同伴常规压力、直接压力与青少年抽烟、饮酒行为的关系

随机从小六、初二、高一选择有效被试８２８名,检验同伴对抽烟和饮酒的常规压力、直接压力及其与青少年抽烟、饮酒行为的关系。研究使用纸笔测验,团体施测的方法测查了被试抽烟、饮酒的累计次数,同伴对抽烟、饮酒的常规压力和直接压力,其ＣｒｏｎｂａｃｈＡｌｐｈａ值分别为０．８６１５,０．８２１２和０．９５００。结果表明：①在抽烟和饮酒之间,同伴常规压力、直接压力存在明显差异;同伴常规压力、直接压力与青少年抽烟、饮酒次数有显著相关;②同伴常规压力、直接压力存在明显的性别差异;对男生抽烟、饮酒次数的影响超过女生;③同伴常规压力、直接压力存在明显的年级差异;对初二学生抽烟、饮酒次数的影响超过其他两个年级的学生。     

Behavior analysis and the search for the origins of hypertension.

Hypertension is a disorder of sodium regulation that develops over time in a context of the interactions of the individual with the environment. Experimental hypertension can be induced in laboratory animals and normotensive humans via increases in sodium intake under conditions of aversive behavioral control. Readiness for avoidance contingencies includes a breathing pattern characterized by subnormal rate and normal tidal volume. Studies with humans have shown that this inhibitory breathing pattern is associated with increased plasma acidity, increased renal sodium reabsorption, increased secretion of digitalis-like hormones that inhibit sodium-pump activity, and increased vasoconstriction and blood pressure. Behavioral research is needed that defines the necessary and sufficient conditions for inhibitory breathing and its role in the development of hypertension.     

Stability of visceral behavior in the awake rat during rest.

Brady and colleagues have championed the importance of careful delineation and control of a subject's behavioral state. In this paper we develop the concept of visceral behavior from a physiological perspective. Sprague-Dawley rats were instrumented to record arterial blood pressure, renal sympathetic nerve activity, and respiration. The rats were restrained in a conical cloth sock. Rats that were well adapted to the sock restraint showed a regular respiratory pattern and consistent pressure recordings; they rested quietly in the sock and moved only occasionally to adjust their position. Fourier analysis of blood pressure and nerve activity showed a concentration of power below 1 Hz. The coherence between the two signals was strong (0.83 +/- 0.03) at 0.42 Hz. Conversely, during their initial adjustment to the sock restraint, the rats tended to show large fluctuations in blood pressure associated with episodic apneic breathing; 1 animal displayed this pattern of visceral behavior throughout most of the experiment. Despite this instability in pressure, the rats' overt behavior was stable: They rested quietly in the sock with only occasional position shifts. Spectral analysis and coherence computations showed large shifts in the distribution of power and frequency range over which arterial pressure and sympathetic activity were tightly coupled. These data are consistent with the view that an animal's circulatory adjustments, as well as adjustments in other aspects of its physiological state, constitute an important aspect of behavior, and that this behavior can influence the interpretation of biobehavioral data.     

中学生学习主观幸福感及其影响因素的初步研究

以910名从初一到高三的中学生为被试,采用自编的《中学生学习主观幸福感量表》进行研究。结果表明:(1)中学生学习主观幸福感普遍偏低,且存在学校类型、年级的差异,非重点学校学生学习主观幸福感更低;高二、初二学生学习主观幸福感最低。(2)影响中学生学习主观幸福感的直接因素是学习体验和现有学习成绩,其中,前者作用更大。(3)影响中学生学习主观幸福感的间接因素是社会压力和希望学习成绩,它们通过学习体验或现有学习成绩间接作用于学习主观幸福感。     

Does learning a skill with the expectation of teaching it impair the skill’s execution under psychological pressure if the skill is learned with analogy instructions?

ObjectiveHaving learners practice a motor skill with the expectation of teaching it (versus an expectation of being tested on it) has been revealed to enhance skill learning. However, this improvement in skill performance is lost when the skill must be performed under psychological pressure due to ‘choking under pressure.’ The present study investigated whether this choking effect is caused by an accrual of declarative knowledge during skill practice and could be prevented if a technique (analogy instructions) to minimize the accrual of declarative knowledge during practice is employed.DesignWe used a 2 (Expectation: teach/test) x 2 (Instructions: analogy/explicit) x 2 (Posttest: low-pressure/high-pressure) mixed-factor design, with repeated measures on the last factor.MethodsOne-hundred fifty-six participants were quasi-randomly assigned (based on sex) to one of four groups. Participants in the teach/analogy and teach/explicit groups practiced golf putting with the expectation of teaching putting to another participant, and analogy instructions or explicit instructions, respectively. Participants in the test/analogy and test/explicit groups practiced golf putting with the expectation of being tested on their putting, and analogy instructions or explicit instructions, respectively. The next day all participants completed low- and high-pressure putting posttests, with their putting accuracy serving as the dependent variable.ResultsWe observed an Expectation x Instructions × Posttest interaction, such that a main effect of expectation was found in the low-pressure posttest, with the teach group exhibiting superior accuracy, and an Expectation × Instructions interaction was revealed for the high-pressure posttest. This interaction resulted from the teach group showing greater accuracy than the test group exclusively when receiving analogy instructions.ConclusionResults show that participants who practiced with the expectation of teaching exhibited superior learning and indicate that they choked under pressure likely due to their accrual of declarative knowledge during practice, since the choking effect was prevented by having them practice with analogy instructions. Accordingly, having learners practice with the expectation of teaching and techniques that minimize the accrual of declarative knowledge is recommended.     

Anger and denial as predictors of cardiovascular reactivity in women

The relationship between behavioral and physiological reactivity and cardiovascular disease has been extensively researched in men, indicating that the expression of anger may be a contributory factor in the development of coronary heart disease. Few studies, however, have focused on women. Among these, women generally have been found to be less reactive to laboratory tasks than men. In the present study, 45 women aged 19–21 years were selected to represent three groups—(1) low anger/low denial, (2) high anger/low denial, and (3) low anger/high denial—based on their scores on the State-Trait Anger Expression Inventory and the Marlowe-Crowne Social Desirability Scale. Subjects received three conditions: (1) no feedback, (2) error feedback without observer present, and (3) error feedback with observer present. As hypothesized, women who reported a high level of denial and low anger exhibited elevated stress-related reactivity. The results are suggestive of a subgroup of highly reactive women not previously identified within the literature. The hypothesis that all groups would display greater reactivity in a condition providing error feedback with observation was not supported.This study was supported by a research grant to Carol S. Emerson from the Women's Research Institute of Virginia.     

Associations Between Peer Pressure and Adolescents’ Binge Behaviors: The Role of Basic Needs and Coping

Framed from a framework based on the integration of self-determination theory (Ryan &; Deci, 2000 Ryan, R. M., &; Deci, E. L. (2000). Self-determination theory and the facilitation of intrinsic motivation, social development, and well-being. American Psychologist, 55(1), 68–78. doi:10.1037/0003-066X.55.1.68[Crossref], [PubMed], [Web of Science ®] , [Google Scholar]) and Endler and Parker’s (1990) conception of coping strategies, the authors analyzed the relationships between peer pressure and binge behaviors (binge eating and binge drinking) in adolescence. Moreover, the authors explored the mediating role of satisfaction/frustration of basic psychological needs and coping strategies in these associations. Participants were 570 high school students (M?=?15.75 years, SD?=?1.14 years) living in Italy. The study design was cross-sectional and adolescents were administered self-report questionnaires. Path analysis showed significant and positive direct associations of peer pressure with both binge eating and binge drinking. Moreover, findings show that there is an indirect path in which peer pressure is positively associated with need frustration that is related to the use of emotion-oriented coping strategies that, on their turn, are associated with binge eating. Differently, binge drinking seems to be only directly related to peer pressure. The authors put light to the complex nature of the relationships between peer pressure and binge behaviors in adolescence, taking into account the separate contribution of need satisfaction and need frustration, as well as of coping strategies. Finally, practical implications of the study are discussed.     

Does a prosocial attitude reduce risky driving behaviour under time pressure?

Time pressure could make drivers exhibit more risky driving behaviour. Attitudes can influence people’s behaviours, but few studies have explored the influence of prosocial attitudes on driving behaviour. The purpose of this study was to explore the influence of prosocial attitudes on driving behaviour under time pressure. A 2 (high/low prosocial attitude) *2 (present/no time pressure) mixed design was used to investigate the interaction between prosocial attitude and time pressure on driving behaviour. Prosocial attitudes and time pressure have a significant main effect on driving behaviour. Drivers with high prosocial attitudes made lane changes at a greater distance from pedestrians and decelerated to a greater degree than drivers with low prosocial attitudes when interacting with pedestrians. Under time pressure, people drive faster and accelerate more quickly. Specifically, we found an interaction between time pressure and prosocial attitudes on driving behaviour. Drivers with low prosocial attitudes showed higher speeds than drivers with high prosocial attitudes under the time pressure scenario on foggy roads. The results showed that high prosocial attitudes lead to friendly interactions with pedestrians and careful driving in specific situations, even under time pressure. The present study not only expands the research on driving behaviour and attitude but can also provide some data support and guidance for driver selection and training.     

子女数量与育龄母亲生活满意度的链式中介模型

为探讨子女数量与育龄母亲生活满意度之间的关系,以及教养压力和心理韧性在其中的中介作用,本研究采用教养压力问卷、心理韧性量表以及生活满意度问卷对490名小学生的母亲进行测量。结果表明：（1）子女数量与教养压力存在正相关,教养压力与心理韧性、生活满意度呈负相关,心理韧性与生活满意度正相关;（2）子女数量到育龄母亲生活满意度直接效应不显著,教养压力的独立中介效应与教养压力-心理韧性的链式中介效应显著。研究揭示了子女数量与育龄母亲的生活满意度的关系及其作用机制。     

餐后低血压的原发高血压患者24h动态血压特点

为了分析餐后低血压（PPH）患者的24h 动态血压变化特点,选择150例原发性高血压患者进行24h 动态血压监测,分成 PPH 组（n＝85）和非 PPH（n＝65）。观察两组平均血压、血压负荷值、晨峰值、血压变异性等指标。结果显示,（1） PPH 组年龄明显高于非 PPH 组（P＜0．05）;（2）PPH 组患者24h 及日间、夜间平均收缩压及平均收缩压负荷高于非PPH 组（P＜0．05）,但舒张压无统计学差异（P＞0．05）;（3） PPH 组患者血压变异性明显高于非 PPH 组（P ＜0．05）;（4） PPH 组患者血压晨峰数值及晨峰发生率明显高于非 PPH 组（P＜0．05）;（5） PPH 组夜间血压下降率及非勺型率较非 PPH 组无统计学差异（P＞0．05）。因此,PPH 患者易发生于高龄患者,且具有收缩压、血压变异性增高,更易发生晨峰现象的特点。