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. Author manuscript; available in PMC: 2009 Sep 1.
Published in final edited form as: Horm Behav. 2008 Mar 25;54(3):359–364. doi: 10.1016/j.yhbeh.2008.03.008

Table 3.

Mean frequencies and durations of interactions with the plush and wheeled toys, sorted by sex

Frequency
 Duration (minutes)
Mean s.d. Mean s.d.
Plush Male 2.06 9.21 0.53 1.41
Female 7.97 10.48 1.49 3.81
Wheeled Male 9.77 8.86 4.76 7.59
Female 6.96 4.92 1.27 2.2