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Example
8
Factor Analysis
Introduction
This example demonstrates confirmatory common factor analysis.
About the Data
Holzinger and Swineford (1939) administered 26 psychological tests to 301 seventh-
and eighth-grade students in two Chicago schools. In the present example, we use
scores obtained by the 73 girls from a single school (the Grant-White school). Here is
a summary of the six tests used in this example:
Test Explanation
visperc
Visual perception scores
cubes
Test of spatial visualization
lozenges
Test of spatial orientation
paragraph
Paragraph comprehension score
sentence
Sentence completion score
wordmean
Word meaning test score