English  |  正體中文  |  简体中文  |  Post-Print筆數 : 11 |  Items with full text/Total items : 88645/118187 (75%)
Visitors : 23496556      Online Users : 279
RC Version 6.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version
    政大機構典藏 > 理學院 > 心理學系 > 期刊論文 >  Item 140.119/75800
    Please use this identifier to cite or link to this item: http://nccur.lib.nccu.edu.tw/handle/140.119/75800

    Title: Are normal decision-makers sensitive to changes in value contrast under uncertainty? Evidence from the Iowa Gambling Task
    Authors: Lee, We-Kang
    Su, Y.-A.
    Song, T.-J.
    Chiu, Y.-C.
    Lin, C.-H.
    Contributors: 心理系
    Keywords: article;behavior change;behavior control;brain damage;confusion (uncertainty);controlled study;decision making;female;framing bias;human;human experiment;iowa gambling task;male;mental performance;monetary value contrast;normal human;psychologic test;task performance;ventromedial prefrontal cortex
    Date: 2014-07
    Issue Date: 2015-06-15 16:17:02 (UTC+8)
    Abstract: The Iowa Gambling Task (IGT) developed by Bechara et al. in 1994 is used to diagnose patients with Ventromedial Medial Prefrontal Cortex (VMPFC) lesions, and it has become a landmark in research on decision making. According to Bechara et al., the manipulation of progressive increments of monetary value can normalize the performance of patients with VMPFC lesions; thus, they developed a computerized version of the IGT. However, the empirical results showed that patients' performances did not improve as a result of this manipulation, which suggested that patients with VMPFC lesions performed myopically for future consequences. Using the original version of the IGT, some IGT studies have demonstrated that increments of monetary value significantly influence the performance of normal subjects in the IGT. However, other research has resulted in inconsistent findings. In this study, we used the computerized IGT (1X-IGT) and manipulated the value contrast of progressive increments (i.e., by designing the 10X-IGT, which contained 10 times of progressive increment) to investigate the influence of value contrast on the performance of normal subjects. The resulting empirical observations indicated that the value contrast (1X- vs. 10X-IGT) of the progressive increment had no effect on the performance of normal subjects. This study also provides a discussion of the issue of value in IGT-related studies. Moreover, we found the "prominent deck B phenomenon" in both versions of the IGT, which indicated that the normal subjects were guided mostly by the gain-loss frequency, rather than by the monetary value contrast. In sum, the behavioral performance of normal subjects demonstrated a low correlation with changes in monetary value, even in the 10X-IGT. © 2014 Lee et al.
    Relation: PLoS ONE, 9(7), 論文編號 e101878
    Data Type: article
    DOI 連結: http://dx.doi.org/10.1371/journal.pone.0101878
    DOI: 10.1371/journal.pone.0101878
    Appears in Collections:[心理學系] 期刊論文

    Files in This Item:

    File Description SizeFormat

    All items in 政大典藏 are protected by copyright, with all rights reserved.

    社群 sharing

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback