Study was carried out by scientists at Rockefeller University in New York . The study involved a group of people who were given either the drug or placebo. If offered an odour , they would sometimes - but not always - investigate . Even the same individual did not always have the same response . It suggests that like humans , the worms may have a sense of 'free will '
Study was carried out by scientists at Rockefeller University in New York . They found worms would sometimes 'think ' for themselves . If offered an odour , they would sometimes - but not always - investigate . Even the same individual did not always have the same response . It suggests that like humans , the worms may have a sense of 'free will '