Abstract：
:People can discriminate cheaters from cooperators by their appearance. However, successful cheater detection can be thwarted by a posed smile, which cheaters display with greater emotional intensity than cooperators. The present study investigated the underlying neural and cognitive mechanisms of a posed smile, which cheaters use to conceal their anti-social attitude, in terms of hemifacial asymmetries of emotional expressions. Raters (50 women and 50 men) performed trustworthiness judgments on composite faces of cheaters and cooperators, operationally defined by the number of deceptions in an economic game. The left-left composites of cheaters were judged to be more trustworthy than the right-right composites when the models posed a happy expression. This left-hemiface advantage for the happy expression was not observed for cooperators. In addition, the left-hemiface advantage of cheaters disappeared for the angry expression. These results suggest that cheaters used the left hemiface, which is connected to the emotional side of the brain (i.e., the right hemisphere), more effectively than the right hemiface to conceal their anti-social attitude.
journal_name
Brain Cognjournal_title
Brain and cognitionauthors
Okubo M,Ishikawa K,Kobayashi Adoi
10.1016/j.bandc.2013.04.004subject
Has Abstractpub_date
2013-07-01 00:00:00pages
181-6issue
2eissn
0278-2626issn
1090-2147pii
S0278-2626(13)00054-7journal_volume
82pub_type
杂志文章abstract：:We investigated the consequences of premature birth on the functional neuroanatomy of the dorsal stream of visual processing. fMRI was recorded while sixteen healthy participants, 8 (two men) adults (19 years 6 months old, SD 10 months) born premature (mean gestational age 30 weeks), referred to as Premas, and 8 (two ...
journal_title：Brain and cognition
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pub_type： 杂志文章
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pub_type： 杂志文章
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pub_type： 社论
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pub_type： 杂志文章
doi：10.1006/brcg.1993.1060
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pub_type： 杂志文章
doi：10.1016/0278-2626(90)90040-u
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pub_type： 临床试验,杂志文章
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journal_title：Brain and cognition
pub_type： 杂志文章
doi：10.1016/j.bandc.2007.07.001
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pub_type： 杂志文章
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pub_type： 杂志文章,随机对照试验
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