What was David Weschlers major contributions to psychology?

David Wechsler made significant contributions to psychology by developing intelligence tests such as the Wechsler Adult Intelligence Scale (WAIS) and the Wechsler Intelligence Scale for Children (WISC). These tests revolutionized the field by providing a comprehensive assessment of cognitive abilities beyond just a single IQ score. Wechsler's work helped expand our understanding of human intelligence and how it can be measured in a more comprehensive and nuanced way.