Study Finds Sex Differences in the Brain. Does It Matter?

FOR Arman Raznahan, publishing research on sex differences is a fraught proposition. Now chief of the section on developmental neurogenomics at the National Institutes of Health, Raznahan learned early that searching for dissimilarities between men’s and women’s brains can have unintended effects.“I got my fingers burned when I first started,” Raznahan says. As a PhD student, … Continue reading Study Finds Sex Differences in the Brain. Does It Matter?

Cognitive and Neurological Aspects of Sex Chromosome Variations

Sex chromosome variations (SCV) are characterised by an atypical variation in the number or function of sex chromosomes. They are some of the most common genetic differences in human beings, and include 47 XXY; one in six hundred live births, 45X ; one in two thousand and 47 XYY; one in one thousand. However, by … Continue reading Cognitive and Neurological Aspects of Sex Chromosome Variations

Study Challenges Idea that Autism is Caused by an Overly Masculine Brain

Of the many proposed triggers for autism, one of the most controversial is the “extreme male brain” hypothesis. The idea posits that exposure to excess testosterone in the womb wires both men and women to have a hypermasculine view of the world, prioritizing stereotypically male behaviors like building machines over stereotypically female behaviors like empathizing … Continue reading Study Challenges Idea that Autism is Caused by an Overly Masculine Brain