ptgatsby
Well-known member
- Joined
- Apr 24, 2007
- Messages
- 4,476
- MBTI Type
- ISTP
My little brain was firing at all cylinders -- even "Gandalf" appeared in my list.
Mine too...

My little brain was firing at all cylinders -- even "Gandalf" appeared in my list.
Edit: also, can someone explain the difference between teh 3D shapes and the angles parts of your brain? I noticed Cascademn and I both pwned the angles (i know which one i messed up, too; i knew as i was clicking it it was wrong) and then sorta sucked on the 3D shape rotation. and pt was backwards to us.
for the 3D shape reasoning, i don't consider myself very visual. but what brain part is examining the angles? how is that different?
I don't have the answer to your question, but....![]()
I'd be curious to hear it. But no pressure
![]()
Seriously, maybe making it another topic (rather than cluttering this one up)? Or maybe it still fits here?
Dunno, but it'd be interesting.
Typical female 2nd-4th finger length (2D:4D) ratios in male-to-female transsexuals--possible implications for prenatal androgen exposure
Harald J. SchneiderCorresponding Author Contact Information, E-mail The Corresponding Author, Johanna Pickel and Gunter K. Stalla
Clinical Neuroendocrinology Group, Max Planck Institute of Psychiatry, Kraepelinstrasse 10, 80804 Munich, Germany
Received 26 April 2005; revised 25 July 2005; accepted 26 July 2005. Available online 2 September 2005.
Prenatal exposure to androgens has been implicated in transsexualism but the etiology of the condition remains unclear. The ratio of the 2nd to the 4th (2D:4D) digit lengths has been suggested to be negatively correlated to prenatal androgen exposure. We wanted to assess differences in 2D:4D ratio between transsexuals and controls.
Sixty-three male-to-female transsexuals (MFT), 43 female-to-male transsexuals (FMT), and 65 female and 58 male controls were included in the study. Photocopies of the palms and digits of the hands were taken of all subjects and 2D:4D ratios were measured, according to standard published procedures.
Comparison between right-handed individuals revealed that the right-hand 2D:4D in MFT is higher than in control males but similar to that observed in control females. In FMT we found no differences in 2D:4D relative to control females. Our findings support a biological etiology of male-to-female transsexualism, implicating decreased prenatal androgen exposure in MFT. We have found no indication of a role of prenatal hormone exposure in female-to-male transsexualism.
Psychoneuroendocrinology
Volume 31, Issue 2, February 2006, Pages 265-269