Testosterone is neither the biological essence of manliness nor even the â?omale sex hormone.â? It doesnâ??t predict competitiveness or aggressiveness, strength or sex drive. Rebecca Jordan-Young and Katrina Karkazis pry testosterone loose from more than a century of misconceptions that undermine science while making social fables seem scientific.

Testosterone is neither the biological essence of manliness nor even the "male sex hormone." It doesn't predict competitiveness or aggressiveness, strength or sex drive. Here the authors pry testosterone loose from more than a century of misconceptions that undermine science while making social fables seem scientific.