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A. Partner vs. Stranger huddling difference increases over the course of the test and is typically significant by three hours if not earlier. B. Preference score, which reflects relative huddling (% P huddling/total huddling) stabilizes early but does not tend to increase much over the course of the test. Data are from female prairie voles tested in peer PPTs with a long-term female cagemate (Lee et al., 2019); timeline analysis was performed in Beery and Shambaugh (2021).
