中学生学习主观幸福感的影响因素及其教育建议

学习主观幸福感对中学生整体生活的满意程度和心理健康有着重要的影响。本文分析了影响中学生学习主观幸福感的主要因素：学习体验、归因倾向、学习成绩、自我效能感及社会支持,并在此基础上提出了针对学校、教师及家庭的教育建议。     

Ignition’s glow: Ultra-fast spread of global cortical activity accompanying local “ignitions” in visual cortex during conscious visual perception

Despite extensive research, the spatiotemporal span of neuronal activations associated with the emergence of a conscious percept is still debated. The debate can be formulated in the context of local vs. global models, emphasizing local activity in visual cortex vs. a global fronto-parietal “workspace” as the key mechanisms of conscious visual perception. These alternative models lead to differential predictions with regard to the precise magnitude, timing and anatomical spread of neuronal activity during conscious perception. Here we aimed to test a specific aspect of these predictions in which local and global models appear to differ – namely the extent to which fronto-parietal regions modulate their activity during task performance under similar perceptual states. So far the main experimental results relevant to this debate have been obtained from non-invasive methods and led to conflicting interpretations. Here we examined these alternative predictions through large-scale intracranial measurements (Electrocorticogram – ECoG) in 43 patients and 4445 recording sites. Both ERP and broadband high frequency (50–150 Hz – BHF) responses were examined through the entire cortex during a simple 1-back visual recognition memory task. Our results reveal short latency intense visual responses, localized first in early visual cortex followed (at ∼200 ms) by higher order visual areas, but failed to show significant delayed (300 ms) visual activations. By contrast, oddball image repeat events, linked to overt motor responses, were associated with a significant increase in a delayed (300 ms) peak of BHF power in fronto-parietal cortex. Comparing BHF responses with ERP revealed an additional peak in the ERP response – having a similar latency to the well-studied P3 scalp EEG response. Posterior and temporal regions demonstrated robust visual category selectivity. An unexpected observation was that high-order visual cortex responses were essentially concurrent (at ∼200 ms) with an ultra-fast spread of signals of lower magnitude that invaded selected sites throughout fronto-parietal cortical areas. Our results are compatible with local models in demonstrating a clear task-dependence of the 300 ms fronto-parietal activation. However, they also reveal a more global component of low-magnitude and poor content selectivity that rapidly spreads into fronto-parietal sites. The precise functional role of this global “glow” remains to be elucidated.     

初中生心理顽强性与主观幸福感的相关研究

目的探讨初中生心理顽强性与主观幸福感之间的相关性。方法采用自制心理顽强性量表和中学生牛津幸福感问卷,对调查结果进行T检验、方差分析、典型相关分析。结果①初中生心理顽强性存在性别差异,年级差异。②初中生主观幸福感的性别差异整体不显著,但女生的情绪体验得分要显著高于男生,同时还存在在年级差异。③初中生的责任感和自控感越高,就有越正向的自我感知和情绪体验。结论：心理顽强性与主观幸福感之间存在显著正相关。     

Factor Structure of the Parenting Scale in a Low-Income African American Sample

We evaluated the relative goodness-of-fit of two factor structures of the Parenting Scale (Arnold, O'Leary, Wolf, {&} Acker, 1993) among two samples of low-income African American families. Participants included 271 mother-child dyads from urban and rural areas in the southern and southeastern US, who completed the Parenting Scale along with other measures of parenting style and dyadic relationship. Confirmatory Factor Analyses (CFA) indicated that a two-factor solution, comprising Laxness and Overreactivity dimensions, was the better fit to the data. Some direct evidence for convergent validity was provided by a correlation between the Laxness factor of the Parenting Scale and the Firm/Lax Control subscale of the Children's Report of Parenting Behavior Inventory (CRPBI). Results are discussed in term of Brody and Flor's (1998) “no nonsense” parenting style.     

Context affects the interpretation of low but not high numerical probabilities: A hypothesis testing account of subjective probability

Low numerical probabilities tend to be directionally ambiguous, meaning they can be interpreted either positively, suggesting the occurrence of the target event, or negatively, suggesting its non-occurrence. High numerical probabilities, however, are typically interpreted positively. We argue that the greater directional ambiguity of low numerical probabilities may make them more susceptible than high probabilities to contextual influences. Results from five experiments supported this premise, with perceived base rate affecting the interpretation of an event’s numerical posterior probability more when it was low than high. The effect is consistent with a confirmatory hypothesis testing process, with the relevant perceived base rate suggesting the directional hypothesis which people then test in a confirmatory manner.     

Crewmember performance before, during, and after spaceflight

The development of technologies for monitoring the welfare of crewmembers is a critical requirement for extended spaceflight. Behavior analytic methodologies provide a framework for studying the performance of individuals and groups, and brief computerized tests have been used successfully to examine the impairing effects of sleep, drug, and nutrition manipulations on human behavior. The purpose of the present study was to evaluate the feasibility and sensitivity of repeated performance testing during spaceflight. Four National Aeronautics and Space Administration crewmembers were trained to complete computerized questionnaires and performance tasks at repeated regular intervals before and after a 10-day shuttle mission and at times that interfered minimally with other mission activities during spaceflight. Two types of performance, Digit-Symbol Substitution trial completion rates and response times during the most complex Number Recognition trials, were altered slightly during spaceflight. All other dimensions of the performance tasks remained essentially unchanged over the course of the study. Verbal ratings of Fatigue increased slightly during spaceflight and decreased during the postflight test sessions. Arousal ratings increased during spaceflight and decreased postflight. No other consistent changes in rating-scale measures were observed over the course of the study. Crewmembers completed all mission requirements in an efficient manner with no indication of clinically significant behavioral impairment during the 10-day spaceflight. These results support the feasibility and utility of computerized task performances and questionnaire rating scales for repeated measurement of behavior during spaceflight.     

Surprises: low probabilities or high contrasts?

Outcome expectations can be expressed prospectively in terms of probability estimates, and retrospectively in terms of surprise. Surprise ratings and probability estimates differ, however, in some important ways. Surprises are generally created by low-probability outcomes, yet, as shown by several experiments, not all low-probability outcomes are equally surprising. To account for surprise, we propose a contrast hypothesis according to which the level of surprise associated with an outcome is mainly determined by the extent to which it contrasts with the default, expected alternative. Three ways by which contrasts can be established are explored: contrasts due to relative probabilities, where the obtained outcome is less likely than a default alternative; contrasts formed by novelty and change, where a contrast exists between the obtained outcome and the individual's previous experience; and contrasts due to the perceptual or conceptual distance between the expected and the obtained. In all these cases, greater contrast was accompanied by higher ratings of surprise.     

儿童自我控制学生自陈表的编制

本研究的目的是制定一套测量儿童自我控制能力的自陈式量表,在认知、行为、情绪、社会交往四个主要范畴内编定题目,经过项目分析、因素分析,认为测量儿童自我控制能力的量表包含学习行为、情绪、耐受性和独立性以及生活习惯四个方面的内容,还进一步分析了儿童自我控制的年级差异和性别差异,本量表的信度、效度都较好。