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A new study found that men show shifts in behavior from mating-oriented to parent-oriented while their partners’ pregnancy develops. These changes are determined by changes in testosterone levels across pregnancy and hormonal linkage with their partner。 一项新的研究发现，在伴侣怀孕时，男性的行为会从交配导向型转变为家长导向型。决定这一转变的是伴侣怀孕期间男性睾丸素水平的变化，以及他们与伴侣之间的荷尔蒙联动。 It’s almost hard to imagine that every caring dad was once a skirt-chasing ball of hormones — but it’s true. Somewhere along their transition to parenthood, biology puts a stop to men’s carefree days of sowing wild oats and turns their attention towards nurturing children. This is a very solid strategy from an evolutionary point of view, but we didn’t know exactly how it happened. 难以想象每个慈爱的爸爸都曾是一团追逐女性的荷尔蒙——但这是真的。在转变为人父的过程中，生物机制使男性结束了逍遥自在、四处播种的日子，并将注意力转到养育孩子上。从进化的角度来看，这是一个非常可靠的战略，但我们并不确切知道它是如何发生的。 | 
