 
KABCII Subtests as Measures of
g
Adapted from
Table 8.14 in
the KABCII Manual
Good measure of g 
Fair measure of g 
Poor measure of g 

Subtest 
Average loading of g 
Proportion of variance attributed to g (%) 
Subtest 
Average loading of g 
Proportion of variance attributed to g (%) 
Subtest 
Average loading of g 
Proportion of variance attributed to g (%) 




Riddles 
.76 
58 
Pattern Reasoning 
.68 
46 
Number Recall 
.49 
24 

Verbal Knowledge 
.76 
58 
Word Order 
.65 
42 
Hand Movements 
.48 
24 

Expressive Vocabulary 
.73 
53 
Story Completion 
.64 
40 
Gestalt Closure 
.49 
24 




Triangles 
.60 
36 
Face Recognition 
.32 
10 




Conceptual Thinking 
.59 
34 







Atlantis 
.57 
32 







Rebus 
.54 
29 







Rover 
.52 
27 







Block Counting 
.50 
25 




Subtests
as Measure of g

The loadings on the first
unrotated factor provide information about g, or general intelligence.
The KABCII subtests form three grelated clusters :


• Riddles,
Verbal Knowledge, and Expressive Vocabulary are good measures of g.

• Pattern
Reasoning, Word Order, Story Completion, Triangles, Conceptual Thinking,
Atlantis, Rebus, Rover, and Block Counting are fair measures of g.

• Number
Recall, Hand Movements, Gestalt Closure, and Face Recognition are poor
measures of g.


The Knowledge/Gc subtests
have the highest g loadings in the test. On average, the proportion of
variance attributed to g is 56% for the Knowledge/Gc subtests, 43% for
the Planning/Gf subtests, 31% for the Learning/Glr subtests, 30% for the
Sequential/Gsm subtests, and 26% for the Simultaneous/Gv subtests. Subtests
with the highest proportion of variance attributed to g are Riddles,
Verbal Knowledge, and Expressive Vocabulary, all subtests of the Knowledge/Gc
Scale Index. None of the Planning/Gf, Learning/Glr subtests, Sequential/Gsm
subtests, or Simultaneous/Gv subtests are good measures of g.
