India, Jan. 7 -- Study reveals that genetic changes linked to autism and schizophrenia may have been favored by natural selection.

The same factors driving these changes may have contributed to the complexity of the human brain.

The conditions themselves don't offer evolutionary advantages but highlight trade-offs in brain evolution.

Certain genetic changes linked to autism spectrum disorders and schizophrenia may have been favoured by natural selection during human evolution, according to a new study. The findings offer fresh insight into how the human brain became so complex.

Published in the journal Molecular Biology and Evolution, the research showed that the evolutionary processes that shaped advanced human cognition may also hav...