概化理论方差分量及其变异量估计:跨分布的模拟研究

为考察概化理论中方差分量及其变异量估计的准确性,采用模拟研究的方法,探究Traditional法、Jackknife法、Bootstrap法和MCMC法在p×i×h和p×(i:h)2种双侧面设计和正态、二项、多项、偏态分布4种数据类型下的表现。结果显示:(1)4种方法均能准确估计方差分量;(2)估计方差分量的标准误时,若数据正态分布,Traditional法最优,非正态分布时Bootstrap法最优;(3)估计方差分量的90%置信区间时,Bootstrap法在不同分布的数据下表现稳定,但容易受到侧面水平数的影响。综合来说,若数据呈正态分布,建议选用Traditional法; 若数据呈非正态分布,建议选用Bootstrap法。     

部件启动范式下可成字部件的位置效应

可成字部件在汉字中的位置和功能多种多样。实验1采用部件启动范式考察在汉字识别中可成字部件在不同位置的功能。启动刺激为处于三种位置(主要义符位置、次要义符位置、声符位置)的可成字部件, 目标刺激为包含这三种位置可成字部件的汉字, 要求被试对目标字做词汇判断。实验2结合部件启动范式和视觉搜寻范式探查可成字部件在不同位置的功能。结果表明：(1)可成字部件处在声符位置时的启动效应强于处在义符位置时。(2)可成字部件作义符时的启动作用只出现在处于主要义符位置时。(3)处在声符位置的可成字部件启动不仅促进对包含声符位置部件的汉字的识别, 还促进对包含主要义符位置部件的汉字的识别, 但阻碍对包含次要义符位置部件的汉字的识别。(4)当启动部件处于次要义符位置时, 不影响对包含相关部件的汉字的识别。整个研究表明, 部件位置效应不仅包含部件位置对汉字识别的影响, 还包含部件位置频率对汉字识别的影响。     

Examining the role of feedback in TMS-induced visual suppression: A cautionary tale

Visual suppression by single-pulse transcranial magnetic stimulation (sTMS) has been attributed to interruptions of either feedforward or feedback activity in the visual stream. The relative timing of the C1 event related potential (ERP) and of the TMS suppression, taken from separate studies, supports an interruption of feedback. Here we probe the validity of such cross-study comparisons, both by conducting a literature survey and by measuring each time window within participants for the same stimuli. Cortical transmission time was estimated using the C1. We then suppressed the same stimuli that elicited the C1 using sTMS of variable post-stimulus lags. Results do not conclusively discriminate between interruption of feedback or feedforward mechanisms as the source of the visual suppression. We suggest that more evidence is needed to distinguish between feedback and feedforward interference in TMS suppression effects and we advise caution in making inferences derived from separate literatures, using different stimuli.     

睡眠过程中信息加工的ERP研究进展

本文综述了事件相关电位(ERP)外源性成分———N1、MMN、N550和内源性成分———P3、N300、N400在睡眠过程中的特点,以及论述了各成分在睡眠信息加工中的作用。     

The stability of alexithymia during work in a high‐stress environment: A prospective study of Swedish peacekeepers serving in Kosovo

Larsson, M. R., Bäckström, M., Michel, P.‐O. & Lundh, L.‐G. (2010). The stability of alexithymia during work in a high‐stress environment: A prospective study of Swedish peacekeepers serving in Kosovo. Scandinavian Journal of Psychology. We applied a prospective design to reinvestigate the issue whether the sub‐domains of alexithymia could be considered stable traits or distress‐related states. Assessments of alexithymia and subjective distress were conducted before deployment to Kosovo in a sample of male peacekeepers. A second assessment was conducted approximately six months later during the final phase of service. The results showed evidence of moderate to high relative stability in all alexithymic sub‐domains. It was also found that a relative change in subjective distress predicted a relative change in difficulty identifying feelings and difficulty describing feelings but not in externally oriented thinking. We suggest therefore that the alexithymic sub‐domains could be considered relatively stable traits but that the level of difficulty identifying and describing feeling varies with the level of subjective distress.     

Haptic modality takes its time: Dynamic of activations of sensory modalities in perceptual and memory processes

Based on claims resulting from grounded cognition theory that perceptual and memory processes are using the same distributed systems, the present study investigated the temporal aspect of access to memory traces through haptic and auditory modalities. Unlike in the case of visual or auditory components, the perception of a vibrotactile component is more sequential in nature and therefore cannot be fully processed before the end of the signal. The present study explores the dynamic of components activation in a situation of audio‐vibrotactile asynchrony. We used a short‐term priming paradigm consisting of an association phase (between a vibration and sound) and a test phase testing priming effect of a vibrotactile stimulation on the processing of a target sound. Results showed an interference with a simultaneous processing and a facilitation with a sequential processing. The temporality process of perceptual components is also important at a memory level.     

Prospective memory in youth with perinatally-acquired HIV infection

Youth with perinatal HIV infection (PHIV) are at increased risk for neurocognitive impairment (NCI). Prospective memory (PM) is a complex neurocognitive function that has been shown to be impaired in adults with HIV disease and independently associated with poorer daily living skills, including medication nonadherence. The current study sought to determine the presence and extent of PM deficits in youth with PHIV. Participants included 173 youth with PHIV and 85 youth perinatally HIV-exposed but uninfected (PHEU), mean age 14.1 years, 75% black, 18% Hispanic. Among youth with PHIV, 26% had a past AIDS-defining condition (Centers for Disease Control and Prevention [CDC], Class C), 74% did not (non-C). Adjusted generalized estimating equation models were used to compare groups (PHIV/C, PHIV/non-C, and PHEU) on the Naturalistic Event-Based Prospective Memory Test (NEPT) and the Prospective Memory Assessment for Children & Youth (PROMACY). Secondarily, subgroups defined by HIV serostatus and global NCI were compared (PHIV/NCI, PHIV/non-NCI, PHEU). PHIV/C had significantly lower NEPT scores than PHEU, with decreases of 40% in mean scores, but did not differ from PHIV/non-C. PHIV/NCI had 11–32% lower PROMACY scores and 33% lower NEPT scores compared to PHIV/non-NCI (all p < .05); significantly, lower scores for PHIV/NCI versus PHEU also were observed for PROMACY and NEPT indices. Findings suggest a subset of youth with PHIV (those with a prior AIDS-defining diagnosis) is vulnerable to PM deficits. The extent to which PM deficits interfere with development and maintenance of independent living and health-related behaviors during transition to adulthood requires further study.     

Anxiety sensitivity as a predictor of panic disorder symptoms: a prospective 3-year study

Background and Objectives: Anxiety sensitivity (AS) is the fear of anxiety symptoms, a feature proven to be an important vulnerability factor for anxiety pathogenesis. The aim of this study was to examine whether AS (as well as its factors) predicts the onset of panic disorder symptoms when controlling for the contribution of trait anxiety.

Design: We conducted a prospective 3 year follow up study.

Methods: The participants, students at the Humanities and Social Sciences in Zagreb (N?=?1087), completed an Anxiety Sensitivity Index and State-Trait Anxiety Inventory (Trait form) and, after a period of three years, were asked to self-assess criteria for panic disorder (according to the DSM-5).

Results: The predictive validity of AS for the onset of panic disorder symptoms, regardless of trait anxiety, was confirmed. Furthermore, the physical concerns dimension of AS was the only significant predictor of panic disorder symptoms. The optimal cutoff score of 25 on the ASI provides poor to moderate accuracy indices in detecting participants who will manifest panic disorder symptoms in the next three years.

Conclusion: This study contributes to our current understanding of AS as a prospective risk factor for panic disorder symptoms.     

前瞻记忆类型差异及动机与任务序列对前瞻记忆的影响*

本文采用“模拟星期”范式通过3个实验分别考察了前瞻记忆任务类型的差异以及动机与任务序列对前瞻记忆的影响。结果表明：(1)规律性前瞻记忆任务的正确率显著高于非规律性的,即使本研究条件下对非规律性前瞻记忆任务进行奖励与惩罚,仍没有消除两者间的差异。(2)不论是惩罚还是奖励都可以显著提高非规律性前瞻记忆的成绩,而且动机促进作用会蔓延至非直接强化的前瞻记忆任务。(3)固定序列前瞻记忆成绩显著优于随机序列的,且在实验过程中固定序列前瞻记忆的成绩呈上升趋势,而随机序列的基本不变,固定序列在一定程度上反映了行为习惯的建立过程。(4)不论前瞻记忆任务规律与否,惩罚或奖励,任务序列如何,基于时间的前瞻记忆成绩均优于基于事件的前瞻记忆的成绩。(5)时间确认任务中,被试翻看时钟的次数与其正确率间呈显著正相关,且越临近规定时间翻看次数越多,呈J型分布。     

Braine心理逻辑理论述评

该文对Braine提出的在推理心理学研究领域占居重要地位的“心理逻辑理论”做了综合述评。“心理逻辑理论”主要包括三方面内容:构成“心理逻辑理论”基础的一组推理规则图式、将推理规则图式应用于推理过程的推理方案、实际应用意义。Braine认为他和他的同事于1984年设计并实施的以“自然推理系统”所含各推理规则为实验材料的实验结果支持该理论的基本观点。