Zhu, Yi-Kang Li, Chun-Bo Jin, Jin Wang, Ji-Jun Lachmann, Bernd Sariyska, Rayna and Montag, Christian 2014. The 2D:4D ratio of the hand and schizotypal personality traits in schizophrenia patients and healthy control persons. Asian Journal of Psychiatry, Vol. 9, p. 67.
Teatero, Missy L. and Netley, Charles 2013. A Critical Review of the Research on the Extreme Male Brain Theory and Digit Ratio (2D:4D). Journal of Autism and Developmental Disorders, Vol. 43, Issue. 11, p. 2664.
JAMES, WILLIAM H 2012. A potential explanation of some established major risk factors for autism. Developmental Medicine & Child Neurology, Vol. 54, Issue. 4, p. 301.
Bloom, Michael S. Houston, Allison S. Mills, James L. Molloy, Cynthia A. and Hediger, Mary L. 2010. Finger bone immaturity and 2D:4D ratio measurement error in the assessment of the hyperandrogenic hypothesis for the etiology of autism spectrum disorders. Physiology & Behavior, Vol. 100, Issue. 3, p. 221.
Collinson, Simon Lowes Lim, Matthew Chaw, Jia Hui Verma, Swapna Sim, Kang Rapisarda, Attilio and Chong, Siow Ann 2010. Increased ratio of 2nd to 4th digit (2D:4D) in schizophrenia. Psychiatry Research, Vol. 176, Issue. 1, p. 8.
Ferraro, B. Wilder, F.V. and Leaverton, P.E. 2010. Site specific osteoarthritis and the index to ring finger length ratio. Osteoarthritis and Cartilage, Vol. 18, Issue. 3, p. 354.
Gooding, Diane Carol Johnson, Madeline and Peterman, Joel Stephen 2010. Schizotypy and altered digit ratios: A second look. Psychiatry Research, Vol. 178, Issue. 1, p. 73.
Martel, Michelle M. 2009. Conscientiousness as a mediator of the association between masculinized finger-length ratios and attention-deficit/hyperactivity disorder (ADHD). Journal of Child Psychology and Psychiatry, Vol. 50, Issue. 7, p. 790.
Voracek, Martin 2009. Who wants to believe? Associations between digit ratio (2D:4D) and paranormal and superstitious beliefs. Personality and Individual Differences, Vol. 47, Issue. 2, p. 105.
Voracek, Martin and Loibl, Lisa Mariella 2009. SCIENTOMETRIC ANALYSIS AND BIBLIOGRAPHY OF DIGIT RATIO (2D:4D) RESEARCH, 1998-20081,2. Psychological Reports, Vol. 104, Issue. 3, p. 922.
VORACEK, MARTIN 2009. LACK OF ASSOCIATION BETWEEN DIGIT RATIO (2D:4D) AND ASSERTIVENESS: REPLICATION IN A LARGE SAMPLE1. Perceptual and Motor Skills, Vol. 109, Issue. 3, p. 757.
Augmenting and supplementing the arguments of Crespi & Badcock (C&B), I show that digit ratio (2D:4D), a putative marker of prenatal androgen action, indeed appears differentially altered in autism-spectrum disorders (lower/masculinized) versus schizophrenic-spectrum disorders (higher/feminized). Consistent with C&B's framework, some evidence (substantial heritability, assortative mating, sex-specific familial transmission) points to possible sex chromosome and imprinted genes effects on 2D:4D expression.
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