Assessment by Ian Stuart

“Julian Knight - The Hoddle St Massacre” 

Assessment by Ian Stuart

Assessment by Ian Stuart

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The following is the official report regarding the neuropsychological testing of Julian Knight by Neuroppsychologist Mr Ian Stuart. This report was drafted by Mr Stuart on the 23 rd February 1988, and relates to the formal neuropsychological testing of Knight with the Wechsler Adult Intelligence Scale - Revised (WAIS-R), on the 12 th and 19 th November 1987 in Pentridge Prison's H Division. The results of this testing were submitted as evidence at Knight's plea in the Supreme Court.

REPORT

Upon formal testing with the WAIS-R Mr Knight obtained a verbal IQ of 124 and a performance IQ of 132 giving a full scale of 132.

Individual sub-test scaled scores are given below:

 

VERBAL SCALE

PERFORMANCE SCALE

Information

12

Picture Completion

14

Digit Span

8

Picture Arrangement

12

Vocabulary

14

Block Design

14

Arithmetic

10

Object Assembly

16

Comprehension

16

Digit Symbol

12

Similarities

14

Despite some variability the scaled scores show a reasonable agreement, with a significant lowering on the Digit Span and Arithmetic sub-tests. The lowered digit span suggests some level of anxiety in the test situation. Reading, writing and calculations were intact. There was no dermal alexia and no impairment of motor co-ordination.

Memory testing on the WMS [Wechsler Memory Scale] Form I resulted in a memory quotient of 124, a figure in keeping with Mr Knight's IQ of 132 on the WAIS-R. There was no evidence of impairment on tests of auditory-verbal or visuo-spatial recall.

There was no evidence of frontal lobe dysfunction on any of the tests given. Similarities and Block Design were intact on the WAIS-R. Concept formation was intact on the colour form sorting test with no evidence of pattern formation. He scored a total of 37 words on a test of controlled word fluency (F=14, A=11, S=12), which is lowered in relation to his intelligence. The Austin Maze presented no difficulties. He reached criterion in 8 trials with no frontal lobe signs. There was no evidence of rule-breaking, no impulsiveness and no difficulty in turning away from the goal. Porteus Maze was completed without difficulty.

Conclusions:

Julian Knight is a 19-year-old young man who has performed well on formal testing obtaining an IQ of 132 on the WAIS-R. This places him in the Very Superior range on the Wechsler classifications.

There was no evidence of a frontal lobe syndrome on the tests given. There was no planning difficulties on the Porteus Maze and Austin Maze and no signs of impulsive behaviour were observed on those tests. Word fluency, concept formation and visuo-spatial analysis were all intact.

There was no evidence of a memory disorder on the WMS. Recall of auditory-verbal and visuo-spatial material were intact suggesting that from a memory point of view there was no disorder of temporal lobe functioning.

It is concluded that on the tests given, there is no evidence of cognitive impairment that would suggest the presence of organic brain dysfunction.

Mr Ian StuartConsultant Neuropsychologist
BA (Hons), MA

Neuro-Psychiatric Centre
Mont Park Psychiatric HospitalMont Park Vic 3085
Tel: (03) 9945 0211

INTELLIGENCE CLASSIFICATIONS

 

IQ

Classification

% of Population

130+

Very Superior

2.2

120-129

Superior

6.7

110-119

High Average

16.1

90-109

Average

50.0

80-89

Low Average

16.1

70-79

Borderline

6.7

69-

Mentally Retarded

2.2

 

References:

Anastasi, Anne, "Psychological Testing" , Fifth Edition, Macmillan Publishing Co Inc, New York, 1982: pages 242-251.

Coon, Dennis, "Introduction to Psychology: Exploration and Application" , West Publishing Co, New York, 1979: pages 412-415.

Wechsler, David, "The Measurement and Appraisal of Adult Intelligence" , Fourth Edition, Williams & Wilkins Co, Baltimore, 1958.

Wechsler, David, "WAIS-R Manual" , Psychological Corporation, 1981.

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