.     

颜色范畴知觉效应发生在大脑两半球：来自纳西族和汉族的证据

采用色环搜索单任务和双任务范式, 考察语言中区分蓝、绿的汉族和语言中蓝、绿混用的纳西族对蓝色和绿色的辨别是否存在颜色范畴知觉效应(Categorical perception, 以下简称为CP效应)。结果发现：(1)纳西族对蓝色和绿色的区分比汉族困难, 体现了语言的作用; (2)语言中蓝、绿混用的纳西族与语言中区分蓝、绿的汉族都出现显著的蓝绿CP效应; (3)两个民族被试的左视野的CP效应受到图形记忆次任务的显著干扰, 说明左视野的CP效应与右脑激活有关。整个研究表明, 颜色CP效应既存在普遍的知觉机制, 也存在语言驱动机制, 语言的作用存在直接效应。研究结果支持颜色词与颜色认知的相互作用理论。     

Aligning job redesign with leadership training to improve supervisor support: a quasi-experimental study of the integration of HR practices

In this quasi-experimental study, we examine the alignment of a job redesign initiative with leadership training aimed at increasing supervisors’ opportunities for providing support to employees. In addition, we examine intervention-mediated effects on climate for innovation through increases in perceived supervisor support. To test the hypothesized process, we used employee ratings (N = 524) of perceived supervisor support and climate for innovation collected at three time points over 2 years in the home help services in seven Swedish municipalities. Results of latent growth curve analyses showed that employees in the intervention group had a stronger and positive slope of perceived supervisor support relative to the comparison group. Further, the growth trajectories of perceived supervisor support were positively associated with climate for innovation at the 24-month follow-up. The study contributes to the human resource management literature by showing that alignment of employment practices such as training with work practices such as job redesign may be a promising strategy for achieving positive outcomes at multiple levels in organizations.