Tracking responses related to self-recognition: A frequency comparison of responses to mirrors, photographs, and videotapes by cotton top tamarins (Saguinus oedipus).
The frequency of responses cotton top tamarins (Saguinus oedipus) emitted indicative of self-recognition to a mirror was compared with the frequencies of responses emitted to digitized photographs of tamarins (Experiment 1) and to videotapes of real-time or prior tamarin action (Experiment 2). Results indicated more attentional responses toward the mirror in both studies, but behavioral […]
Observations on the Behavior of Gibbons (Hylobates leucogenys, H. gabriellae, and H. lar) in the Presence of Mirrors
Three captive gibbons ( Hylobates leucogenys, H. gabriellae , and H. lar ) were videotaped in the course of longitudinal exposure to mirrors introduced into their familiar cage or island housing situation. The gibbons, which differed in age, sex, species, and rearing condition, exhibited great individual difference in their behavioral reactions to mirrors, spanning from […]