情景知觉中的信息界定:从主观预期到“惊奇”算法

情景信息加工是情景知觉研究领域内的核心问题。然而,不同的研究者对"情景信息"的界定并不相同。在过去80多年的时间里对情景信息的界定先后经历了研究者主观确定、观察者评估、基于情景物理特征的计算模拟等方法。Itti和Baldi等人通过比较先验概率和后验概率之间的差异,提出了"惊奇"理论。文章介绍了真实情景知觉研究中"惊奇"理论的应用及进展,并指出"惊奇"算法的拓展及界定、情景知觉过程中的注意转换与"惊奇"的关系,以及社会情景知觉中的"惊奇"应用可能是未来相关领域需要进一步探索的问题。     

原发性失眠患者的主客观睡眠特征研究

目的：了解原发性失眠患者的睡眠特点,探讨其主客观睡眠的异同点。方法：对15例原发性失眠患者、20例正常人的主观睡眠（PSQI）和客观睡眠（PSG）特点进行比较,对原发性失眠患者进行主观睡眠（PSQI）和客观睡眠（PSG）的比较。结果：原发性失眠的PSG多项指标（睡眠总时间、睡后觉醒次数、觉醒总时间、睡眠潜伏期、睡眠效率、觉睡比、睡眠维持率、REM睡眠时间和REM百分比、REM睡眠潜伏期和REM活动密度）等方面与正常对照有显著差异（p〈0.05或p〈0.01）;原发性失眠的PSQI多项指标（PSQI总分、睡眠效率、睡眠时间、睡眠潜伏期）方面与正常组对照差异显著（p〈0.01）。原发性失眠的PSQI和PSG在睡眠效率、实际睡眠时间、睡眠潜伏期方面存在显著差异（p〈0.01）。结论：原发性失眠患者的PSQI和PSG均存在一定程度的异常,原发性失眠患者有高估自己睡眠障碍的倾向。     

Die‐by Framing both Lengthens and Shortens Life: Further Evidence on Constructed Beliefs in Life Expectancy

Decisions regarding consumption over the lifespan require some estimate of how long that lifespan is likely to be. Payne et al. (2013) found that respondents' estimates of their own life expectancy are on average 8.6 years shorter when elicited using a die‐by frame than when elicited by a live‐to frame. If decision makers act on these life expectancies, then an arbitrary detail of framing will lead to drastically different choices. We propose that the framing effect is sensitive to the iterative probabilistic elicitation procedure employed by the previous literature. Study 1 compares the framing effect across the iterative probabilistic procedure and a point estimate procedure that simply asks respondents the age they will live to/die by. The iterative probabilistic procedure implies a life expectancy six years shorter in the die‐by frame than in the live‐to frame, replicating the results of Payne et al. (2013). With the point estimate procedure, however, the framing effect reverses: the die‐by frame increases life expectancy by three years. In Study 2, we test for the framing effect using a point estimate procedure on a representative sample of 2000 Britons. Again, and in contrast with the previous literature, we find that the die‐by frame implies longer life. Our results reinforce the previous literature that beliefs around life expectancy are constructed. We recommend caution when attempting to debias life expectancy estimates or using life expectancies in choice architecture. Copyright © 2017 John Wiley & Sons, Ltd.     

Sleep quality in healthy and mood-disordered persons predicts daily life emotional reactivity

Disordered sleep has been linked to impaired emotional functioning in healthy and depressed individuals. Little is known, however, about how chronic sleep problems influence emotional reactivity in everyday life. Participants with major or minor unipolar depressive disorder (n?=?60) and healthy controls (n?=?35) reported on sleep and emotional responses to daily life events using a computerised Experience Sampling Method. We examined whether impaired sleep quality influenced emotional reactivity to daily events, and if this relationship was altered by unipolar mood disorders. Among healthy individuals, sleep difficulties were associated with enhanced negative affect (NA) to unpleasant events and a dulled response to neutral events. However, among mood-disordered persons, sleep difficulties were associated with higher NA across all types of everyday life events. Impaired sleep quality differentially affects daily life emotional reactions as a function of depression.     

Swedish and English secondary school pupils' attitudes towards, and conceptions of, bullying: concurrent links with bully/victim involvement

Thirteen and fifteen year old Swedish and English secondary school pupils (n = 210) completed a questionnaire designed to measure attitudes towards, and conceptions of, bullying. The older participants also provided peer nominations of classmates thought to be bullies and victims. Significant differences between pupils from the two countries, between younger and older pupils, and between girls and boys emerged on a number of these variables. For example, a significantly larger percentage of English pupils than Swedish pupils indicated that name calling is bullying, whereas the reverse was true for leaving somebody out. These results suggest that findings concerning incidence of, and beliefs about, bullying may not generalise from one group of pupils to another. Overall, participants tended to express anti-bullying attitudes. The present results also add to the small but growing set of findings which suggest that pupils' attitudes concerning bullying and their actual involvement in bullying are associated concurrently. Attitudes were found to significantly predict involvement in bullying even after the variance shared with participants' sex had been controlled. Specifically, those pupils that expressed the weakest anti-bullying attitudes were found to be most often nominated by peers as a bully. The implications of these results for anti-bullying interventions were discussed.     

Sleep and Aging: Challenges and Recommendations for Middle‐Aged and Older Adults

Understanding and alleviating sleep problems for middle‐aged and older adults is addressed through discussion of the following topics: age‐related sleep changes; gender considerations; interactions among sleep, mental health, and physical illness; lifestyle and sleep; and assessment and treatment recommendations.     

Sleep experiences,dissociation, imaginal experiences,and schizotypy: The role of context

Watson (2001) reported moderate correlations between the Iowa Sleep Experience Survey (ISES) and self-report measures of dissociation and schizotypy. Subsequent investigations (Fassler, Knox, & Lynn, 2003; Watson, 2003) reported similar, although somewhat more modest, correlations between the ISES and measures of dissociation and schizotypy, as well as with measures of absorption and negative affect. The present study tested subjects in conditions in which the measures of sleep experiences were administered with other measures in either the same (N = 86) or a different (N = 87) test context. We determined that sleep experiences were associated with measures of dissociation, absorption, and schizotypy. We closely replicated Watson (2001) and found that the ISES correlations with other measures were not affected by the test context. We suggest that Watson’s (2001) hypothesized common domain of unusual cognitive and perceptual experiences (e.g., sleep experiences) may be underpinned by common ties to imaginative experiences.     

Effect of Sex and Joystick Experience on Pursuit Tracking in Adults

Using a joystick, adults (n = 39 males, 40 females in Experiment 1; n = 35 males, 40 females in Experiment 2; and n = 18 males, 18 females in Experiment 3) performed a computerized pursuit tracking task. Contrary to previously reported findings, the males were not more accurate than the females when performance was adjusted for prior perceptual-motor experience. Although no sex differences were found in a speeded tracking task, in an inverted tracking task the males exhibited a significant performance advantage; that advantage remained after several blocks of practice. Because participants' performance was adjusted statistically for prior perceptual-motor experience, the male advantage in inverted tracking was not related to experience. Rather, more proficient inverted tracking performance was associated with higher 3-dimensional mental rotations scores. In sum, sex differences in normal pursuit tracking may be better explained by differences in perceptual-motor experience. Inverted tracking, however, may depend on proficiency with spatial transformations.     

The Effects of Intimacy and Target Sex on Direct Aggression: Further Evidence

The effects on aggression of target sex and relationship with the target were investigated using self‐report data. One hundred and seventy‐four participants (115 female) reported on acts of direct aggression in the last 2 years toward intimate partners, known and unknown same‐sex targets, and known and unknown opposite‐sex targets. Women's self‐reported aggression was higher toward partners than other targets, replicating previous findings regarding women's intimate partner aggression. Women's aggression was consistently higher toward same‐sex than opposite‐sex targets, but the effect of knowing the target was inconsistent. Men's self‐reported aggression was more frequent toward same‐sex than opposite‐sex targets—including intimate partners—and more frequent toward known than unknown targets. Results are discussed with reference to a partner‐specific reduction in women's fear, and sex differences in threshold for classifying someone as “known well.” Limitations of the present sample and suggestions for future work are discussed. Aggr. Behav. 38:272‐280, 2012. © 2012 Wiley Periodicals, Inc.     

Sex differences in genetic and environmental effects on aggression

The aim of the present study was to investigate the genetic and environmental factors influencing teacher and parental rated aggression in boys and girls, asking whether the magnitude of these effects is similar across rater and sex. The study is part of an ongoing nationwide twin‐family study of behavioral development and health habits carried out in Finland. The sample consisted of 1651 twin pairs (264 monozygotic male, 300 monozygotic female, 292 dizygotic male, 278 dizygotic female, and 517 dizygotic opposite‐sex twin pairs), representing subsets of five 11‐ to 12‐year‐old twin cohorts (b. 1983–1987). The data were collected using the teacher and parental rating forms of the Multidimensional Peer Nomination Inventory. Structural equation models of sex‐limitation assessed sex differences in genetic and environmental influences on aggression. The results suggested significant genetic, common environmental, and specific environmental effects on aggression in both boys and girls, but the best fitting model differed depending on the informant. For both ratings, boys showed lower levels of heritability and higher levels of common environment than girls. In addition, the teacher rating data also suggested the presence of either sex‐specific common environmental effects or sex‐specific genetic effects. Support is provided also for sibling contrast effects, either at the behavioral level or as a rater bias. Aggr. Behav. 29:55–68, 2003. © 2003 Wiley‐Liss, Inc.     

Patient Responsiveness to a Sleep and Circadian Intervention in a Sample of Adults With Serious Mental Illness

Understanding patient responsiveness, a component of fidelity, is essential as it impacts treatment outcome and ongoing use of treatment elements. This study evaluated patient responsiveness—operationalized as receptivity to treatment modules and ratings of the usefulness and the utilization of treatment elements—to the Transdiagnostic Intervention for Sleep and Circadian Dysfunction (TranS-C) in a sample of adults with serious mental illness (SMI) and sleep/circadian dysfunction. Adults with SMI and sleep/circadian dysfunction (N = 104) received TranS-C in a community mental health setting. Independent raters rated TranS-C sessions to assess receptivity. At posttreatment and 6-month follow-up, participants completed a usefulness scale, utilization scale, the PROMIS Sleep Disturbance (PROMIS-SD) and Sleep-Related Impairment (PROMIS-SRI) scales, DSM-5 Cross-Cutting Measure (DSM-5-CC), and Sheehan Disability Scale (SDS). Receptivity was rated as somewhat to fully understood, and predicted a reduction on the DSM-5-CC. On average, participants rated TranS-C as moderately useful and utilized treatment elements occasionally. Ratings of usefulness were associated with the PROMIS-SD, PROMIS-SRI, and DSM-5-CC at posttreatment, but not with the SDS. Ratings of utilization were not associated with outcome. The findings add to the literature on patient responsiveness, an implementation outcome, and provide data on the utility of TranS-C within a community mental health setting.     

Understanding and management of epilepsy in a rural community in South Africa: An exploratory study

The aim of the study was to explore how people living with epilepsy in an indigenous rural South African community understood and managed their epilepsy. Six people with epilepsy were informants (male = 3, female = 3; age range = 16 to 58 years, unemployed = 5, learner = 1). They completed individual interviews on their meanings of epilepsy and also on their experiences managing the illness. The results indicated that the participants’ understanding of epilepsy is closely linked to their own experiences of the condition, as well as to cultural beliefs about seizure disorder. Moreover, they reported that the unpredictability associated with a seizure generated a greater level of distress to the participants than the fact that they had seizure disorder. The participants reported to rely on family, and both traditional and Western medicine to manage their epilepsy.     

Sex differences in estimating multiple intelligences in self and others: A replication in Russia

This was a crosscultural study that focused on sex differences in self‐ and other‐estimates of multiple intelligences (including 10 that were specified by Gardner, 1999 and three by Sternberg, 1988) as well as in an overall general intelligence estimate. It was one of a programmatic series of studies done in over 30 countries that has demonstrated the female “humility” and male “hubris” effect in self‐estimated and other‐estimated intelligence. Two hundred and thirty Russian university students estimated their own and their parents’ overall intelligence and “multiple intelligences.” Results revealed no sex difference in estimates of overall intelligence for both self and parents, but men rated themselves higher on spatial intelligence. This contradicted many previous findings in the area which have shown that men rate their own overall intelligence and mathematical intelligence significantly higher than do women. Regressions indicated that estimates of verbal, logical, and spatial intelligences were the best predictors of estimates of overall intelligence, which is a consistent finding over many studies. Regressions also showed that participants’ openness to experience and self‐respect were good predictors of intelligence estimates. A comparison with a British sample showed that Russians gave higher mother estimates, and were less likely to believe that IQ tests measure intelligence. Results were discussed in relation to the influence of gender role stereotypes on lay conception of intelligence across cultures.     

大学生压力和睡眠质量：反刍思维和心理韧性的链式中介作用

采用大学生压力量表、反刍思维量表、青少年心理韧性量表和匹兹堡睡眠指数量表调查684位大学生(被试平均年龄为20.26岁;SD = 1.08),探讨反刍思维和心理韧性在压力和睡眠质量之间的链式中介作用。结果表明：(1)压力对睡眠质量有显著的负向预测作用;(2)压力可通过反刍思维和心理韧性的独立中介作用及反刍思维和心理韧性的链式中介作用间接预测睡眠质量。本研究揭示了压力和睡眠质量的关系及作用机制,深化了大学生压力对睡眠质量影响的研究。     

Behavioral Effects of Chronic Melatonin and Pregnenolone Injections in a Myelin Mutant Rat (taiep)

The taiep (tremor, ataxia, immobility, epilepsy, and paralysis) myelin mutant displays a number of locomotor deficits. Taiep rat gait is characterized by shorter stride and step lengths as well as by larger stride widths. Thirty-day-old taiep mutants were placed under a regimen of daily hormone injections for 60 days. Animals in Condition 1 received melatonin, those in Condition 2 received pregnenolone sulfate, and those in a third control condition received injections of saline. Following the injections, each taiep mutant's gait was analyzed. The animals that received melatonin and pregnenolone displayed significantly larger stride and step lengths than did the controls. In addition, the animals that received hormones displayed shorter stride widths than did the controls. These experimental effects are consistent with a normalization of gait. Possible cellular mechanisms of this behavioral effect are discussed.     

Effects of losing and testosterone upon subsequent behavior in male and female S3 (Tryon Maze Dull) rats

Attempts were made to determine whether modification of agonistic behavior by experience differs in the sexes and if so, whether testosterone is involved in this response. Gonadectomized male and female CPB-S3 (Tryon Maze Dull) rats were treated with testosterone propionate (TP, 250 μg) or vehicle and subjected to tests in which they became either winners or losers. S3 males and females were tested against Long Evans rats to become losers or against Wistar rats to become winners. Subsequently, S3 winners were tested against losers. In addition, winners and losers were tested against naive S3 opponents of the same sex. After varied agonistic experiences, all animals were tested for social preference in a situation in which they could choose between their respective opponents without the possibility of social interaction. Thereafter, they were also exposed to a two-choice passive avoidance learning procedure to see if the behavioral effects of aggressive interactions generalized to nonsocial learning. Males and females reacted differently to winning or losing, the presence of testosterone being a critical factor in the manifestation of this sex difference. Relatively permanent effects on aggressive and other behaviors were only established in TP-treated males. Losing experiences in the social-preference test generally led to a slight preference for naive, less aggressive animals. Testosterone-treated male losers, the group expected to be most vulnerable to generalized inhibition and impairment of learning, did not differ from other categories in the two-choice passive avoidance procedure, although marked differences were observed between the sexes and between testosterone and oil-treated animals.     

Cross-Sectional versus Longitudinal Age Gradients of Tower of Hanoi Performance: The Role of Practice Effects and Cohort Differences in Education

ABSTRACT

We examined 5-year longitudinal changes in Tower of Hanoi (TOH) performance in a population-based sample of adults (35–85 years initially; n?=?1480). An age-matched sample (n?=?433) was included to estimate practice effects. The longitudinal age gradients differed substantially from the cross-sectional age gradients. This was the case even when practice effects, that were substantial in magnitude across the young/middle-aged groups, were controlled for. Instead of a continuous age-related deficit in performance from 35 and onwards, longitudinal data showed slowing of performance and increases of illegal moves past age 65. Cohort-related differences in educational attainment did not account for this discrepancy. Further analyses revealed a positive relation between practice-related gains and explicit memory of having performed the task at the first test occasion and a positive association between latent changes in TOH and Block Design, in line with cross-sectional findings. In conclusion, the results demonstrate a pattern of age-related changes indicating a late-onset decline of TOH performance and underscore the need to control for retest effects in longitudinal aging research.     

Biomechanical Study of Tandem Stance in Healthy Young Adults: Effects of Weight-Bearing and Limb Dominance

Postural strategies of healthy young adults to control tandem stance were investigated through the calculation of the relative contribution of the two loading-unloading (LU) and pressure-distribution (PD) mechanisms and the two legs for controlling the resultant center-of-pressure (CP_Res) displacements. Weight-bearing asymmetry and limb dominance were also studied. For antero-posterior and medio-lateral CP_Res displacements, LU and PD mechanisms mainly contribute, respectively. A significant LU contribution is nonetheless observed for medio-lateral control, due to a lateral gap between the CP positions under each foot despite a strict sagittal alignment for the two feet. Moreover, for medio-lateral control, the respective involvement of the two legs is related to the level of weight-bearing asymmetry, whereas the front leg mainly controls the antero-posterior sway. By specifying potential effects of body-weight asymmetry and limb dominance, to a better testing of patients with deficiencies in lateral sway control.