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171.
《Quarterly journal of experimental psychology (2006)》2013,66(11):1629-1640
When switching tasks, performance tends to be worse for n – 2 repetitions than with n – 2 switches. This n – 2 repetition cost has been hypothesized to reflect task-set inhibition: specifically, inhibition of irrelevant category–response mappings involved in response selection. This hypothesis leads to divergent predictions for situations in which all tasks involve the same stimulus categories: An n – 2 repetition cost is predicted when response sets differ across tasks, but not when the response set stays the same. The authors tested these predictions by having subjects perform relative judgements with different reference points. In Experiment 1, the stimulus categories were the same across reference points, but the response set either differed or stayed the same (the multiple- and single-mapping conditions, respectively). An n – 2 repetition cost was found in the multiple-mapping condition but not in the single-mapping condition. Experiment 2 provided evidence against the possibility that these divergent effects reflected differences in memory load. These findings confirm predictions that link n – 2 repetition costs to inhibition of irrelevant category–response mappings. 相似文献
172.
《Quarterly journal of experimental psychology (2006)》2013,66(3):542-569
Two experiments examined how locations in environmental spaces, which cannot be overseen from one location, are represented in memory: by global reference frames, multiple local reference frames, or orientation-free representations. After learning an immersive virtual environment by repeatedly walking a closed multisegment route, participants pointed to seven previously learned targets from different locations. Contrary to many conceptions of survey knowledge, local reference frames played an important role: Participants performed better when their body or pointing targets were aligned with the local reference frame (corridor). Moreover, most participants turned their head to align it with local reference frames. However, indications for global reference frames were also found: Participants performed better when their body or current corridor was parallel/orthogonal to a global reference frame instead of oblique. Participants showing this pattern performed comparatively better. We conclude that survey tasks can be solved based on interconnected local reference frames. Participants who pointed more accurately or quickly additionally used global reference frames. 相似文献
173.
《Quarterly journal of experimental psychology (2006)》2013,66(6):1090-1103
One of the most widely used tasks in the spatial memory literature is the judgement of relative direction (JRD) test. The present investigation examined the hypothesis that standard JRD task demands bias spatial recall. In two experiments, participants' recall of small-scale layouts as measured by standard JRD tests (in which the relationship between objects was employed to establish imagined orientations within the learned scene) was compared with recall as measured by novel JRD tasks. The novel tasks emphasized either the internal front/back and left/right axes of individual objects (Experiment 1) or extrinsic spatial cues (Experiment 2). Spatial recall was found to reflect the reference cues emphasized by the JRD task in Experiment 1 and by the novel task in Experiment 2. The finding that directional judgements tended to reflect a frame of reference aligned with the set of cues emphasized by task demands suggests that the nature of the task employed to test knowledge can have an effect on spatial recall. 相似文献
174.
Careers unfold within and are bound by multiple social contexts. Newer career concepts have postulated a growing need for personal agency in overcoming structural constraints, especially organizational and occupational boundaries. As a consequence, research has focused more on the individual than on contextual factors. In order to answer recent criticism of this unbalanced view we argue that the impact of reference groups needs to be better understood, both as social drivers of agentic behavior and as social constraints that, for instance, reduce the permeability of boundaries. Drawing on identity theories and social network literature we suggest a classification of reference groups in which social domains (e.g., organization, occupation, family, friends), types of groups (known people, abstract social categories), and functions (normative, comparative, supportive) are distinguished. The reference group classification is employed to discuss extant career research and to propose three directions for future research: a) Fuller consideration of different social domains beyond the employing organization for a more complete understanding of social influences in contemporary careers; b) exploration of the possibly growing relevance of abstract social categories as referents, especially for subjective career success; and c) systematic analysis of the interaction between normative, comparative, and supportive functions of individuals' social networks. Across these themes, possible negative influences of reference groups and effects of imposed rather than chosen referents are also to be considered. Implications of the suggested research for better understanding the interaction between structure and agency in shaping careers and career identity are discussed. 相似文献
175.
Heiko Lex Matthias Weigelt Andreas Knoblauch Thomas Schack 《Journal of motor behavior》2013,45(6):389-396
The authors investigated the effects of cognitive representations of movement directions on sensorimotor adaptation performance. Adaptation performance was measured via a pointing experiment in which participants were provided with visual feedback that was distorted along the midsagittal plane (i.e., left-right reversal). Performance was analyzed relative to participants’ individual adaptation gains and 3 groups were subsequently defined (i.e., skilled, average, and poor adapters). The group separation was kept for the Cognitive Measurement of Represented Directions, which was used to analyze participants’ cognitive representation of movement directions. The results showed that skilled adapters, in contrast to poor adapters, possess a global representation of movement directions aligned to the cardinal axes. The cognitive representation structure hence supports the sensorimotor adaptation performance. 相似文献
176.
Oliver Langner Ron Dotsch Gijsbert Bijlstra Daniel H. J. Wigboldus Skyler T. Hawk Ad van Knippenberg 《Cognition & emotion》2013,27(8):1377-1388
Many research fields concerned with the processing of information contained in human faces would benefit from face stimulus sets in which specific facial characteristics are systematically varied while other important picture characteristics are kept constant. Specifically, a face database in which displayed expressions, gaze direction, and head orientation are parametrically varied in a complete factorial design would be highly useful in many research domains. Furthermore, these stimuli should be standardised in several important, technical aspects. The present article presents the freely available Radboud Faces Database offering such a stimulus set, containing both Caucasian adult and children images. This face database is described both procedurally and in terms of content, and a validation study concerning its most important characteristics is presented. In the validation study, all frontal images were rated with respect to the shown facial expression, intensity of expression, clarity of expression, genuineness of expression, attractiveness, and valence. The results show very high recognition of the intended facial expressions. 相似文献
177.
Hirokazu Doi 《Visual cognition》2013,21(1):72-98
The detection of emotional expression is important particularly when the expression is directed towards the viewer. Therefore, we conjectured that the efficiency in visual search for deviant emotional expression is modulated by gaze direction, which is one of the primary clues for encoding the focus of social attention. To examine this hypothesis, two visual search tasks were conducted. In Emotional Face Search, the participants were required to detect an emotional expression amongst distractor faces with neutral expression; in Neutral Face Search they were required to detect a neutral target among emotional distractors. The results revealed that target detection was accelerated when the target face had direct gaze compared to averted gaze for fearful, angry, and neutral targets, but no effect of distractor gaze direction was observed. An additional experiment including multiple display sizes has shown a shallower search slope in search for a target face with direct gaze than that with averted gaze, indicating that the advantage of a target face with direct gaze is attributable to efficient orientation of attention towards target faces. These results indicate that direct gaze facilitates detection of target face in visual scenery even when gaze discrimination is not the primary task at hand. 相似文献
178.
Previous studies have reported a negative correlation between the Behavioral Activation System (BAS) and the depressive mood. However, which is the cause and which is the effect cannot be determined simply by evaluating the correlation coefficients. In a series of this study, we used non‐normal structural equation modeling, which could provide a statistically plausible answer to the question on the path direction. We tested for the path direction between the variables of interest by statistically comparing all possible models. The models assuming a unidirectional path from the BAS to the depressive mood were consistently supported. This suggested that low BAS could be a predisposition to developing the depressive mood. These findings could enhance our understanding of the mechanism underlying the development of the depressive mood. 相似文献
179.
《Journal of motor behavior》2012,44(1):58-70
AbstractThe present study investigates the effect of sensory deprivation of the index and middle finger on motor function of all digits during maximal voluntary force production tasks. A total of 27 subjects performed maximal isometric pressing tasks by using different instructed finger combinations. Subjects completed the same tasks in two visits: a control visit when they had normal sensory feedback in all fingers, and an anesthesia visit when digital nerve blocks were performed on their right index and middle fingers. We evaluated three aspects of motor adaptation on both local (anesthetized) and non-local (non-anesthetized) digits during maximal force production: (1) task-relevant and overall force magnitude, (2) force directional application, and (3) digital individuation and force sharing. Our results indicate that selective digital anesthesia resulted in decreased maximal force magnitude, changed direction of force production, and significant changes extended to non-local digits. The motor weakness and inefficiency revealed in the non-local digits implies that sensory information from each digit can be shared across the digits to assist motor execution within the same hand. 相似文献
180.
Kees van Deemter Albert Gatt Ielka van der Sluis Richard Power 《Cognitive Science》2012,36(5):842-845
This response discusses the experiment reported in Krahmer et al.’s Letter to the Editor of Cognitive Science. We observe that their results do not tell us whether the Incremental Algorithm is better or worse than its competitors, and we speculate about implications for reference in complex domains, and for learning from ‘‘normal” (i.e., non‐semantically‐balanced) corpora. 相似文献