Psychological Methods in Psychiatric Diagnosis

The term "projective tests" is customarily applied to several of the sharpest and most valuable weapons in the clinical psychologist's armoury. Some of these?the Rorschach test, for example?are well known; others are not, and indeed some depend for their effectiveness upon their deceptive similarity to verbal intelligence tests. There are, nevertheless, essential differences between them and those methods of cognitive testing which were outlined in my first article.3 It is because of these differences that projective and cognitive tests can yield so much more diagnostically-valuable information when used to complement one another than when either technique is used alone.