WAIS-IV correct answers The Wechsler Adult Intelligence Scale Fourth Edition.
Verbal Comprehension Index (VMI) correct answers An individual's ability to understand, use,
and think with spoken language. Demonstrates the breadth and depth of knowledge acquired
from one's environment (crystalized knowledge). Measures the retrieval from long-term memory
of such information.
Includes:
Similarities
Vocabulary
Information
Comprehension (supp.)
Perceptual Reasoning Index (PRI) correct answers Reflects an individual's ability to accurately
interpret, organize, and think with visual information. Measures nonverbal reasoning sills and
taps into thinking that is more fluid and requires visual perceptual abilities.
Includes:
Block Design
Matrix Reasoning
Visual Puzzles
Figure Weights (supp.)
Picture Completion (supp.)
Working Memory Index (WMI) correct answers An individual's ability to take in and hold
information in immediate awareness and then perform a mental operation on that information.
Also measures the mental manipulation of number operations.
Includes:
Digit Span
Airthmetic
Letter-Number Sequencing (supp.)
Processing Speed Index (PSI) correct answers Ability to process simple or routine visual
information quickly and efficiently. Measures visual and motor speed.
Includes:
Symbol Search
Coding
Cancellation (supp.)
Similarities correct answers Finding similarities between 2 words. Measures abstract thinking
and ability to form concepts.
Vocabulary correct answers Measures abstract thinking and long-term memory.
Information correct answers Measures factual knowledge and info you have retained.
, Block Design correct answers Measures non-verbal reasoning, analysis and synthesis, and motor
skills
Matrix Reasoning correct answers Measures non-verbal reasoning and analogical visual-
perceptual reasoning
Visual Puzzles correct answers Measures mental transformation skills
Arithmetic correct answers Measures numerical reasoning ability
Figure Weights correct answers Perform quantitative tasks using inductive and deductive logic
Picture Completion correct answers Visual-perceptual ability, distinguish from essential and
non-essential information
Core Subtests correct answers Block design, similarities, arithmetic, symbol search, coding,
information, matrix reasoning, visual puzzles, digit span, vocabulary
Supplemental Subtests correct answers Cancellation, figure weights, picture completion,
comprehension, letter number sequencing
Full Scale Intelligence Quotient (FSIQ) correct answers Global measure of current level of
cognitive ability. Most reliable and valid. A composite score of the 4 primary indexes on the
WAIS-IV
Cattell-Horn-Carroll (CHC) Theory correct answers The 5-factor model developed by Tim
Keith. The 15 subtests load into 5 separate factors, which load into the General factor (g).
Discontinue Rule correct answers Discontinue administration after a certain number of 0's in a
row
Reverse Rule correct answers If client gets a 0 on one of the first 2 items, go in reverse order
until they get 2 correct in order. If the discontinue rule is met after reversing, continue to reverse
in order to determine their floor score.
Base Rates correct answers The cumulative frequency of discrepancies among the WAIS-IV
scores in the normative sample
General Ability Index (GAI) correct answers Composite score of the VMI and PRI. Used when
the FSIQ is not interpretable. Calculated by summing the scaled scores of VMI and PRI subtests.
Cognitive Proficiency Index (CPI) correct answers Composite score of WMI and PSI. Calculated
by summing the scaled scores of the WMI and PSI.
Sociocultural Factors correct answers SES accounts for more variance among scores than
ethnicity. WAIS-IV is not appropriate for African American children in school settings.