"Ryder, Richard Hood Jack Dudley"@en . . . "Richard Hood Jack Dudley Ryder (born 1940) is a British writer, psychologist, and animal rights advocate.Ryder became known in the 1970s as a member of the Oxford Group, a group of intellectuals loosely centred on the University of Oxford who began to speak out against animal use, in particular factory farming and animal research."@en . . . . "Ryder, Richard D."@en . "1940Z"^^ . "British psychologist" . . . "Richard D. Ryder"@en . . .