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Recent research points to decreasing testosterone (T) levels as well as decreasing relationship quality during the transition to fatherhood, and it has been suggested that T reflects and affects motivation and behavior with respect to mating or paternal effort. Accordingly, we hypothesized that decreases in T are associated with decreasing relationship quality in new fathers.Thirty-seven fathers and...
Paternal care is associated with a reduced likelihood of engaging in competitive or mating behavior and an increased likelihood of providing protection when necessary. Over recent years, there has been increasing evidence to assume that the steroid testosterone (T) in men might reflect the degree of mating effort. In line with this, decreased T levels were shown in fathers compared to non-fathers...
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