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701.
Anne-Marie Bonnel Camille-Aim Possamaï Michel Schmitt 《The Quarterly Journal of Experimental Psychology Section A: Human Experimental Psychology》1987,39(4):757-776
Despite agreement among many attentional theories that processing resources are limited and allocated according to task demands, controversy continues about the locus of selectivity. Studies of spatial orientation of attention suggest an early effect. These results, however, can be explained instead by effects of decision processes. The present study avoids this difficulty by directly manipulating attention in a dual-task paradigm and by using SDT to dissociate sensory tuning from criterion shifts. Ten subjects judged whether two lines to the left of fixation were the same or different in length; they also judged two lines presented simultaneously to the right. In a given block of 64 trials, the subject was to allocate 80%, 50%, or 20% of attention to one pair of lines and the rest to the other. On every trial, the subject judged both pairs. Results showed that d' increased from 0.77 with 20% allocation to 1.69 with 80%, indicating that sensitivity is modulated by attentional instructions. These results are predicted quantitatively by Luce's sample-size model. 相似文献
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Mathieu Garcia Valérie Aubron Julie Salla Sandrine Hanne-Poujade Ali Teymoori Grégory Michel 《Aggressive behavior》2020,46(1):37-48
Rough-and-tumble play (RTP), also known as play fighting, is a common form of play frequently reported and studied by researchers. However, one important limitation of past research in the area of RTP has been the neglect of the adolescence period. Consequently, little is known about the function of adolescent RTP as well as about clinical characteristics of youth who engage in this activity after childhood. In a school-based sample of 1,771 middle school students (ages 9–16 years), the current study sought to address this gap by examining, via bivariate and multivariate logistic regression analyses, the potential cross-sectional associations of adolescent RTP with (a) selected demographic variables, (b) conduct problem symptoms, (c) substance use, and (d) risk-taking behaviors, including adjustment for several demographic confounders. Results indicated that adolescents reporting higher rates of conduct problem symptoms were more likely to report a recent participation in RTP. In addition, substance use (experimentation and current consumption of tobacco, alcohol, and marijuana) and risk behaviors assessed all were strongly associated with an increased likelihood of reporting an engagement in RTP. This finding suggests that participation in this activity probably implicates particular phenotypic characteristics including the propensity to engage in health-damaging behaviors. But the most profound issue raised by this research concerns the strong relationship between RTP and great levels of conduct disorder symptoms, suggesting a possible significant change in the functional significance of RTP in the adolescence period. 相似文献
704.
Catherine Thevenot Pierre Barrouillet Michel Fayol 《The Quarterly Journal of Experimental Psychology Section A: Human Experimental Psychology》2001,54(2):599-611
Many developmental models of arithmetic problem solving assume that any algorithmic solution of a given problem results in an association of the two operands and the answer in memory (Logan & Klapp, 1991; Siegler, 1996). In this experiment, adults had to perform either an operation or a comparison on the same pairs of two-digit numbers and then a recognition task. It is shown that unlike comparisons, the algorithmic solution of operations impairs the recognition of operands in adults. Thus, the postulate of a necessary and automatic storage of operands-answer associations in memory when young children solve additions by algorithmic strategies needs to be qualified. 相似文献
705.
Sebastian Wahl Christine Michel Sabina Pauen Stefanie Hoehl 《The British journal of developmental psychology》2013,31(2):212-230
This study investigates the effects of attention‐guiding stimuli on 4‐month‐old infants' object processing. In the human head condition, infants saw a person turning her head and eye gaze towards or away from objects. When presented with the objects again, infants showed increased attention in terms of longer looking time measured by eye tracking and an increased Nc amplitude measured by event‐related potentials (ERP) for the previously uncued objects versus the cued objects. This suggests that the uncued objects were previously processed less effectively and appeared more novel to the infants. In a second condition, a car instead of a human head turned towards or away from objects. Eye‐tracking results did not reveal any significant difference in infants' looking time. ERPs indicated only a marginally significant effect in late slow‐wave activity associated with memory encoding for the uncued objects. We conclude that human head orientation and gaze direction affect infants' object‐directed attention, whereas movement and orientation of a car have only limited influence on infants' object processing. 相似文献
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