Any form of behaviourism coming after that of the founding father, the US psychologist John B(roadus) Watson (1878–1958), the most influential being that of the US psychologist B(urrhus) F(rederic) Skinner (1904–90). Most neobehaviourists, while agreeing with Watson that psychology should be restricted to the study of overt behaviour, have accepted the existence of hidden psychological processes that can be inferred from behaviour. US neobehaviorism. neobehaviourist or neobehaviorist adj. n. (Of or relating to) one who advocates or practises neobehaviourism.