Comparative behavior of primates. I. Delayed reaction tests on primates from the lemur to the orang-outan.
Using both the direct and indirect method, the authors tested the delayed-reaction ability of 2 anthropoid apes (an orang-utan and a white-handed gibbon), 19 old-world monkeys, 2 new-world monkeys, and 1 lemur. The animals were tested in their cages in the zoo. Delays of 0, 5, 15, 30, 60, 120, 180, and over 180 seconds […]
Development of a partner preference test that differentiates between established pair bonds and other relationships in socially monogamous titi monkeys (Callicebus cupreus)
Partner preference, or the selective social preference for a pair mate, is a key behavioral indicator of social monogamy. Standardized partner preference testing has been used extensively in rodents but a single test has not been standardized for primates. The goal of this study was to develop a partner preference test with socially monogamous titi […]