1883
1893
1903
1913
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1933
1943
1953
1963
1973
1983
1993
2013
1883
1893
1903
1913
1923
1933
1943
1953
1963
1973
1983
1993
2013
The Evolution of CHC Intelligence Theory and Assessment Methods
© Institute for Applied Psychometrics (IAP) Kevin S. McGrew 1-4-11
Event shapes with
curved corners
represent subtopics
for immediately
preceeding major
event (shaded
rectangle)
Early psychometric heritage
Galton and individual differences
"Mental test" concept born
Spearman-Holzinger g+ model
British Factor Analysis Tradition Research
American Factor Analysis Tradition Research
Two factor Gf-Gc theory
WERCOF abilities established
Gf-Gc theory is extended
Cattell-Horn Ext. Gf-Gc theory
Carroll’s Tri-Stratum Model
Gq Grw added
Gf-Gc assessment (1st gen.)
WJ-R IQ-Ach battery
Gf-Gc cross-battery assessment
KAIT Gf -Gc battery
Contemporary CHC theory evolves
CHC assessment (2nd gen. + extensions)
Contemporary Intellectual Assessment books
CHC "state-of-the-art" research syntheses
16 broad ability CHC model
Carroll-Horn-Carroll umbrella term agreement
CHC cross-battery assessment formalized
Hierarchical speed taxonomy suggested
1st CHC based IQ battery published (WJ III)
Human Cognitive Abilities project
Beyond CHC theory activities
CHC IQ battery bandwagon
SB-V KABC-II WISC-IV
CHC neuropsychological assessment
DAS-II WAIS-IV
CHC assessment "state-of-the-art" synthesis