One major reason for the unreliability of the rorschach inkblot test or other projective tests is the fact that: the test can only be used effectively with severely maladjusted individuals. the test cannot discriminate between those who may have suicidal and those who just suffer depression. the test does not allow for a truthful conversation between patient and therapist. psychologists often do not agree on how to score the results of the test. the test does not take perceptions of patients into account.