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41.
Anne-Marie Schuller Danielle Hoffmann Valérie Goffaux 《Journal of Cognitive Psychology》2015,27(4):442-458
Fischer et al. demonstrated that a centrally presented number can shift attention to the left/right when its magnitude is small/large. Two electrophysiological studies described these attentional effects as event-related potentials (ERPs) at centro-parietal sites. Since both studies used target detection tasks, it remains currently unknown whether similar results would be obtained with a discrimination task. We used ERPs to test whether digit cues also induce attention shifts when participants perform a feature-discrimination task on targets. ERPs were recorded whereas subjects discriminated the colour of lateral targets that were preceded by a central non-predictive digit. Analysis of cue-locked controlateral vs. ipsilateral ERP activity showed the emergence of early preparatory attention-directing components in parietal and frontal regions. Moreover, target-locked P1 components at occipito-parietal sites were significantly modulated by digit magnitude-target side congruency. These results demonstrate that irrelevant digit cues also bias sensory processing when embedded in a feature-discrimination task. 相似文献
42.
Jan Schmutz Florian Hoffmann Ellen Heimberg Tanja Manser 《European Journal of Work and Organizational Psychology》2015,24(5):761-776
Coordination in health care action teams is an important factor in clinical performance and patient safety. Implementing a high-fidelity in situ simulation study, we investigated the performance-relevant effects of task distribution, provide information without request (PIWR) and closed-loop communication (CLC) in 68 medical emergency teams (METs) composed of fully qualified clinicians. We differentiated between two task types: algorithm-driven and knowledge-driven tasks. We assigned two different emergency tasks to each task type. We proposed not only a direct relationship between the three coordination behaviours and clinical performance, but also a moderating role for the type of task. Only CLC was related to performance and also moderated by task type. There was no relationship between the coordination behaviours task distribution and PIWR and performance. We discuss the differential effects of the three coordination behaviours on performance and emphasize the importance of the task in team research. In particular, we highlight theoretical and practical implications. 相似文献
43.
A content analysis of research published in the Journal of Counseling Psychology (JCP) was conducted for Volumes 46 (1999) through 56 (2009). The analysis involved the placement of 514 articles in 15 substantive content categories. In addition, we identified the most frequently published authors, most frequent institutional affiliations, and several reported demographic characteristics. The principal areas of research activity in the JCP were multiculturalism and/or diversity, research on development and evaluation of tests and measures, personality and adjustment, outcome research, and interpersonal and/or social support and/or attachment, with these categories accounting for 57% of the articles published. Over 40% of the samples reported were college students, with a large number of samples including both genders and indicating the ethnic breakdown. This content analysis revealed that the JCP has remained consistent with its stated mission while incorporating changes in the field in its publications. 相似文献
44.
Timo D. Vloet Ivo Marx Berrak Kahraman-Lanzerath Florian D. Zepf Beate Herpertz-Dahlmann Kerstin Konrad 《Journal of abnormal child psychology》2010,38(7):961-969
Attention-deficit/hyperactivity Disorder (ADHD) and obsessive–compulsive disorder (OCD) have both been linked to dysfunction
in the cortico-striato-thalamo-cortical circuitry (CSTCC). However, the exact nature of neurocognitive deficits remains to
be investigated in both disorders. We applied two neuropsychological tasks that tap into different functions associated with
the CSTCC, namely a serial reaction time (SRT) task, developed to assess implicit sequence learning, and a delay aversion
(DA) task in order to assess abnormal motivational processes. The performance data of boys with ADHD (n = 20), OCD (n = 20) and healthy controls (n = 25), all aged 10–18 years, were compared. Subjects with ADHD less frequently chose the larger, more delayed reward compared
to those with OCD and controls, while subjects with OCD showed impaired implicit learning. In contrast, the ADHD group was
unimpaired in their implicit learning behavior and the OCD group was not characterized by a DA style. Within the OCD-group,
severity of obsessions was associated with implicit learning deficits and impulsive symptoms with DA in the ADHD-group. This
double dissociation highlights the distinct cognitive dysfunctions associated with ADHD and OCD and might possibly point to
different neural abnormalities in both disorders. 相似文献
45.
This article presents an assessment of the relative influences of time spent participating in organized sports and informal sports during childhood with respect to the development of general creativity. In this study, 99 upper-division undergraduate and graduate students completed a comprehensive childhood leisure activities questionnaire and the Abbreviated Torrance Test for Adults. According to the results of the joint generalized least-squares regression analysis, hours spent in organized sport settings was negatively related to creativity as an adult; time spent in unstructured sport settings was found to be positively related to adult creativity. The findings also point to the importance of balancing participation across organized and unstructured settings. The most creative individuals in the sample were those who spent roughly half of their sport participation time in each setting, as opposed to individuals with below-average creativity, who spent upwards of 3/4 of their sport participation time in organized settings. Therefore, fostering creative development through sport may not require a dramatic reorientation from current youth sport development models, but only a shift toward a more balanced distribution of time spent playing in both organized and unstructured settings. Future experiments are needed to test this relationship. 相似文献
46.
The authors investigated the play/interaction-style theory of gender segregation with a sample of 39 children aged 2 to 5 years (primarily Caucasian). According to this theory, children prefer playmates with styles of play or interaction that are similar to their own. Because such styles are sex differentiated, same-sex playmate preference (i.e., gender segregation) results. The authors observed children during free play to determine preferred playmates and gender segregation level, and they used teacher ratings to derive play/interaction-style scores. The authors used a multiple regression approach to path analysis to analyze effects of sex of participant, participants' play/interaction-style scores, playmates' play/interaction-style scores, and degree of gender segregation to determine their effects on one another. The authors observed significant levels of gender segregation, with highly aggressive or active children displaying less segregation than their peers did. However, gender segregation was not associated with a preference for playmates with similar play or interaction styles. 相似文献
47.
Three experiments are reported, investigating the effects of using 1 or 2 hands when making convergent low index of difficulty (ID) and visually controlled movements (2 hands meeting together). The experiments involved movements in four different cases—a probe held in the right hand and moved to a target held in the stationary left hand, vice versa of this arrangement, both hands moving with the probe in the right hand and target in the left hand, and vice-versa of this arrangement. Experiments were the standard Fitts’ paradigm, moving a pin into a hole and a low-ID task. In Fitts’ task, 2-hand movements were faster than 1 hand only at higher IDs; this was also the case in the pin-to-hole transfer task and the movement times were lower when the pin was held in the preferred hand. Movements made with low ID showed a small effect of 1- or 2-handed movements, with the effective amplitude of the movement being reduced by about 20% when 2 hands were used. 相似文献
48.
Florian Süptitz María Moreno Catalá Gert-Peter Brüggemann Kiros Karamanidis 《Human movement science》2013
The current study aimed to determine potential differences in dynamic stability control during perturbed walking across the adult female lifespan and to test the hypothesis that such differences can be assessed by a reduced kinematic model. 11 young-aged (22–30 years), 9 middle-aged (41–59 years) and 14 old-aged (62–75 years) female adults walked on a treadmill while the right leg was unexpectedly perturbed once during the swing phase. Margin of stability (MS) at touchdown was investigated using a full body and a reduced kinematic model. After the perturbation, all age groups showed a lower MS compared to non-perturbed gait (baseline), leading to negative MS. Four old-aged adults failed to cope with the task (only preventing a fall by grasping). The remaining ten old-aged and the middle-aged subjects required three more recovery steps than the young-aged adults to get back to baseline MS. Moreover, there were no differences between kinematic models, and both methods demonstrated similar age-related findings. We concluded that the ability to control dynamic stability during perturbed walking by enlarging the base of support has already begun to deteriorate by middle age. Further, the valid agreement between kinematic models shows that such differences can be assessed by using just four body markers. 相似文献
49.
The current study examines the personal epistemology of fourth-grade elementary school teachers from Germany (n = 10) and the United States (n = 10) to gain a more nuanced understanding of teachers’ beliefs about knowledge and knowing through a cross-cultural lens. Analyses of semi-structured interviews reveal similarities and differences in the statements of teachers. Four themes are identified: The majority of teachers believed that (a) knowing is uncertain and (b) knowledge has domain-specific qualities; (c) U.S. teachers seemed to view knowledge more as being embedded within their community, while (d) German teachers discussed more internal knowledge sources. The general discussion includes possible cross-cultural explanations for these four emerging themes and points tentatively to developmental issues stemming from uncertainty beliefs. Conceptual and educational implications are discussed and suggestions for future research are given. 相似文献
50.