Ian T. Zajac, Nicholas R. BurnsSchool of Psychology, University of Adelaide, South Australia

• IQ testing is prevalent– Diagnostic tool– University Selection– Employee Selection

• IQ is a valid and reliable predictor of– Academic Success– Career Success– Financial Status– Longevity!

IQ

How do we measure IQ?

IQ

AD

ART

AR2

AR3

VRT

AC

AH

AT

VSD

VIT

SpA SpB

AR2

AR3

VR2

VR3

AT

AH

VF

VN

VIT

ACD

SpA SpB

VSD

VCD

AC

38% Overlap

40% Overlap

SpA SpB34%

Overlap SpA SpB

34% OverlapSpA SpB

32% Overlap

Musical Experience

4%1%

Auditory Abilities

5%4%

Hearing Threshold

4%3%

Visual Tasks

Visual & Auditory Tasks

86 % Shared

• Auditory tasks can measure IQ if they are properly designed

• Current tests used to measure ‘Speed’ are not visually biased– This may not be true for other IQ constructs

• Highly useful for early diagnosis of learning difficulties

– Reading

• Useful diagnostic tests following Traumatic Brain Injury

• Their use, when paired with Visual tests, may provide a more equitable measure of true cognitive ability

IQ

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