Part
2
People and Organizations
126
Variations in personal
characteristics
The headings under which personal characteristics
can vary have been classified by Mischel (1968) as
follows.
and mechanical abilities, as well as perceptual
(memory) and motor skills relating to physical oper-
ations such as eye/hand coordination and mental
dexterity.
They also suggested that overriding these abi-
lities there is general mental ability (GMA), which
accounts for most variations in performance. Follow-
ing a meta-analysis of 85 years of research findings,
Schmidt and Hunter (1998) established that GMA
was the most valid predictor of future performance
and learning for selecting people without previous
experience.
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