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191.
In the present study, we introduce a novel, self-organized task-switching paradigm that can be used to study more directly the determinants of switching. Instead of instructing participants to randomly switch between tasks, as in the classic voluntary task-switching paradigm (Arrington & Logan, 2004), we instructed participants to optimize their task performance in a voluntary task-switching environment in which the stimulus associated with the previously selected task appeared in each trial after a delay. Importantly, the stimulus onset asynchrony (SOA) increased further with each additional repetition of this task, whereas the stimulus needed for a task switch was always immediately available. We conducted two experiments with different SOA increments (i.e., Exp. 1a = 50 ms, Exp. 1b = 33 ms) to see whether this procedure would induce switching behavior, and we explored how people trade off switch costs against the increasing availability of the stimulus needed for a task repetition. We observed that participants adapted their behavior to the different task environments (i.e., SOA increments) and that participants switched tasks when the SOA in task switches approximately matched the switch costs. Moreover, correlational analyses indicated relations between individual switch costs and individual switch rates across participants. Together, these results demonstrate that participants were sensitive to the increased availability of switch stimuli in deciding whether to switch or to repeat, which in turn demonstrates flexible adaptive task selection behavior. We suggest that performance limitations in task switching interact with the task environment to influence switching behavior. 相似文献
192.
A signal detection analysis assessed the extent to which forced confabulation results from a change in memory sensitivity
(d
a
), as well as response criterion (β). After viewing a crime video, participants answered 14 answerable and 6 unanswerable questions. Those in the voluntary guess condition had a “don’t know” response option; those in the forced guess condition did not. One week later, the same questions were answered using a recognition memory test that included each participant’s
initial responses. As was predicted, on both answerable and unanswerable questions, participants in the forced guess condition
had significantly lower response criteria than did those who voluntarily guessed. Furthermore, on both answerable and unanswerable
questions, d
a
scores were also significantly lower in the forced than in the voluntary guess condition. Thus, the forced confabulation
effect is a real memory effect above and beyond the effects of response bias; forcing eyewitnesses to guess or speculate can
actually change their memory. 相似文献
193.
194.
Rebecca M. Jones Jonathan D. Victor Mary M. Conte 《Attention, perception & psychophysics》2012,74(5):988-1000
Face and symmetry processing have common characteristics, and several lines of evidence suggest they interact. To characterize their relationship and possible interactions, in the present study we created a novel library of images in which symmetry and face-likeness were manipulated independently. Participants identified the target that was most symmetric among distractors of equal face-likeness (Experiment 1) and identified the target that was most face-like among distractors of equal symmetry (Experiment 2). In Experiment 1, we found that symmetry judgments improved when the stimuli were more face-like. In Experiment 2, we found a more complex interaction: Image symmetry had no effect on detecting frontally viewed faces, but worsened performance for nonfrontally viewed faces. There was no difference in performance for upright versus inverted images, suggesting that these interactions occurred on the parts-based level. In sum, when symmetry and face-likeness are independently manipulated, we find that each influences the perception of the other, but the nature of the interactions differs. 相似文献
195.
Scott S. Wiltermuth Victor M. Bennett Lamar Pierce 《Organizational behavior and human decision processes》2013
Although unethical behavior often benefits third-parties not directly complicit in the misconduct, not all beneficiaries welcome these ill-gotten benefits. We investigate whether actors consider the ethical preferences of potential beneficiaries or rely solely on their own ethical predispositions when making decisions that affect others. Three studies demonstrate that the perceived ethical preferences of these beneficiaries can substantially influence the likelihood that actors behave unethically on their behalves. These studies show that actors consider the ethical preferences of beneficiaries only when their own ethical disposition is outcome-based. 相似文献
196.
197.
Yaïr Pinto Ilja G. Sligte Kimron L. Shapiro Victor A. F. Lamme 《Psychonomic bulletin & review》2013,20(4):732-739
Fragile visual short-term memory (FM) is a recently discovered form of visual short-term memory. Evidence suggests that it provides rich and high-capacity storage, like iconic memory, yet it exists, without interference, almost as long as visual working memory. In the present study, we sought to unveil the functional underpinnings of this memory storage. We found that FM is only completely erased when the new visual scene appears at the same location and consists of the same objects as the to-be-recalled information. This result has two important implications: First, it shows that FM is an object- and location-specific store, and second, it suggests that FM might be used in everyday life when the presentation of visual information is appropriately designed. 相似文献
198.
Victor E. Loos 《Journal of constructivist psychology》2013,26(3):293-312
Many therapists report that working with couples is very difficult and stressful. In this article 1 offer a few evolving thoughts on working with couples, based on Kelly's Sociality corollary and the field of hermeneutic inquiry. The primary task of marital therapy is to work together with couples in coauthoring (or coconstructing) a story that (a) is specific to the concerns of each spouse, (b) is meaningful to the two of them as a couple, and (c) provides new options for effective action in the situation confronting them. This coauthoring process, if it is to be successful with couples, must address a number of related issues, including codefining the problem, connecting with the relevant system, codeveloping specific and workable goals, maintaining flexibility, and coconstructing alternatives. 相似文献
199.
Nicole M. Gatto Victor W. Henderson Jan A. St. John Carol McCleary Howard N. Hodis 《Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition》2013,20(5):627-641
ABSTRACT Objective: Few studies have addressed whether the metabolic syndrome (MetS) and its individual components are associated with cognitive function in middle-aged and older populations, as well as whether specific areas of cognition are more affected than others. We examined the cross-sectional association between MetS and six areas of cognitive function in healthy cognitively intact adults without diabetes (n?=?853, mean age 61 years) randomized in two intervention trials. Methods: The National Cholesterol Education Program (NCEP) criteria were used to identify subjects with MetS. Cognitive function was assessed with a neuropsychological battery. A principal components analysis was used to extract five uncorrelated factors interpreted to represent five areas of cognition, and a measure of global cognition was calculated. Results: MetS was weakly but non-significantly associated with lower verbal learning (β?=??.14 [SE(β)?=?0.09], p?=?.15). As the number of MetS criteria increased, scores on global cognition (p trend?=?.01), verbal learning (p trend?=?.06) and semantic memory (p trend?=?.04) decreased. Hypertension was the only MetS risk factor that was independently correlated with lower verbal learning (β?=??.17 [SE(β) =?0.08], p?=?.04), semantic memory (β?=??.26 [SE(β)?=?0.08], p?=?.001) and global cognition (β?=??.15 [SE(β)?=?0.07], p?=?.04). Conclusion: This study adds to the evidence of an association between MetS and lower cognitive function among healthy middle-aged and older adults without CVD and diabetes, as well as confirms the correlation between hypertension and lower cognition. 相似文献
200.
Effects of adult attachment style on the perception of and search for social support were examined. One hundred and fifty undergraduate students completed self-report scales tapping their attachment styles, the extent to which they perceive the availability of emotional and instrumental support from significant figures (father, mother, same-sex friend, opposite-sex friend, romantic partner), and the extent to which they look for instrumental and emotional assistance in times of need. Findings showed that secure persons perceived higher levels of emotional and instrumental support from the assessed figures and reported seeking more emotional and instrumental support than avoidant and ambivalent persons did. Results are discussed in the context of an attachment perspective of social support. 相似文献