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. Author manuscript; available in PMC: 2010 Oct 1.
Published in final edited form as: Horm Behav. 2009 Aug 5;56(4):436–443. doi: 10.1016/j.yhbeh.2009.07.012

Figure 2.

Figure 2

Mean frequency scores per observation in parentally experienced fathers for their infant directed behaviors under three treatments: lowered prolactin (D2 agonist), nontreated control, elevated prolactin (human recombinant). Males showed no differences in behavioral frequencies between treatments for their family effort behaviors or percent carrying effort in the family. Males did show significant differences between treatments for their infant responsivenss behaviors, * = p<0.05.