Edwin Ray Guthrie

Edwin Ray Guthrie (; January 9, 1886 – April 23, 1959), a behavioral psychologist, began his career in mathematics and philosophy in 1917. He spent most of his career at the University of Washington, where he was a full-time professor and later became an emeritus professor in psychology.

Guthrie is best known for his works regarding stimulus–response association, which has been variously described as one-trial theory, non-reinforcement, and contiguity learning.

He theorized: :"A combination of stimuli which has accompanied a movement, while on its recurrence, tend to be followed by that movement". Guthrie's works and theories were described as "simple" by his peers, referring to how he described complex ideas in simple terms. Critics of Guthrie have considered his teaching style defective, mistaking "incompleteness for simplicity". Provided by Wikipedia