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Finger lengths may indicate risk of schizophrenia in males

Date:
March 16, 2015
Source:
Wiley
Summary:
Research suggests that the ratio of the lengths of the index finger and the ring finger in males may be predictive of a variety of disorders related to disturbed hormonal balance. When the index finger is shorter than the ring finger, this results in a small 2D:4D ratio, pointing to a high exposure to testosterone in the uterus.
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Research suggests that the ratio of the lengths of the index finger and the ring finger in males may be predictive of a variety of disorders related to disturbed hormonal balance. When the index finger is shorter than the ring finger, this results in a small 2D:4D ratio, pointing to a high exposure to testosterone in the uterus.

In a new study of 103 male patients diagnosed with schizophrenia and 100 matched healthy male individuals, investigators found that the 2D:4D ratio may be an effective predictor of schizophrenia -- there were significant differences between schizophrenia and control groups concerning the ratio of the lengths of the second digit to the fourth digit, as well as its asymmetry, in both hands.

"Asymmetry index showed moderate discriminatory power and, therefore asymmetry index has a potential utility as a diagnostic test in determining the presence of schizophrenia," said Dr. Taner Oznur, co-author of the Clinical Anatomy study.


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Journal Reference:

  1. Abdullah Bolu, Taner Oznur, Sedat Develi, Murat Gulsun, Emre Aydemir, Mustafa Alper, Mehmet Toygar. The ratios of 2nd to 4th digit may be a predictor of schizophrenia in male patients. Clinical Anatomy, 2015; DOI: 10.1002/ca.22527

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Wiley. "Finger lengths may indicate risk of schizophrenia in males." ScienceDaily. ScienceDaily, 16 March 2015. <www.sciencedaily.com/releases/2015/03/150316134920.htm>.
Wiley. (2015, March 16). Finger lengths may indicate risk of schizophrenia in males. ScienceDaily. Retrieved February 22, 2017 from www.sciencedaily.com/releases/2015/03/150316134920.htm
Wiley. "Finger lengths may indicate risk of schizophrenia in males." ScienceDaily. www.sciencedaily.com/releases/2015/03/150316134920.htm (accessed February 22, 2017).