Observing emotion in infants: facial expression,body behavior,and rater judgments of responses to an expectancy-violating event

Eleven-month-old European-American, Japanese, and Chinese infants (ns = 23, 21, and 15, respectively) were videotaped during baseline and stimulus episodes of a covert toy-switch procedure. Infants looked longer at the object during the expectancy-violating event (stimulus episode) but did not produce more surprise-related facial expressions. American and Japanese infants produced more bodily stilling during stimulus than baseline, and American infants also produced more facial sobering. Naive raters viewing both episodes could correctly identify the expectancy-violating event. Rater judgments of surprise were significantly related to infants' bodily stilling and facial sobering. Judgments of interest were related to cessation of fussing. Thus, observer judgments of infant emotions can be systematically related to behaviors other than prototypic emotional facial expressions.     

Object recognition is mediated by extraretinal information

Many previous studies of object recognition have found view-dependent recognition performance when view changes are produced by rotating objects relative to a stationary viewing position. However, the assumption that an object rotation is equivalent to an observer viewpoint change ignores the potential contribution of extraretinal information that accompanies observer movement. In four experiments, we investigated the role of extraretinal information on real-world object recognition. As in previous studies focusing on the recognition of spatial layouts across view changes, observers performed better in an old/new object recognition task when view changes were caused by viewer movement than when they were caused by object rotation. This difference between viewpoint and orientation changes was due not to the visual background, but to the extraretinal information available during real observer movements. Models of object recognition need to consider other information available to an observer in addition to the retinal projection in order to fully understand object recognition in the real world.     

The role of priming in conjunctive visual search

To assess the role of priming in conjunctive visual search tasks, we systematically varied the consistency of the target and distractor identity between different conditions. Search was fastest in the standard conjunctive search paradigm where identities remained constant. Search was slowest when potential target identity varied predictably for each successive trial (the 'switch' condition). The role of priming was also demonstrated on a trial-by-trial basis in a 'streak' condition where target and distractor identity was unpredictable yet was consistent within streaks. When the target to be found was the same for a few trials in a row, search performance became similar to that when the potential target was the same on all trials. A similar pattern was found for the target absent trials, suggesting that priming is based on the whole search array rather than just the target in each case. Further analysis indicated that the effects of priming are sufficiently strong to account for the advantage seen for the conjunctive search task. We conclude that the role of priming in visual search is underestimated in current theories of visual search and that differences in search times often attributed to top-down guidance may instead reflect the benefits of priming.     

Prescribing conventional antipsychotics at two Veterans Administration hospitals: are there geographical differences?

The medical records of 110 patients receiving conventional antipsychotics at two geographically distinct Veterans Administration hospitals (Syracuse, New York, and Omaha, Nebraska) were reviewed. The most common reasons for continuation of conventional antipsychotics were good response and patient or physician choice. Frequently, physicians did not discuss the reasons for continuing conventional antipsychotics or the availability of alternative therapies with their patients. Geographic differences in physicians' prescribing practices of conventional antipsychotics were apparent.     

Effects of number and strength of competing solutions on the perceptual interference effect

Five-letter fragments of recently studied 8-letter words are easier to solve when presented all at once than when clarified from a more degraded form (i.e., by starting with a 2-letter fragment and adding letters). The competition explanation proposes that highly degraded stimuli activate alternative hypotheses that interfere with target identification. In Experiment 1, the number of solutions that fit the initial, 2-letter fragment was varied. Performance was better in the 2-solution than in the 1-solution condition. In Experiment 2, distractor solutions (solutions that fit the 2-letter fragment but not subsequent fragments) were either primed (previously studied) or unprimed. Solution performance was better when distractors were primed rather than unprimed. Perceptual interference appears to result from negative feedback operating on a prematurely activated correct hypothesis, rather than from competition between hypotheses.     

从心理学角度再析理学中的理欲辨

理可总称人合乎礼的诸种需要;从表现形态上看,欲是比情更为激烈的心理活动：欲具有促使人行动、情产生和“生百善”等方面的功能,人欲则具有“诱人为不善”、“害吾心”、使情变坏和损害身心健康等作用。理学中的理欲之辨也可看作是关于合理需要与不合理需要的内涵、相互关系及对待二者的态度之争。     

20世纪全球卫生发展的回顾与展望

20世纪人类的健康状况发生了革命性的转变,同时也面临着前所未有的挑战。疾病谱的改变及人口寿命的延长以及医疗费用的上涨仍然是困扰各国决策者的难题,卫生发展与改革任重道远。完善健康保障体系最理想的选择方案是政府为居民“购买”基本卫生服务,由国家财政和居民共同承担保险基金,普及初级卫生保健,鼓励多种形式办医,WHO确定的卫生工作目标是各成员国卫生系统改革与发展的指导方针。     

比喻性成语对文章段落回忆的影响

本研究采用随意学习的实验范式,探讨了结句中是否包含比喻性成语以及被试的工作记忆容量大小对文章段落回忆成绩的影响.实验中所有被试被要求阅读6个说明体的文章段落,然后接受一个有提示的回忆测验.研究发现(1)所有被试对结句中包含比喻性成语的段落回忆成绩比结句中没有比喻性成语的段落好.(2)结句中是否包含比喻性成语和被试工作记忆容量之间存在着交互作用.若结句中包含比喻性成语,段落的回忆成绩不受被试工作记忆容量的制约,反之则会.这些结果可能表明,比喻性成语的某些特点,如形象性或易记性,作为一种辅助手段促进了被试对文章内容的记忆、保持和回忆.     

普通话韵律词重音知觉

实验一研究了韵律词重音的多个声学相关物,及其对韵律词重音知觉贡献的大小,结果表明,按照贡献大小的次序,影响普通话韵律词重音感知的声学参数是：时长、音高、频谱倾斜和平均能量。实验二研究非声学参数因素对普通话韵律词重音知觉的影响,实验结果表明,听者关于普通话韵律词重音方面的语言学知识对韵律词重音的知觉有显著影响。