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31.
Mantra is a free and open-source software package for object tracking. It is specifically designed to be used as a tool for
response collection in psychological experiments and requires only a computer and a camera (a webcam is sufficient). Mantra
is compatible with widely used software for creating psychological experiments. In Experiments 1 and 2, we validated the spatial and temporal precision of Mantra in realistic experimental settings. In Experiments 3 and 4, we validated the spatial precision and accuracy of Mantra more rigorously by tracking a computer controlled physical stimulus
and stimuli presented on a computer screen. 相似文献
32.
We investigated short- and long-term effects of training with anxiety on police officers’ shooting behavior under pressure.
Using a pretest, posttest, and retention test design, 27 police officers executed a shooting exercise against an opponent
that did (high anxiety) or did not (low anxiety) shoot back using colored soap cartridges. During the training sessions, the
experimental group practiced with anxiety and the control group practiced without anxiety. At the pretest, anxiety had a negative
effect on shot accuracy for both groups. At the posttest, shot accuracy of the experimental group no longer deteriorated under
anxiety, while shot accuracy of the control group was still equally affected. At the retention test, 4 months after training,
positive results for the experimental group remained present, indicating that training with anxiety may have positive short-
and long-term effects on police officers’ shot accuracy under pressure. Additional analyses showed that these effects are
potentially related to changes in visual attention on task-relevant information. 相似文献
33.
34.
Prado J Van der Henst JB Noveck IA 《Quarterly journal of experimental psychology (2006)》2008,61(8):1143-1150
Relational reasoning (A > B, B > C, therefore A > C) shares a number of similarities with numerical cognition, including a common behavioural signature, the symbolic distance effect. Just as reaction times for evaluating relational conclusions decrease as the distance between two ordered objects increases, people need less time to compare two numbers when they are distant (e.g., 2 and 8) than when they are close (e.g., 3 and 4). Given that some remain doubtful about such analogical representations in relational reasoning, we determine whether numerical cognition and relational reasoning have other overlapping behavioural effects. Here, using relational reasoning problems that require the alignment of six items, we provide evidence showing that the subjects' linear mental representation affects motor performance when evaluating conclusions. Items accessible from the left part of a linear representation are evaluated faster when the response is made by the left, rather than the right, hand and the reverse is observed for items accessible from the right part of the linear representation. This effect, observed with the prepositions to the left of and to the right of as well as with above and below, is analogous to the SNARC (Spatial Numerical Association of Response Codes) effect, which is characterized by an interaction between magnitude of numbers and side of response. 相似文献
35.
36.
Justification of effort is a form of cognitive dissonance in which the subjective value of an outcome is directly related
to the effort that went into obtaining it. However, it is likely that in social contexts (such as the requirements for joining
a group) an inference can be made (perhaps incorrectly) that an outcome that requires greater effort to obtain in fact has
greater value. Here we present evidence that a cognitive dissonance effect can be found in children under conditions that
offer better control for the social value of the outcome. This effect is quite similar to contrast effects that recently have
been studied in animals. We suggest that contrast between the effort required to obtain the outcome and the outcome itself
provides a more parsimonious account of this phenomenon and perhaps other related cognitive dissonance phenomena as well.
Research will be needed to identify cognitive dissonance processes that are different from contrast effects of this kind.
nt]mis|This research was facilitated by a fellowship from the Fulbright Scholar Program and the Nord-Pas de Calais Regional
Council, as well as by a visiting professorship at the University of Lille III for T.R.Z. Preparation of the article was facilitated
by National Institute of Mental Health Grant MH 63726 to T.R.Z. 相似文献
37.
Andero R Torras-Garcia M Quiroz-Padilla MF Costa-Miserachs D Coll-Andreu M 《Neurobiology of learning and memory》2007,87(4):510-521
The pedunculopontine tegmental nucleus (PPTg) is involved in the regulation of thalamocortical transmission and of several functions related to ventral and dorsal striatal circuits. Stimulation of the PPTg in anesthetized animals increases cortical arousal, cortical acetylcholine release, bursting activity of mesopontine dopaminergic cells, and striatal dopamine release. It was hypothetized that PPTg stimulation could improve learning by enhancing cortical arousal and optimizing the activity of striatal circuits. We tested whether electrical stimulation (ES) of the PPTg, applied to freely-moving awake rats previously implanted with a chronic electrode, would improve the acquisition and/or the retention of two-way active avoidance conditioning, and whether this effect would depend on the specific PPTg region stimulated (anterior vs posterior) and on the time of ES: just before (pre-training) or after (post-training) each of three training sessions. The treatment consisted of 20 min of ES (0.2 ms pulses at 100 Hz; current intensity: 40-80 microA). The results showed that (1) this stimulation did not induce either any signs of distress nor abnormal behaviors, apart from some motor stereotyped behaviors that disappeared when current intensity was lowered; (2) pre-training ES applied to the anterior PPTg improved the acquisition of two-way active avoidance, (3) no learning improvement was found after either post-training ES of the anterior PPTg, or pre- and post-training ES of the posterior PPTg. The results give support to a role of PPTg in learning-related processes, and point to the existence of functional PPTg regions. 相似文献
38.
Distinct ventral and dorsal hippocampus AP5 anxiolytic effects revealed in the elevated plus-maze task in rats 总被引:1,自引:0,他引:1
The hippocampal formation (HPC) mediates processes associated with learning, memory, anxiety and fear. The glutamate N-methyl-d-aspartate (NMDA)-receptor subtype is involved in many HPC functional processes related to learning and memory. Although not tested for the HPC, NMDA-receptor antagonists reduced fear and anxiety related responses when applied to other brain regions mediating defensive behaviour. Consequently, this study evaluated the effects of ventral or dorsal HPC application of the NMDA-receptor antagonist, AP5, in rats submitted to the Trial 1/Trial 2 elevated plus-maze (EPM) task. Ventral, but not dorsal, infusions of AP5 (6 and 24 nmol) before EPM Trial 1 increased open arms exploration and reduced risk assessment behavior, suggesting an anxiolytic-like effect. Furthermore, no interference in the avoidance responses was detected during EPM Trial 2 after AP5 infusion into the ventral or dorsal HPC before Trial 1, post-trial 1, or before Trial 2. These data support the notion of differential involvement of ventral HPC, but not dorsal, in mechanisms associated with anxiety and suggest the participation of the glutamatergic transmission, through NMDA receptor, into the ventral HPC in the mediation of defensive behavior. 相似文献
39.
The new independent Christian schools developed by parents and evangelical churches in the United Kingdom since the late 1960s remain controversial among both Christian and secular educators. In response to this controversy, the present study traced 106 men who had graduated from these schools between 1985 and 2003 and analysed their evaluation of the education they had received in these schools within four main themes: the quality of the education, the context of Christian and moral nurture, the quality of relationships (among the pupils, with the teachers and with the wider world) and preparation received for life after leaving school. Although there were some issues of criticism, the balance of opinion among the former pupils within all four areas was generally supportive of the new independent Christian schools, which were generally perceived as having prepared them well for life. 相似文献
40.
We often feel that our perceptual experience is richer than what we can express. For instance, when flashed with a large set of letters, we feel that we can see them all, while we can report only a few. However, the nature of this subjective impression remains highly debated: while many favour a dissociation between two forms of consciousness (access vs. phenomenal consciousness), others contend that the richness of phenomenal experience is a mere illusion. Here we addressed this question with a classical partial-report paradigm now modified to include unexpected items in the unreported parts of the stimuli. We show that even in the presence of unexpected pseudo-letters, participants still felt that there were only letters. Additionally, we show that this feeling reflects an illusion whereby participants reconstruct letters using partial letter-like information. We propose that the feeling of seeing emerges from the interplay between partially accessible information and expectations. 相似文献