After short stints at various locations (including five years in private practice), Wechsler became chief psychologist at Bellevue Psychiatric Hospital in 1932, where he stayed until 1967. He died in 1981, his psychological tests already being highly respected.
The Wechsler scales introduced many novel concepts and breakthroughs to the intelligence testing movement. First, he did away with the quotient scores of older intelligence tests (the Q in "I.Q."). Instead, he assigned an arbitrary value of 100 to the mean intelligence and added or subtracted another 15 points for each standard deviation above or below the mean the subject was. Rejecting a concept of global intelligence (as was propagated by Charles Spearman), he divided the concept of intelligence into two main areas: verbal and performance (non-verbal) areas, each further subdivided and tested with a different subtest. These conceptualizations are still reflected in the most recent versions of the Wechsler scales.
The WAIS is today the most commonly administered psychological test (Kaplan & Sacuzzo, 2005). The tests are currently updated approximately every ten years to compensate for the Flynn effect.
DB Technology Celebrates 25 Years of Success and Innovation in Automated Information Management Software.(Report)
Mar 03, 2008; DB Technology, a recognized leader in automated information and reporting solutions, announced that it has reached 25 years in...