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91.
Willy Eriksen Jon M. Sundet Kristian Tambs 《British journal of psychology (London, England : 1953)》2013,104(2):212-224
We examined the relationship between the parents’ education levels and the adult intelligence of their children in a population‐based, nationwide sample of Norwegian half‐brothers with different fathers (2,016 pairs of half‐brothers). In a family where the mother has two children with different men, the firstborn child usually lives with the younger child's father during a period of their childhood. This makes it possible to study the non‐genetic effects of paternal education on children's development. Results showed that the education level of the younger half‐brother's father was positively associated with the intelligence score of the older half‐brother. The education level of the older half‐brother's father was not associated with the intelligence score of the younger half‐brother. Firstborn men whose half‐brothers’ fathers had high levels of education had intelligence scores that were 33% (95% confidence interval: 18–47%) of a standard deviation higher than those of firstborn men whose half‐brothers’ fathers had low levels of education, after adjustment for the biological fathers’ education levels, mothers’ education levels, and other background factors. These findings are compatible with the hypothesis that a child's family environment exerts an effect on the cognitive abilities of the child that lasts into adulthood. 相似文献
92.
Charles W. Eriksen 《Visual cognition》2013,21(2-3):101-118
Abstract Research has shown that the reaction-time interference produced by the flankers task arises, at least in large part, from the incipient activation of competing responses. The response competition paradigm has made valuable contributions to evaluating continuous flow versus discrete stage models of information processing as well as understanding cortical evoked potentials. The paradigm has been used to map the visual attentional field as a function of task demands and has also been found useful in the study of memory. It offers promise in studies of cognitive categorization and has provided insights into the “fast same effect” on same-different judgements on comparison tasks. It is currently being applied to the study of disjunctive comparisons. 相似文献
93.
Lasse Suonperä Liebst Richard Philpot Wim Bernasco Kasper Lykke Dausel Peter Ejbye-Ernst Mathias Holst Nicolaisen Marie Rosenkrantz Lindegaard 《Aggressive behavior》2019,45(6):598-609
Are individuals willing to intervene in public violence? Half a century of research on the “bystander effect” suggests that the more bystanders present at an emergency, the less likely each of them is to provide help. However, recent meta-analytical evidence questions whether this effect generalizes to violent emergencies. Besides the number of bystanders present, an alternative line of research suggests that pre-existing social relations between bystanders and conflict participants are important for explaining whether bystanders provide help. The current paper offers a rare comparison of both factors—social relations and the number of bystanders present—as predictors of bystander intervention in real-life violent emergencies. We systematically observed the behavior of 764 bystanders across 81 violent incidents recorded by surveillance cameras in Copenhagen, Denmark. Bystanders were sampled with a case–control design, their behavior was observed and coded, and the probability of intervention was estimated with multilevel regression analyses. The results confirm our predicted association between social relations and intervention. However, rather than the expected reversed bystander effect, we found a classical bystander effect, as bystanders were less likely to intervene with increasing bystander presence. The effect of social relations on intervention was larger in magnitude than the effect of the number of bystanders. We assess these findings in light of recent discussions about the influence of group size and social relations in human helping. Further, we discuss the utility of video data for the assessment of real-life bystander behavior. 相似文献
94.
95.
Allocation of attention in the visual field 总被引:12,自引:0,他引:12
C W Eriksen Y Y Yeh 《Journal of experimental psychology. Human perception and performance》1985,11(5):583-597
This research investigated whether attentional resources can be simultaneously allocated to several locations in a visual display, whether the mode of processing (serial or parallel) can be switched within a trial, and the nature of the costs when attentional resources are concentrated on an invalid location. Subjects were required to determine which of two target letters was present in eight-letter circular displays. In precue conditions, a primary and a secondary target location were designated 150 ms before target onset by an indicator that varied in validity. In the control conditions no cue was provided. A second experiment verified several assumptions that had been made in interpreting the data of Experiment 1. Modifications in Jonides' (1983) two-process model were suggested in terms of a zoom lens model of attentional resources. Instead of two alternative processing modes, attentional resources are conceived as capable of distribution over the visual field, but with low resolving power, or as continuously constricting to small portions of the visual field with a concomitant increase in processing power. 相似文献
96.
Pre- and poststimulus activation of response channels: a psychophysiological analysis 总被引:11,自引:0,他引:11
G Gratton M G Coles E J Sirevaag C W Eriksen E Donchin 《Journal of experimental psychology. Human perception and performance》1988,14(3):331-344
To examine mechanisms of response activation, we asked subjects to respond differentially to the central letter of one of four arrays--HHHHH, SSHSS, SSSSS, and HHSHH--and measured event-related brain potentials (ERPs) and electromyographic activity (EMG). For very fast responses, accuracy was at chance level for all arrays, suggesting that subjects were guessing. For intermediate latency responses, accuracy was above chance if the noise was compatible with the targets and below chance if it was incompatible, suggesting that these responses were based on partial stimulus analysis. For slow responses, accuracy was above chance for all arrays, suggesting that these responses were based on complete stimulus analysis. The occurrence and accuracy of fast responses could be predicted by examining motor potentials preceding the presentation of the array. Measures of the motor potentials in the period following the presentation of the array suggested that partial analysis of stimulus information could activate responses and that the level of response activation at the time of the EMG response was constant for trials with different response latencies. The data are discussed in terms of a response channel conception. 相似文献
97.
98.
Circular visual displays of 12 elements, consisting of A, H, M, and U, were presented to S. She responded with a lever movement in one direction if a given letter designated by a bar indicator was a member of the set A-U and in the opposite direction if it was from the other set. The principal experimental variables were the SOA by which the indicator preceded the display and whether the target letter was flanked by letters of the same or opposite set. The results indicated that the interference produced by noise letters is primarily on the response as opposed to the processing side. Also, there is a limit to the precision of selective attention in the visual field. The interference of opposite-set letters was inversely proportional to their distance from the target. 相似文献
99.
Robert L. Colegatef James E. Hoffman Charles W. Eriksen 《Attention, perception & psychophysics》1973,14(2):217-224
When a multiletter display is preceded by a bar designating one of the letters for report, reaction time (RT) to voice the indicated letter decreases. Previous research had indicated that the efficiency of this selective mechanism decreases as the number of display elements increases. Two experiments were conducted to determine whether the effect of display size could be eliminated when the indicator precedes the display at long intervals. Results indicated that the display size effect was maintained. The results could not be attributed to eye movements, but were interpreted in terms of a central encoding mechanism that is limited in its precision of localization and exclusion. 相似文献
100.
Charles W. Eriksen 《Attention, perception & psychophysics》1966,1(2):87-92
Two experiments tested six predictions derived from the assumptions underlying the luminance summation-contrast reduction explanation for certain instances of forward and backward masking effects. The predictions concerned the circumstances under which masking would occur and also that forward masking would be more extensive than backward masking under specified luminance arrangements. All six predictions were confirmed. 相似文献