Winterstein distinguishes between genuine and spurious feelings, and describes the spurious feeling as depending upon the existence of the genuine one which comes from a deeper layer of the mind. The person himself does not necessarily realize that his feeling is spurious, if he does, it is because he senses the genuine feeling in the background of his mind. Often the spurious feeling and behaviour is unmasked by an element of extravagance and exaggeration, whereas the genuine one is felt to be natural and in accordance with all the actual or preconscious tendencies which belong to the feeling concerned. Spurious is not the same as pretended, since the intention to deceive is not necessarily connected with spurious feelings. The borderline between genuine and spurious feelings is not a sharp one. Further Winterstein discusses the problem in question with regard to the phenomenon of depersonalization and to the theories of other authors.