Document Detail

Replicated nil associations of digit ratio (2D:4D) and absolute finger lengths with implicit and explicit measures of aggression.
MedLine Citation:
PMID:  19622317     Owner:  NLM     Status:  MEDLINE    
Preliminary evidence suggests that within-sex individual variation in the length ratio of the index finger to the ring finger (2D:4D), a putative marker of prenatal androgen levels, may be more strongly or consistently related to implicit measures (Implicit Association Test, IAT) than to corresponding explicit (self-report) measures of candidate personality traits. The underlying logic is that the non-introspective IAT may reflect earlier and inaccessible experiences, whereas introspective self-reports reflect more recent and necessarily accessible experiences. Associations of 2D:4D and absolute finger length (a marker of pubertal-adolescent androgen levels) with implicit versus explicit aggression measures (IAT vs. Buss-Perry Aggression Questionnaire and a feeling thermometer) were examined in two samples with identical procedures (Ns=244 and 233). Attesting to procedural validity and data typicality, several experiments of related research were replicated in both samples, including sex differences in 2D:4D and theory compliant interrelations among psychometric measures. However, no theory compliant, reliable, or replicable associations of 2D:4D or finger length with implicit or explicit aggression measures resulted. These nil findings cast doubt on hypothesized advantages of implicitly (over explicitly) measured target traits for 2D:4D research. More generally, they add to a growing number of replication failures in this area.
Martin Voracek; Stefan Stieger
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Psicothema     Volume:  21     ISSN:  0214-9915     ISO Abbreviation:  Psicothema     Publication Date:  2009 Aug 
Date Detail:
Created Date:  2009-07-22     Completed Date:  2009-11-16     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101189384     Medline TA:  Psicothema     Country:  Spain    
Other Details:
Languages:  eng     Pagination:  382-9     Citation Subset:  IM    
University of Vienna, Department of Psychological Research, School of Psychology, Vienna, Austria.
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MeSH Terms
Aggression / psychology*
Fingers / anatomy & histology*
Middle Aged
Young Adult

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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