When a vertebrate animal contracts the flexor muscles of a leg, it relaxes the extensor muscles of the same leg. Sherrington considered this evidence for the existence of ____

Fundamentally, Jung's theory may be best categorized as a(n)

a) philosophical one because he raised philosophical questions and suggested philosophical answers. b) historical one because it relied so heavily on Freud's theory. c) artistic one because he made use of sculpture and painting in his therapeutic sessions. d) scientific one because it is based on data from controlled experiments.

Hybrid designs combine the advantages of

A) correlational and longitudinal research methods. B) cross-sectional and correlational research methods. C) correlational and experimental research methods. D) cross-sectional and longitudinal research methods.