Instead, Dr Raihani and Ms McAuliffe decided to follow a new fashion in psychology and recruit their humanguineapigs through a system called Mechanical Turk.
Porton was established during the First World War for chemical weapons research, and it relied heavily on volunteers from the armed forces to become what has been described as humanguineapigs.
The lab, which counts Pfizer, GlaxoSmithKline and Merck among its clients, uses mice, rats and guineapigs to test compounds before beginning human trials.