Congressman Roscoe Bartlett – a Republican – thinks it's time to ban scientific research on great apes:
The mere confinement in laboratory cages deprives chimpanzees of basic physical, social and emotional sustenance. Numerous peer-reviewed studies of chimpanzees in sanctuaries who had previously been confined in laboratories have documented behavioral symptoms associated with post-traumatic stress disorder. Chronic and traumatic stress harms chimpanzees’ health and compromises the results of experiments conducted on them. There is no question that chimpanzees experience pain, stress and social isolation in ways strikingly similar to the way humans do.
More on those similarities here.