ABSTRACT
Memory is the revival of experience, either as an image, or as a functional reinstatement of previous behavior. Every act of behavior modifies the psychophysical organism, and these modifications make their effects known in later action. The after-effects are of two kinds, dispositional and reproductive. The effect upon disposition is the more general and inclusive; for in undergoing behavior the organism becomes disposed not only to behave again in the same manner, but also to revive the phenomena which accompanied this behavior. Original propensities, which we have described as instinctive, become articulate, and new propensities are formed which become habits. The retention of these changes as more or less fixed ways of doing things and fixed ways of looking at things is the chief function of memory.
