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151.
Can neural responses of a small group of individuals predict the behavior of large-scale populations? In this investigation, brain activations were recorded while smokers viewed three different television campaigns promoting the National Cancer Institute's telephone hotline to help smokers quit (1-800-QUIT-NOW). The smokers also provided self-report predictions of the campaigns' relative effectiveness. Population measures of the success of each campaign were computed by comparing call volume to 1-800-QUIT-NOW in the month before and the month after the launch of each campaign. This approach allowed us to directly compare the predictive value of self-reports with neural predictors of message effectiveness. Neural activity in a medial prefrontal region of interest, previously associated with individual behavior change, predicted the population response, whereas self-report judgments did not. This finding suggests a novel way of connecting neural signals to population responses that has not been previously demonstrated and provides information that may be difficult to obtain otherwise. 相似文献
152.
Studies have suggested that early postnatal lesions are associated with a greater likelihood of atypical speech representation than lesions acquired later in life. Comparison groups have been defined differently across studies, with age typically being treated as a dichotomous (i.e., early versus late lesion onset) rather than continuous variable. Thus, little is known about the age at which children become less likely to exhibit atypical representation following a brain insult. This study examined the likelihood of typical versus atypical speech representation in children with intractable epilepsy (n = 75). Age of seizure onset was treated as a continuous variable to examine whether there was a naturally occurring cut-off point after which the rate of atypical speech representation decreased. A much higher proportion of children with seizure onset prior to the fifth year showed atypical speech representation as compared to children whose seizures began after 5 years of age. 相似文献
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156.
The resource model of self‐control casts self‐control as a capacity that relies on some limited resource that exhausts with use. The model captured our imagination and brought much‐needed attention on an important yet neglected psychological construct. Despite its success, basic issues with the model remain. Here, we ask six questions: (i) Does self‐control really wane over time? (ii) Is ego depletion a form of mental fatigue? (iii) What is the resource that is depleted by ego depletion? (iv) How can changes in motivation, perception, and expectations replenish an exhausted resource? (v) Has the revised resource model unwittingly become a model about motivation? (vi) Do self‐control exercises increase self‐control? By providing some answers to these questions – including conducting a meta‐analysis of the self‐control training literature – we highlight how the resource model needs to be revised if not supplanted altogether. 相似文献
157.
L. Y. Saltzman R. Pat-Horenczyk M. Lombe A. Weltman Y. Ziv T. McNamara 《Anxiety, stress, and coping》2018,31(4):418-430
Background and Objectives: Posttraumatic stress disorder, a commonly researched mental health outcome associated with trauma, does not develop in the majority of survivors. More common trajectories of adaptation include resilience, and posttraumatic growth (PTG). The objectives of the current study were to: (1) describe posttrauma adaptation profiles in a sample of Israeli male military veterans (N?=?448); and (2) to explore the protective factors that promote constructive PTG within two profiles of posttrauma adaptation.Methods: The study used secondary data to estimate latent profile mixture models and a series of logistic regression analyses.Results: Demographic controls, combat related variables, endorsement of coping strategies, and reports of improvement in social support were not significant predictors of constructive growth in the resilient class. However, those in the struggling growth subset of the sample who reported improvement in perceived social support increased the odds of reaching constructive growth.Conclusion: These findings highlight the importance of tailored clinical interventions that account for more complex profiles of posttrauma adaptation; and further, provide evidence that adaptation takes place over time. Finally, these findings call for future research to continue to explore the quality of PTG and the contexts in which protective factors promote positive adaptation. 相似文献
158.
Meghan L. Meyer Elliot T. Berkman Johan C. Karremans Matthew D. Lieberman 《Cognition & emotion》2013,27(3):490-505
Although a great deal of research addresses the neural basis of deliberate and intentional emotion-regulation strategies, less attention has been paid to the neural mechanisms involved in implicit forms of emotion regulation. Behavioural research suggests that romantically involved participants implicitly derogate the attractiveness of alternative partners, and the present study sought to examine the neural basis of this effect. Romantically committed participants in the present study were scanned with functional magnetic resonance imaging (fMRI) while indicating whether they would consider each of a series of attractive (or unattractive) opposite-sex others as a hypothetical dating partner both while under cognitive load and no cognitive load. Successful derogation of attractive others during the no cognitive load compared to the cognitive load trials corresponded with increased activation in the ventrolateral prefrontal cortex (VLPFC) and posterior dorsomedial prefrontal cortex (pDMPFC), and decreased activation in the ventral striatum, a pattern similar to those reported in deliberate emotion-regulation studies. Activation in the VLPFC and pDMPFC was not significant in the cognitive load condition, indicating that while the derogation effect may be implicit, it nonetheless requires cognitive resources. Additionally, activation in the right VLPFC correlated with participants' level of relationship investment. These findings suggest that the RVLPFC may play a particularly important role in implicitly regulating the emotions that threaten the stability of a romantic relationship. 相似文献
159.
Kievit et al.'s target paper exemplifies a trend in recent years in psychology and neuroscience to focus on internal mental and neural processes without integrating actual behavior. We discuss the theoretical status of behavior in the context of their model, and present an extension of the model that explicitly includes behavior. Several theoretical and methodological issues relevant to integrating behavior into the model are considered, particularly the distinction between behavior as measured in the laboratory along with neural and psychological processes (proximal behavior) and behavior as measured in situ as part of ongoing daily experience (distal behavior). We conclude by describing several studies that integrate neural, psychological, and behavioral indicators and discuss how these kinds of studies can facilitate a better understanding of behavior and contribute to theory development. 相似文献
160.
Psychiatrist and Diagnostic and Statistical Manual of Mental Disorders, 4th edition (DSM-IV) text editor Michael First has criticized the addition of victim counts to criteria proposed by the Paraphilia Sub-Workgroup for inclusion in DSM-5 because they will increase false-positive diagnoses. Psychologist and Chair of the DSM-5 Paraphilia Sub-Workgroup, Ray Blanchard, responded by publishing a study of pedohebephiles and teleiophiles which seemed to show that victim counts could accurately identify pedohebephiles who were selected per self-report and phallometric testing. His analysis was flawed because it did not conform to conventional clinical practice and because he sampled groups at opposite ends of the clinical spectrum. In an analysis of his full sample, we found the false-positive rate for pedohebephilia at the recommended victim count selection points was indeed very large. Why? Because data analyses that eliminate intermediate data points will generate inflated estimates of correlation coefficients, base rates, and the discriminative capacity of predictor variables. This principle is also relevant for understanding the flaws in previous research that led Hanson and Bussiere to conclude that sexual recidivism was correlated with “sexual interest in children as measured by phallometric assessment.” The credibility of mental health professionals rests on the reliability of their research. Conducting, publishing, and citing research that reflects adequate sampling and cautious diagnostic theorizing are critical for preserving this credibility. Copyright © 2011 John Wiley & Sons, Ltd. 相似文献