Most neuropsychological tests in current use are based on traditional psychometric theory. The clinician conducts a clinical interview and may employ various psychometric tests. "Transferability" has been proposed as a qualitative substitute for psychometric validity. Soon after drawing conclusions about psychometric studies, Piaget started developing the clinical method of examination. Definition, operationalization and statistical methods are similar to the psychometric approach of general individual intelligence. Contemporary theories about intelligence can be divided into two classes, psychometric and cognitive. It is a parameter used in sociology, psychology, and other psychometric or behavioral sciences. Mathematical psychology is closely related to psychometric theory. Attitudes have also been studied extensively using psychometric approaches. The causal links between psychometric ability and social outcomes may be indirect. They also vary in terms of the extent and rigour of their psychometric validation. This requirement was later annulled and replaced with mandatory subjects, English, and psychometric tests. The Myers-Briggs typology has been the subject of criticism regarding its poor psychometric properties. Criterion-referenced testing was a major focus of psychometric research in the 1970s. There was also a strong belief in the value and accuracy of psychometric testing.