Howard, D. T. (1927). The influence of evolutionary doctrine on psychology. Psychological Review, 34(4), 305-312.
http://dx.doi.org/10.1037/h0070903
All that is essentially new in modern psychology is a result, directly or indirectly, of Darwinian influences. Since mind, before Darwin, did not seem to fit into the mechanical scheme of things as then conceived, a dualism arose between mind and matter in which psychology became the science of mind as a correlative to physics as the science of matter. But dualism is difficult to reconcile with biological naturalism, hence the defection of the behaviorists and the apparent opposition of mental element and organic adjustment in a physical world. The evolutionary point of view ought to be able to avail itself of every good thing in the history of the science. By carrying the evolutionary conception through consistently, by giving a functional definition to content as well as act, the newer psychology finds itself in a position from which it can synthesize and utilize psychological data from all fields, past and present. (PsycINFO Database Record (c) 2016 APA, all rights reserved)