Psychology gives us many hairsplitting definitions and distinctions between simple reproductive imagination and memory, but these distinctions are technical and as a rule perplexing to the average student. In truth, there is very little, if any, difference between simple reproductive imagination and memory, although when the imagination indulges in constructive activity a new feature enters into the process which is absent in pure memory operations. In simple reproductive imagination there is simply the formation of the mental image of some previous experience--the reproduction of a previous mental image. This differs very little from memory, except that the recalled image is clearer and stronger. In the same way in ordinary memory, in the manifestation of recollection, there is often the same clear, strong mental image that is produced in reproductive imagination. The two mental processes blend into each other so closely that it is practically impossible to draw the line between them, in spite of the technical differences urged by the psychologists. Of course the mere remembrance of a person who presents himself to one is nearer to pure memory than to imagination, for the process is that of recognition. But the memory or remembrance of the same person when he is absent from sight is practically that of reproductive imagination. Memory, in its stage of recognition, exists in the child mind before reproductive imagination is manifested. The latter, therefore, is regarded as a higher mental process. But still higher in the scale is that which is known as _constructive imagination_. This form of imagination appears at a later period of child mentation, and is regarded as a later evolution of mental processes of the race. Gordy makes the following distinction between the two phases of imagination: "The difference between reproductive imagination and constructive imagination is that the images resulting from reproductive imagination are _copies of past experience_, while those resulting from constructive imagination are not. * * * To learn whether any particular image, or combination of images, is the product of reproductive or constructive imagination, all we have to do is to learn whether or not it is a copy of a past experience. Our memories, of course, are defective, and we may be uncertain on that account; but apart from that, we need be in no doubt whatever."