Recent Issues. Chapter 6: Whatever Happened to Psychology as the Science of Behavior? Quote 5

” Gaps are inevitable in a behavioral account. Stimulus and response are separated in time and space, for example, and so are a reinforcement on one day and stronger behavior on the next. The gaps can be filled only with the instruments and methods of physiology. They cannot be filled by introspection, because there are no sensory nerves going to the right parts of the brain.” (p. 64)