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101.
Ester I. Klimkeit Jason B. Mattingley Dianne M. Sheppard Paul Lee John L. Bradshaw 《Child neuropsychology》2013,19(2):153-173
Attention and executive functions were investigated in medicated and unmedicated children with ADHD combined type using a novel selective reaching task. This task involved responding as rapidly as possible to a target while at times having to ignore a distractor. Results indicated that unmedicated children with ADHD showed slow and inaccurate responding. Slow responding reflected problems at the stage of movement preparation but not movement execution. An attentional impairment, rather than a motor planning problem per se, appeared to underlie the slow movement preparation. Inaccurate responding reflected problems with response inhibition and selective attention, impulsivity, set-shifting, and difficulties in maintaining vigilance. Although medicated children with ADHD did not show slow movement preparation, they did show some response inaccuracy, resulting especially from impulsive responding.These findings suggest that ADHD is characterized by slow motor preparation (but not motor execution), and deficits in selective attention, vigilance, and executive functions. Preliminary results suggest that stimulant medication may resolve some of these motor, attentional and executive function deficits. 相似文献
102.
Sharon J. Male Dianne M. Sheppard John L. Bradshaw 《Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition》2013,20(5):589-606
ABSTRACT The Attentional Blink (AB) refers to a decrease in the chance of detecting a second target in a rapid sequence of items if it occurs within approximately 500 ms of a first target. In this study the efficiency of establishing and switching cognitive set for older adults (mean age 71.62 years) relative to young adults (mean age 21.33 years) was investigated. Three increasingly complex conditions of the AB paradigm were employed, each of which required participants to identify a coloured square (T1) and a letter (T2) within a stream of distracters. Accuracy of identification of T2 decreased for both young and older adults as complexity increased. In Condition 1, selection criteria for both targets were fully specified, while T1 acted as a direct cue to the selection criteria for T2 in Condition 2. Older participants took longer to establish cognitive set in this condition. Condition 3 contained an added requirement to activate a pre-determined rule for T2 selection. The basic requirement to establish cognitive set ‘online’, however, seemed to disguise any additional potential problems associated with the additional load required for Condition 3 for older adults. Younger adults were cognitively slowed in Condition 3 relative to Condition 2, suggesting that it is the need to use an internally generated cue to switch cognitive set that requires extra time for them. The significantly larger AB demonstrated by the older participants indicated an impaired ability to rapidly establish cognitive set. The findings are discussed in light of the current literature on cognitive aging, the AB and task switching. 相似文献
103.
Dianne Elise Ph.D. 《Psychoanalytic Dialogues》2013,23(4):499-531
In this paper, it is argued that males as well as females have an early experience in relation to the nursing mother of being receptive to bodily and psychic penetration. Males tend to lose access to this experience and may come to fear penetration as a threat such that a masculine sense of self is felt to be dependent on an impermeable psychic boundary that is not to be penetrated. Instead, phallicism as a fortress of emotional self-sufficiency—which the author labels the citadel complex—becomes the matrix of a subjective sense of masculinity. The multiple and combined forces of bodily development, the establishment of gender identity, and the process of separation-individuation are examined for their role in this process. A critique of the Lacanian concept of paternal law suggests that the “law of the father” can be interpreted as a law regulating penetration. Paternal law can be viewed as a code for the establishment of an impenetrable masculinity whereby entry into an adult male psyche becomes unthinkable, “unlawful.” An impermeable bodily and psychic boundary—the ability to penetrate without the ability to be penetrated—collapses a necessary dialectical tension that may affect men's experience of sex and of love and that may shape and limit their desire. 相似文献
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Two experiments investigated effects of active processing of risk information on participants' understanding and judgments. It was hypothesized that more active processing would lead to better understanding and differences in affective judgments (e.g. increased satisfaction and reduced perceived risk to health). In both experiments participants were given a written scenario about their being prescribed a fictitious medication. This medication was said to cause side effects in 2% of people who took it. Before answering a series of written questions, participants in the active conditions of both experiments were asked to carry out a reflective task (portraying the size of risk on a bar chart in Experiment 1 and answering a reflective question in Experiment 2). The results showed that active participants rated the likelihood of experiencing possible side effects significantly lower than passive participants (Experiment 1), and that active participants were significantly more satisfied with the information and judged perceived risk to health from taking the medication significantly lower than passive participants (Experiment 2). In both experiments, active participants were significantly more correct in their probability and frequency estimates. The studies demonstrate that active processing of risk information leads to improved understanding of the information given. This has important implications for risk communication. In the context of health, better understanding should lead to improved decision‐making and health outcomes. Copyright © 2004 John Wiley & Sons, Ltd. 相似文献
106.
Two experiments investigated the influence of implicit memory on consumer choice for brands with varying levels of familiarity. Priming was measured using a consideration‐choice task, developed by Coates, Butler and Berry ( 2004 ). Experiment 1 employed a coupon‐rating task at encoding that required participants to meaningfully process individual brand names, to assess whether priming could affect participants' final (preferred) choices for familiar brands. Experiment 2 used this same method to assess the impact of implicit memory on consideration and choice for unknown and leader brands, presented in conjunction with familiar competitors. Significant priming was obtained in both experiments, and was shown to directly influence final choice in the case of familiar and highly familiar leader brands. Moreover, it was shown that a single prior exposure could lead participants to consider buying an unknown, and indeed fictitious, brand. Copyright © 2006 John Wiley & Sons, Ltd. 相似文献
107.
Terry Horgan 《Synthese》2008,160(2):155-159
I maintain, in defending “thirdism,” that Sleeping Beauty should do Bayesian updating after assigning the “preliminary probability”
1/4 to the statement S: “Today is Tuesday and the coin flip is heads.” (This preliminary probability obtains relative to a
specific proper subset I of her available information.) Pust objects that her preliminary probability for S is really zero,
because she could not be in an epistemic situation in which S is true. I reply that the impossibility of being in such an
epistemic situation is irrelevant, because relative to I, statement S nonetheless has degree of evidential support 1/4. 相似文献
108.
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110.
Three experiments investigated the influence of implicit memory for familiar brand names on consumer choice. Priming was measured using modified preference judgment tasks that comprised both brand consideration and choice components. Experiment 1 used a ‘complex choice task’ where consideration and choice stages were characterized as acting in sequence. Experiment 2 explored a different formulation whereby consideration and choice were assumed to act in parallel. Both experiments demonstrated that priming had an influence on brand consideration but not on final or preferred choice. Finally, Experiment 3 replicated and extended these findings under more realistic conditions where participants actually received some of the products that they selected. Overall, the experiments suggested that for many decisions involving the consideration of familiar brands prior to choice, previous exposure to brand names can increase the likelihood that they will enter the consumers' consideration set. However, the advantage does not appear to extend to choice itself. Copyright © 2004 John Wiley & Sons, Ltd. 相似文献