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231.
The hypothesis that, in magnitude estimation and production, subjects tend to pair numbers with sensation magnitudes on absolute rather than ratio scales is tested experimentally. This implies that not only sensations, but also numbers acquire absolute psychological magnitudes. The specific experiments are performed on loudness and line lengths. The latter reveal that the subjective magnitudes of numbers are formed before the age of 6 and do not change after that age. It is suggested that the absolute coupling of numbers with sensation magnitudes originates from the concept of numerosity where numbers have absolute meanings. This work was supported by N1H Grant NS-03950. 相似文献
232.
Thirty-two Subjects were assigned to four groups on the basis of handedness (left or right) and familial sinistrality (absent or present). Their laterality patterns were investigated with a cued order-of-report paradigm. On each trial, Subjects saw a tachistoscopic presentation of two outline drawings of common objects, one drawing on the left of a central fixation point, one on the right. A centered arrowhead appeared with the pictures; the arrowhead pointed either left or right, and its direction indicated the order of report. The results for each group were discussed in terms of asymmetry for rate of processing and rate of decay, and in comparison with our earlier study of word recognition. 相似文献
233.
This set of experiments is concerned with the specification of movement parameters hypothesized to be involved in the initiation of movement. Experiment 1 incorporated the precuing method developed by Rosenbaum in which a precue provided partial information of the upcoming movement before the stimulus to move. Under conditions in which precues were provided by letter symbols and stimuli were color-coded dots mapped to response keys. Rosenbaum found reaction times to be slower for the specification of arm than for direction, and both to be slower than the specification of extent. In Experiment 1, using precue and stimulus conditions that paralleled those employed by Rosenbaum, we obtained very similar findings. The three follow-up experiments extended these findings to more naturalized stimulus-response compatible conditions. We used a method in which precues and stimuli were directly specified through vision and mapped in a one-to-one manner with responses. In Experiment 2, although reacion times decreased as a function of the number of parameters precued, there were no systematic effects of precuing particular parameters. In Experiments 3 and 4, we incorported an ambiguous precue that, while serving to reduce task uncertainty, failed to provide any specific information as to the arm, direction, or extent of the upcoming movement. Initiation times did not systematically vary as a function of the type of parameter precued nor were there significant differences between specific and ambiguous precue conditions. In sum, only in Experiment 1 in which precues and stimuli involved complex cognitive transformations was there support for Rosenbaum's parameter specification model. When we employed highly compatible conditions, designed to reflect a real-world environment, we failed to obtain any tendency for movement parameters to be serially specified. We discuss grounds for suspecting the generality of parameter specification models and propose an alternative approach that is consonant with the dynamic characteristics of the motor control system. 相似文献
234.
The introduction of deep brain stimulation (DBS) as a treatment for medication-refractory essential tremor in the late 1980s revealed, for the first time, that "chronically" implanted brain hardware had the potential to modulate neurologic function with surprisingly low morbidity. Over time, the therapeutic promise of DBS has become evident in Parkinson's disease and dystonia. In some experienced centers, complex tremor disorders, such as posttraumatic Holmes tremor and the tremor of multiple sclerosis, are being increasingly targeted. More recently, other indications, including obsessive-compulsive disorder, Tourette's syndrome, major depression, and chronic pain, have been proposed. As the field has expanded, our knowledge about potential cognitive side effects of DBS has also expanded. This article reviews the current knowledge regarding the impact of stimulation of the subthalamic nucleus, globus pallidus internus, and ventralis intermedius nucleus of the thalamus on symptoms in essential tremor, Parkinson's disease, and dystonia. Also discussed are the emerging targets, what is known about the cognitive sequelae of DBS, and what has been learned about the complications and therapeutic failures. 相似文献
235.
Goodman GS 《The American psychologist》2005,60(8):872-881
The scientific study of child witnesses has influenced both developmental science and jurisprudence concerning children. Focusing on the author's own studies, 4 categories of research are briefly reviewed: (a) children's eyewitness memory and suggestibility; (b) memory for traumatic events in childhood; (c) disclosure of child sexual abuse; and (d) experiences of child victim/witnesses within the legal system. Implications for psychology and for legal practice are discussed. 相似文献
236.
The role of age in the perceptions of politics--job performance relationship: a three-study constructive replication 总被引:4,自引:0,他引:4
Treadway DC Ferris GR Hochwarter W Perrewé P Witt LA Goodman JM 《The Journal of applied psychology》2005,90(5):872-881
This research examined the interaction of organizational politics perceptions and employee age on job performance in 3 studies. On the basis of conservation of resources theory, the authors predicted that perceptions of politics would demonstrate their most detrimental effects on job performance for older workers. Results across the 3 studies provided strong support for the hypothesis that increases in politics perceptions are associated with decreases in job performance for older employees and that perceptions of politics do not affect younger employees' performance. Implications of these results, strengths and limitations, and directions for future research are discussed. 相似文献
237.
Higher desire for a romantic partner has been shown to be associated with lower life satisfaction for singles, but research has not considered whether the strength of this association might vary across age groups. We collected data from single participants (N = 3057) across a broad age range (18 to 75 years of age, mean = 36.12, standard deviation [SD] = 12.34) to examine age as a moderator of the relationship between desire for a partner and singles' life satisfaction. Our results suggest that having greater desire for a partner is associated with lower life satisfaction for older (1 SD above the mean or 48.46 years) versus younger (1 SD below the mean or 23.78 years) individuals. We also found some evidence that this age-dependent association was stronger for women than men. Further, this interaction effect remained largely unchanged controlling for participants' attachment anxiety or avoidance. This study highlights the importance of considering how singlehood may play out differently for individuals at different life stages. 相似文献
238.
239.
The use of luminescent panels controlled by solid-state circuitry to produce moving shadows is described. Advantages include lack of vibration, noise, and heat. 相似文献
240.
Geoff Lindsay 《Journal of School Psychology》1985,23(4):305-317
This paper describes the work of educational psychologists in England and Wales, within the context of the educational system in this part of the United Kingdom. The school system and its relationship to local national control is discussed. The development of psychological services is considered from their origin in 1913 to the present day, and data are given concerning the demographic aspects of the profession and current patterns of training. Current major contributions of educational psychologists are reviewed in a context of change consequent upon development from within the profession and that forced upon the profession by recent legislation, in particular the 1981 Education Act which, for the first time, gives educational psychologists a statuary role, in the assessment of children's special educational needs. 相似文献