Restrained eaters act on impulse

Impulsivity and bulimic symptoms often go together. It is not only the eating behaviour of bulimics that is impulsive; many studies show that the eating disorder frequently is accompanied by non-eating related impulsive behaviours like substance abuse, self-harm or theft. This co-morbidity suggests that there might be a more basic lack of inhibitory control that makes someone vulnerable for both the bulimic symptoms and the other impulsive behaviours. The present study tested whether an analogous group of 34 restrained eaters showed a basic inhibitory control deficit by using a stop-signal task, compared to 29 control women. It was found that the restrained eaters were significantly worse in inhibiting their basic non-food related motor responses than unrestrained eaters. Food exposure during the task did not affect motor performance. A fundamental lack of general response inhibition might play a role in the development of a specific eating disinhibition.     

Biases in Visual Attention in Children and Adolescents With Clinical Anxiety and Mixed Anxiety-Depression

Recent research has indicated that anxious adult and child patients and high trait-anxious adults selectively shift attention toward threatening stimuli. The present study extends this research and investigates the content-specificity of the effects in clinically anxious and mixed anxious–depressed children and adolescents. Twenty four generally anxious patients, aged 9 to 18, 19 mixed anxious–depressed patients, and 24 normal controls were comparable with respect to age, sex, verbal IQ, and vocabulary level. The participants carried out an attentional deployment task in which probe detection latency data were used to determine the distribution of visual attention for threat-related and depression-related material. The results showed that clinically anxious children, relative to controls, selectively allocated processing resources toward threat stimuli. However, mixed anxious–depressed children, relative to controls, did not show any attentional bias towards either threat- or depression-related stimuli. Preliminary data on age and gender differences are also presented. The results of this study are discussed in the light of previous research.     

Are the inhibitory and faciliatory effects during retrieval of semantically related items present in amnestic mild cognitive impairment?

Prefrontal functions subserve inhibition control for retrieval of semantically related items inducing forgetting 19 a-MCI patients and 29 controls underwent neuropsychological evaluation and retrieval-practice paradigm (RPP) to estimate baseline remember (BR), retrieval-induced facilitation (FAC) and retrieval-induced forgetting (RIF). A-MCI patients underwent also 3 T-MRI to assess relationship between regional grey matter (rGM) volumes and RPP indexes Behaviourally, RIF and FAC were both observed controls, while RIF only was observed in a-MCI patients. In patients but not in controls, RIF was associated with cognitive efficiency and FAC with memory performance. Patients showed also associations between BR and rGM volumes in the precuneus, no association was found between rGM volumes and RIF and FAC. A-MCI patients did not benefit from repeated practice during retrieval of studied items, which is likely due to their memory disorder. In contrast, patient cognitive efficiency would drive retrieval suppression of interfering stimuli.     

Distorted subjective reports of stimulus onsets under dual-task conditions: Delayed conscious perception or estimation bias?

We investigated whether selecting a response for one task delays the conscious perception of another stimulus (delayed conscious perception hypothesis). In two experiments, participants watched a revolving clock hand while performing two tasks in close succession (i.e. a dual-task). Two stimuli were presented with varying stimulus onset asynchrony (SOA). After each trial, participants separately estimated the onsets of the two stimuli on the clock face. Across two experiments and four conditions, we manipulated response requirements and assessed their impact on perceived stimulus onsets. Results showed that (a) providing speeded responses to the stimuli did lead to greater SOA-dependent misperceptions of both stimulus onsets as compared to a solely perceptual condition, and (b) that response grouping reduced these misperceptions. Overall, the results provide equivocal evidence for the delayed conscious perception hypothesis. They rather suggest that participants’ estimates of the two stimulus onsets are biased by the interval between their responses.     

Self‐oriented perfectionism and its relationship to selective attention: An experimental examination using social cognitive paradigm1

The cognitive biases associated with perfectionism include a selective attention to failure and the discounting of success. The present study experimentally focused on the relation between self‐oriented perfectionism (SOP) and selective attention using the social cognitive paradigm. Forty undergraduate students who were identified as either high or low in SOP were asked to perform modified versions of the Stroop task. The results suggest that participants with high SOP did not take longer to respond to failure words than to neutral words, but their reaction time to failure words was longer than that of participants with low SOP. These findings provided the basis for cognitive behavioral biases for perfectionism.     

知识图景vs.生活世界:关系空间内的医患沟通及其启示

在因诊疗形成的关系空间内, 医患沟通的本质是来自患方的社会认知与来自医方的知识认知之间的交流。基于知识图景的医方话语传递成为医疗空间内医患沟通的主要方式, 这容易导致专断权威、忽略患者经验和情感。欲使医患关系更加融洽, 有赖于患方基于生活世界的认识能否为医方所洞察和理解, 进而使医学专业知识能够被生活世界建构的经验所理解、信任和遵从。目前主观上的医方情感沟通的动力不足, 客观上的沟通时间匮乏, 导致了医患沟通的障碍。应当从加强基层医疗机构建设、促进沟通从疾病转向体验、尊重和促成患者的自主决策等方面着手, 实现知识图景与生活世界的交融, 构建和谐的医患关系。     

人如其食：食物性别刻板印象及对人物评价的影响

食物在社会生活中发挥着重要作用, 具有性别文化意义。两个研究分别探索了外显与内隐食物性别刻板印象的存在及其对人物评价的影响。研究1采用提名法、自我报告法和语义启动范式检验外显和内隐食物性别刻板印象的存在, 结果表明被试均持“男性偏好男性化食物, 女性偏好女性化食物”的外显食物性别刻板印象, 女性被试持有内隐食物性别刻板印象。研究2采用情境实验法和内隐关系评估程序进一步测量被试对食物性别刻板不一致目标人物在热情和能力维度上的评价, 结果发现人们对食物性别刻板不一致男性在热情维度的内隐评价更加积极。     

The contribution of prefixes to morphological processing of Spanish words

Three series of priming experiments were conducted to probe the morphological and phonological contributions to visual word recognition in Spanish. Prefixed, e.g., INCAPAZ (incapable), and pseudoprefixed, e.g., INDUSTRIA (industry) target words were presented for recognition following a prefixed, e.g., infeliz (unhappy), or pseudoprefixed, e.g., insulto (insult), prime starting with the same syllable as the target, at masked short or long stimulus onset asynchronies (SOAs). At long SOAs the recognition of prefixed targets was facilitated by prefixed primes and inhibited by pseudoprefixed ones, whereas both prefixed and pseudoprefixed primes facilitated the recognition at short SOAs. In contrast, the recognition of pseudoprefixed targets was unaffected by the kind of prime presented, even when we used pairs of words overlapping in syllables that cannot be prefixes in Spanish. These results support a special status for morphological elements in access to meaning in reading.     

Good and bad effects of phonological similarity on word and nonword recall: The role of beginnings and ends

This study explored whether earlier results of differential (harmful vs. helpful) short-term memory effects of shared syllables at nonword beginnings compared to ends could be replicated for lists of bisyllabic real words. We studied immediate serial recall of lists that had phonologically redundant syllables at the beginnings or ends of two-syllable words or nonwords. The results showed that redundancy at the beginning had a negative effect on both types of material. Redundancy at the end did not impair memory for nonwords but harmed the serial recall of words. Irrespective of lexicality, lists of beginning-redundant items were more difficult to recall than end-redundant items. The distribution of errors suggested that the better recall of end-redundant lists compared to beginning-redundant lists was related to a positive effect at encoding and/or retention, independent of effects at recall, for both words and nonwords.     

Mental rotation is not easily cognitively penetrable

When participants take part in mental imagery experiments, are they using their “tacit knowledge” of perception to mimic what they believe should occur in the corresponding perceptual task? Two experiments were conducted to examine whether such an account can be applied to mental imagery in general. These experiments both examined tasks that required participants to “mentally rotate” stimuli. In Experiment 1, instructions led participants to believe that they could reorient shapes in one step or avoid reorienting the shapes altogether. Regardless of instruction type, response times increased linearly with increasing rotation angles. In Experiment 2, participants first observed novel objects rotating at different speeds, and then performed a mental rotation task with those objects. The speed of perceptually demonstrated rotation did not affect the speed of mental rotation. We argue that tacit knowledge cannot explain mental imagery results in general, and that in particular the mental rotation effect reflects the nature of the underlying internal representation and processes that transform it, rather than participants’ pre-existing knowledge.