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The Physicians Committee



Chimps Used in Experiments Develop Psychological Disorders

chimpChimpanzees are humankind’s closest relatives. They share much of our DNA and, like us, have complex social relationships and suffer physical and mental pain. PCRM scientists recently confirmed that many chimps formerly used in experimental research display behaviors very similar to the signs of post-traumatic stress disorder, depression, anxiety, and obsessive-compulsive disorder commonly seen in traumatized humans. 

PCRM director of research policy Hope Ferdowsian, M.D., M.P.H, and colleagues conducted an observational study involving 116 chimpanzees previously held in experimental laboratories who now reside at Chimp Haven sanctuary in Louisiana. Many chimps displayed symptoms that overlap with psychiatric disorders, such as repetitive and ritualistic acts, social withdrawal, lack of interest, irritability, agitation, increased arousal, and avoidance. The study results will be presented at the International Primatological Society in Scotland this August.

Dr. Ferdowsian was inspired to conduct this study by her work with human torture survivors. She found significant similarities in the ways that humans and nonhuman animals respond to trauma. Like humans, other animals are capable of experiencing tremendous emotional and mental anguish in addition to physical pain. Dr. Ferdowsian notes that many people have rationalized the use of animals in experimental research by citing their similarities to humans. “However,” she adds, “it is precisely the common potential for mental and physical suffering that makes it an ethical dilemma.”

“No one doubts that confining and experimenting on unconsenting humans is wrong,” Dr. Ferdowsian said. “But humans are not alone in their capacity to feel terror and helplessness and to carry the consequences of abuse with them for many years.”

The Chimp Haven study served as an introduction for Dr. Ferdowsian to her new role at PCRM as director of research policy for PCRM. As director, she leads PCRM’s scientific and policy efforts promoting alternatives to animal experimentation and the alleviation of suffering.

Dr. Ferdowsian will also continue as associate director for the Washington Center for Clinical Research, which conducts clinical research focusing on the role of diet in health promotion and disease prevention and management.



 

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