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Because the Wechsler tests included non-verbal items (known as performance scales) as well as verbal items for all test-takers, and because the 1960 form of Lewis Terman's Stanford–Binet Intelligence Scales was less carefully developed than previous versions, Form I of the WAIS surpassed the Stanford–Binet tests in popularity by the 1960s. [2]
The PSI is derived from the Coding and Symbol Search subtests. The Processing Speed subtests are as follows: The Processing Speed subtests are as follows: Coding (primary, FSIQ) – children under 8 mark rows of shapes with different lines according to a code, children over 8 transcribe a digit-symbol code using a key.
The Wechsler Preschool and Primary Scale of Intelligence (WPPSI) is an intelligence test designed for children ages 2 years 6 months to 7 years 7 months developed by David Wechsler in 1967. It is a descendant of the earlier Wechsler Adult Intelligence Scale and the Wechsler Intelligence Scale for Children tests. Since its original publication ...
The Secondary School Admission Test (SSAT) is an admission test administered by The Enrollment Management Association in the United States to students in grades 3–11 to provide a standardized measure that will help professionals in independent or private elementary, middle, and high schools to make decisions regarding student test taking ...
Professional Skills Institute (PSI) is a private for-profit technical school in Maumee, Ohio, US. PSI specializes in training for allied health professions and offers associate degree and diploma programs.
The British Columbia Postconcussion Symptom Inventory (BC-PSI), is a 16 item self-report inventory designed to measure both the frequency, and intensity of the ICD-10 criteria for Post concussion syndrome, which is a common occurrence in cases of mild traumatic brain injury.
In contrast, standard fixed tests almost always provide the best precision for test-takers of medium ability and increasingly poorer precision for test-takers with more extreme test scores. [citation needed] An adaptive test can typically be shortened by 50% and still maintain a higher level of precision than a fixed version. [2]
In 1942, Gertrude Schmeidler, a professor of psychology at City University of New York, used a questionnaire to discover the beliefs of test subjects concerning psi.She called those who thought psi existed "sheep", and those who did not think psi existed (or did not believe it could influence the tests) she called "goats".