Confidential Psychological Report for: Spencer Page 1
TEST RESULTS AND INTERPRETATION (see attached appendix for scores)
General Intellectual Ability
Date Completed: 09/28/2004
1. Reynolds Intellectual Assessment Scales (RIAS)
Spencer’s general intellectual ability was evaluated using the Reynolds Intellectual Assessment
Scales (RIAS), an individually administered, norm referenced test that measures general
intellectual ability, verbal intelligence, nonverbal intelligence, and memory. General intellectual
ability refers to the ability to reason by drawing a logical inference or natural consequence
based on the grounds of logic. Verbal intelligence is the ability to infer relationships and apply
knowledge to problem solving, using words, and following the system of rules associated with a
language, including language comprehension skills. Nonverbal intelligence refers to the ability
to perceive, manipulate, or transform accurately images of spatial patterns into other visual
arrangements. Memory is the ability to attend to a stimulus, register the stimulus in immediate
memory, and then recall or recognize the stimulus.
Spencer earned scores on the RIAS that ranged from Moderately Below Average to
Significantly Below Average, which indicates the presence of clinically significant impairments
involving his general intellectual ability, verbal intelligence, nonverbal intelligence, and memory.
He earned a Composite Intelligence Index standard score (CIX) of 66, which falls in the
Significantly Below Average range and at the 1st percentile. This indicates that Spencer
performed as well as or better than one percent of children his age who were included in the
RIAS standardization sample. There is a 95% probability that Spencer’s true CIX score falls in
the range between 62 and 73. Spencer earned a Verbal Intelligence Index standard score (VIX)
of 66 which falls in the Significantly Below Average range (1st percentile; 95% confidence range
= 62 to 73) and a Nonverbal Intelligence Index standard score (NIX) of 75 which falls in the
Moderately Below Average range (5th percentile; 95% confidence range = 70 to 82). The 11
point difference between Spencer’s VIX and NIX occurred in 42.6% of the standardization
sample. Though this difference is statistically significant, it does not reflect a meaningful
difference between his verbal and nonverbal abilities. Spencer earned a Composite Memory
Index standard score (CMX) of 75 (5th percentile, 95% confidence range = 70 to 82), which falls
in the Moderately Below Average range.
Spencer is a 9-year-old male who was referred for evaluation by his parents. He has a history
of developmental delay and tuberous sclerosis. Previous psychological evaluations have
revealed low performance on IQ tests. His teachers and parents both reported a decline in all
areas of academic performance. Results from this evaluation revealed clinically significant
deficits in general intellectual ability, verbal intelligence, nonverbal intelligence, and memory that
will significantly impair his ability to learn new information as efficiently as his same age peers.
These deficits are consistent with a diagnosis of Mild Mental Retardation, though additional
assessments are necessary in the areas of social skills and adaptive behavior to establish this
diagnosis. A comprehensive assessment of Spencer’s academic skills is recommended to
determine his functional level of instruction within the school curriculum.