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283.
Coaster M Rogers BP Jones OD Viscusi WK Merkle KL Zald DH Gore JC 《Cognitive, affective & behavioral neuroscience》2011,11(4):494-507
Many human activities involve a risk of physical harm. However, not much is known about the specific brain regions involved
in decision making regarding these risks. To explore the neural correlates of risk perception for physical harms, 19 participants
took part in an event-related fMRI study while rating risky activities. The scenarios varied in level of potential harm (e.g.,
paralysis vs. stubbed toe), likelihood of injury (e.g., 1 chance in 100 vs. 1 chance in 1,000), and format (frequency vs.
probability). Networks of brain regions were responsive to different aspects of risk information. Cortical language- processing
areas, the middle temporal gyrus, and a region around the bed nucleus of stria terminalis responded more strongly to high-
harm conditions. Prefrontal areas, along with subcortical ventral striatum, responded preferentially to high- likelihood conditions.
Participants rated identical risks to be greater when information was presented in frequency format rather than probability
format. These findings indicate that risk assessments for physical harm engage a broad network of brain regions that are sensitive
to the severity of harm, the likelihood of risk, and the framing of risk information. 相似文献
284.
John E. Fisk Dean A. Marshall Paul Rogers Rosemary Stock 《Scandinavian journal of psychology》2019,60(5):405-420
Probability judgment is a vital part of many aspects of everyday life. In the present paper, we present a new theory of the way in which individuals produce probability estimates for joint events: conjunctive and disjunctive. We propose that a majority of individuals produce conjunctive (disjunctive) estimates by making a quasi‐random adjustment, positive or negative, from the less (more) likely component probability with the other component playing no obvious role. In two studies, we produce evidence supporting propositions that follow from our theory. First, the component probabilities do appear to play the distinct roles we propose in determining the joint event probabilities. Second, contrary to probability theory and other accounts of probability judgment, we show that the conjunctive‐less likely probability difference is unrelated to the more likely disjunctive probability difference (in normative theory these quantities are identical). In conclusion, while violating the norms of probability judgment, we argue that estimates produced in the manner we propose will be close enough to the normative values especially given the changing nature of the external environment and the incomplete nature of available information. 相似文献
285.
Rogers R Vitacco MJ Jackson RL Martin M Collins M Sewell KW 《Journal of personality assessment》2002,78(1):31-46
Psychopaths frequently con and manipulate others in an attempt to achieve their own objectives. In the current literature, correlational research has generally found that psychopathy has (a) an inverse relation with social desirability and (b) a positive relation with malingering. Although instructive, these correlational data do not address whether the assessment of psychopathy is vulnerable to specific response styles. This study examined 2 response styles among adolescent offenders in the context of pending adjudication: social desirability and social nonconformity. On 3 measures of psychopathy (i.e., Psychopathy Checklist: Youth Version, Psychopathy Screening Device, and Self-Report of Psychopathy-Second Edition), a simulation design was employed with a realistic scenario, incentives for successful deception, and appropriate manipulation checks. Results indicated moderate to large effect sizes for social desirability and large effect sizes for social nonconformity. The implications of these results for the clinical assessment of psychopathy are discussed. 相似文献
286.
Hibbard PB Bradshaw MF Langley K Rogers BJ 《Journal of experimental psychology. Human perception and performance》2002,28(2):469-476
Observers are more sensitive to variations in the depth of stereoscopic surfaces in a vertical than in a horizontal direction; however, there are large individual differences in this anisotropy. The authors measured discrimination thresholds for surfaces slanted about a vertical axis or inclined about a horizontal axis for 50 observers. Orientation and spatial frequency discrimination thresholds were also measured. For most observers, thresholds were lower for inclination than for slant and lower for orientation than for spatial frequency. There was a positive correlation between the 2 anisotropies, resulting from positive correlations between (a) orientation and inclination thresholds and (b) spatial frequency and slant thresholds. These results support the notion that surface inclination and slant perception is in part limited by the sensitivity of orientation and spatial frequency mechanisms. 相似文献
287.
Psychologists have standardized competency-to-stand-trial (CST) assessments through the development of specialized CST measures. However, their research has largely neglected the possibility that CST measures may be stymied by feigning mental disorders and concomitant impairment. The current study is the first systematic examination of (a) how feigned mental disorders may affect CST measures and (b) which scales are effective at identifying feigned cases. Bona fide patients (n = 65) were compared with suspected malingerers (n = 22) on 3 CST measures: the Georgia Court Competency Test (GCCT), the MacArthur Competence Assessment Tool--Criminal Adjudication, and the Evaluation of Competency to Stand Trial--Revised (ECST-R). Results indicated that these CST measures are vulnerable to feigning. The development of specialized GCCT and ECST-R scales yielded moderately effective screens for feigned mental disorders in the context of CST evaluations. 相似文献
288.
One hundred forty-nine inpatients within a maximum security psychiatric facility were assessed with the Psychopathy Checklist: Screening Version (PCL:SV; S. D. Hart, D. N. Cox, & R. D. Hare, 1995). Within the total sample, 68% had a psychotic disorder and 30% met criteria for psychopathy. Using confirmatory factor analysis, the authors tested the 2-factor PCL:SV model of psychopathy and recent 3- and 4-factor models. Results indicated good fit for each model, with the 4-factor model showing best overall fit. Structural equation modeling was used to determine which psychopathy factors predicted 6-month follow-up of inpatient aggression. The 2-, 3-, and 4-factor models, respectively, accounted for 16%.27%. and 3l% of the variance in aggression. 相似文献
289.
The safe and effective management of adolescent offenders is a top priority for inpatient forensic programs. Treatment successes were examined for adolescent offenders on four parameters, specifically hospital course, level of improvement, time to discharge, and rapidity of improvement. Hospital course was predicted primarily by the breadth of polysubstance abuse with modest but independent contributions by psychopathic characteristics, and aggressive conduct-disorder symptoms. An important finding for treatment was that level of improvement at discharge was only marginally affected by psychopathic traits. In addition, rapidity of improvement was predicted only by decreased polysubstance abuse. Approximately one-fourth of the adolescent offenders experienced a substantial decrease in psychopathic characteristics. This finding was unexpected because the generic treatment program did not target the core elements of psychopathy. Even in the absence of nontreatment controls, this diminution of psychopathic traits in 25% of adolescent offenders raises important questions about the temporal stability of these traits and their potential amenability to generic interventions. 相似文献
290.