儿童情绪表情识别的眼睛线索之发展研究

眼睛是人类识别和表达心理状态的重要脸部部位之一。本研究的目的在于考察较小的儿童能否把眼睛部位作为识别情绪表情的重要线索。共159名幼儿园和小学低年级的儿童,完成整个脸部．单独眼睛和单独嘴巴部位的情绪表情识别任务。结果发现较小的儿童通过眼睛线索识别情绪表情与通过脸部识别情绪表情的成绩同样好。最后从眼睛在心理状态识别中作用的角度进行了讨论。     

Personality and reciprocal inhibition theory: The link between aggression and sexual reactivity

The study tries to relate two approaches often discussed in the context of aggression and violence in combination with sexual arousal, the reciprocal inhibition theory (Wolpe, 1958) and an approach from personality psychology which emphasizes the psychoticism dimension (P) according to Eysenck and Eysenck (1975) as a mediator of violent sexual offence. The effects of preexposure to a violent vs. neutral movie on sexual reactivity to violent and non-violent sexual stimuli (audioplays and pictures) was studied in a male student population (N=64). Sexual reactivity was measured by self-ratings, inspection time and electrodermal activity. Results could not confirm reciprocal inhibition theory but revealed that sexual reactivity for subjects scoring high vs. low on the psychoticism/aggressiveness dimension were differently affected by preexposure to violence.     

Cue abstraction and ideal prototype abstraction in estimation tasks

This study investigates abstracted processes and introduces a new prototype abstraction model adapted to estimation tasks. This prototype abstraction model assumes that the processing of whole exemplar patterns supports the detection of the underlying statistics necessary for the abstraction of two extreme prototypes on the continuous criterion dimension of the task. The prototypes are stored in memory as valid reference points for future similarity-based judgments. This prototype model was compared with the cue abstraction model, which assumes that people abstract cue weights in learning and add the cue information from exemplars to infer their criterion values varying on the continuous dimension. This study hypothesises that the training mode and the number of exemplars in training interact and affect subsequent model performance at test. The results from an experiment confirmed this hypothesis and showed that observational training supports an efficient prototype abstraction and feedback training supports an efficient cue abstraction.     

Interspecific aggressiveness and reactivity in mouse-killing and nonkilling rats: Compared effects of olfactory bulb removal and raphe lesions

The experiments aimed at uncovering possible correlations between inter-specific aggressiveness and general and emotional responsiveness (appraised by means of the open-field technique) in the rat. Killer rats showed a higher level of emotional responsiveness than nonkillers. Removal of the olfactory bulbs induced an increased reactivity both in the rats which were converted into killers in those whose behavior toward mice remained unchanged. Destruction of the dorsal and medial nuclei of the raphé induced a clear hyperreactivity in most lesioned animals, but provoked initiation of mouse-killing behavior in only one-third. When produced in rats which had remained nonkillers following olfactory bulb removal, the raphé lesion clearly enhanced both the general and the emotional responsiveness; it provoked initiation of mouse-killing behavior in about 75% of the lesioned animals. The discussion bears on the correlations between interspecific aggressiveness and experimentally induced hyperreactivity in the rat.     

Motivated but not engaged: The implicit achievement motive requires difficult or unclear task difficulty conditions to exert an impact on effort

Integrating the achievement motive literature and motivational intensity theory, we expected the implicit achievement motive (nAch) to directly determine effort mobilization when task difficulty is unclear. However, nAch should interact with task difficulty in determining effort mobilization when task difficulty is clear. Participants worked on an easy versus difficult memory task (Study 1) or a clear versus unclear arithmetic task (Study 2). We used the Picture-Story-Exercise to assess nAch and pre-ejection period (PEP) to operationalize effort. As predicted, PEP reactivity was strong in the difficult-high-nAch condition and in the unclear-high-nAch condition but low in the other three conditions. Supporting motivational intensity theory, our results showed that nAch requires difficult or unclear task conditions to exert a noticeable impact on effort.     

Taking Racism to Heart: Race-Related Stressors and Cardiovascular Reactivity for Multiracial People

Multiracial people experience an accumulation of racial stress for both their minority and their multiracial identities, yet no research has examined the physiological impact of this stress. This within-groups experimental study examined whether two race-related stressors—identity invalidation and discrimination from family—affect cardiovascular reactivity for Black/White multiracial adults (N = 60). The authors found a Condition × Phase interaction effect indicating that discrimination from family affected blood pressure. Invalidation had no effect on blood pressure. Las personas multirraciales experimentan una acumulación de estrés racial tanto a causa de su identidad multirracial como de su identidad como minoría, pero no hay investigaciones que hayan examinado el impacto psicológico de este estrés. Este estudio experimental dentro de grupos examinó si dos factores causantes de estrés relacionados con la raza (la invalidación de la identidad y la discriminación por parte de la familia) afectan a la reactividad cardiovascular de personas adultas multirraciales blancas/negras (N = 60). Los autores hallaron un efecto de interacción Condición × Fase que indica que la discriminación por parte de la familia tuvo un efecto sobre la presión sanguínea. La invalidación no tuvo efecto sobre la presión sanguínea.     

Cumulative trauma,emotion reactivity and salivary cytokine levels following acute stress in healthy women

Background and Objectives: To better understand how trauma leads to poor health, this study examined whether cumulative trauma and emotion reactivity contribute to pro- (IL-1β) and anti-inflammatory (IL-10) salivary cytokine levels after stress.

Design: Seventy-three women, screened to be physically and mentally healthy, completed an acute stress paradigm and measures of lifetime trauma exposure.

Method: Saliva was collected 10?min before (i.e., baseline) and 35?min after the onset of a 10-min stressor. State negative and positive emotion were measured at baseline and post-stress.

Results: Most participants reported exposure to at least one trauma, with a mean of five. Cumulative trauma was associated with higher post-stress IL-1β and IL-1β/IL-10, but not with IL-10 or changes in emotion. Declines in positive emotion correlated with greater post-stress IL-1β.

Conclusions: These findings suggest that both cumulative trauma exposure and positive emotion have implications for salivary cytokine responses to acute stress. The inclusion of healthy women strengthens internal validity, and increases confidence that observed associations between trauma and salivary cytokine responses can be attributed to trauma, rather than to confounding health problems. This study adds to the growing literature examining how trauma may connect to cytokines, and ultimately, poor health.     

Experimental manipulations of social status and stress-induced cardiovascular responses in high and low trait dominant men

The present study investigated the effect of a mismatch between trait dominance and induced status on cardiovascular reactivity to and recovery from a dyadic interaction task. Eighty normotensive men characterized as either high or low in trait dominance engaged in a discussion requiring persuasive behavior either in the context of a high or low induced status position. The outcome of a rigged competition was used as a marker of status. Induced status was found to moderate cardiovascular recovery of dominance groups. High dominant individuals exhibited less complete recovery of diastolic blood pressure (DBP) when placed in a low compared to high status position, whereas recovery of low dominant individuals tended to show greater impairment in a high status position. Results for changes in emotional states also indicate a detrimental effect of incongruous status positions, particularly for high dominant individuals. Subjective experiences did not mediate cardiovascular effects, though.     

Opening the cuebox: The information children and young adults generate and rely on when making inferences from memory

We used a cue‐generation and a cue‐selection paradigm to investigate the cues children (9‐ to 12‐year‐olds) and young adults (17‐year‐olds) generate and select for a range of inferences from memory. We found that children generated more cues than young adults, who, when asked why they did not generate some particular cues, responded that they did not consider them relevant for the task at hand. On average, the cues generated by children were more perceptual but as informative as the cues generated by young adults. When asked to select the most informative of two cues, both children and young adults tended to choose a hidden (i.e., not perceptual) cue. Our results suggest a developmental change in the cuebox (i.e., the set of cues used to make inferences from memory): New cues are added to the cuebox as more cues are learned, and some old, perceptual cues, although informative, are replaced with hidden cues, which, by both children and young adults, are generally assumed to be more informative than perceptual cues.     

Autobiographical memory characteristics in depression vulnerability: Formerly depressed individuals recall less vivid positive memories

The differential activation hypothesis (DAH; Teasdale, 1988) proposes that individuals who are vulnerable to depression can be distinguished from non-vulnerable individuals by the degree to which negative thoughts and maladaptive cognitive processes are activated during sad mood. While retrieval of negative autobiographical memories is noted as one such process, the model does not articulate a role for deficits in recalling positive memories. Two studies were conducted to compare the autobiographical memory characteristics of never-depressed and formerly depressed individuals following a sad mood induction. In Study 1, features of negative memories of never-depressed and formerly depressed individuals did not differ, either in neutral or sad mood. For positive memories, groups did not differ in neutral mood, but following a sad mood induction, formerly depressed individuals rated their positive memories as less vivid than their never-depressed counterparts. Study 2 examined positive autobiographical memory features more comprehensively and replicated the finding that in a sad mood formerly depressed individuals recalled less vivid positive memories than never-depressed controls. These findings suggest that the phenomenological features of positive memories could represent an important factor in depressive vulnerability, and, more broadly, that depression may be associated with a deficit in the processing of positive material.