“…Positive reinforcement training (PRT) techniques, used as a part of nonhuman primate behavioral management programs, can be beneficial for both the practicing humans and the animals. The use of PRT can 1) increase effective human-animal communication, 2) help gain the animals' trust by giving them increased control and choice, 3) enhance the animals' well-being [Bloomsmith et al, 1993, Laule et al, 1992, 4) facilitate husbandry practices [Bloomsmith et al, 1994;Laule & Desmond, 1990;Reichard et al, 1993], and 5) improve veterinary and research procedures [Desmond & Laule, 1987;Lambeth et al, 2000;Laule et al, 1996;Perlman et al, 2001Perlman et al, , 2003Perlman et al, , 2004Schapiro et al, 2005]. Training animals to voluntarily cooperate in management, husbandry, and veterinary procedures can also enhance health and safety by decreasing stress and reducing the risk of injury to the animals [Anzenberger & Gossweiler, 1993;Baker, 1991;Bunyak et al, 1982;Grant & Doudet, 2003;Knowles et al, 1995;Luttrell et al, 1994;Moseley & Davis, 1989;Phillipi-Falkenstein & Clarke, 1992;Priest, 1991;Reichard et al, 1993;Rogers et al, 1992;Vertein & Reinhardt, 1989].…”