RD UNIVERSITY,
_April, 1916_.
CONTENTS
PART I. PROBLEMS AND RESULTS
CHAPTER I
THE USES OF INTELLIGENCE TESTS 3
Intelligence tests of retarded school children. Intelligence
tests of the feeble-minded. Intelligence tests of delinquents.
Intelligence tests of superior children. Intelligence tests as a
basis for grading. Intelligence tests for vocational fitness.
Other uses of intelligence tests.
CHAPTER II
SOURCES OF ERROR IN JUDGING INTELLIGENCE 22
Are intelligence tests superfluous? The necessity of standards.
The intelligence of retarded children usually overestimated. The
intelligence of superior children usually underestimated. Other
fallacies in the estimation of intelligence. Binet's
questionnaire on teachers' methods of judging intelligence.
Binet's experiment on how teachers test intelligence.
CHAPTER III
DESCRIPTION OF THE BINET-SIMON METHOD 36
Essential nature of the scale. How the scale was derived. List of
tests. How the scale is used. Special characteristics of the
Binet-Simon method. The use of age standards. The kind of mental
functions brought into play. Binet would test "general
intelligence." Binet's conception of general intelligence. Other
conceptions of intelligence. Guiding principles in choice and
arrangement of tests. Some avowed limitations of the Binet tests.
CHAPTER IV
NATURE OF THE STANFORD REVISION AND EXTENSION 51
Sources of data. Method of arriving at a revision. List of tests
in the Stanford revision and extension. Summary of changes.
Effects of the revision on the mental ages secured.
CHAPTER V
ANALYSIS OF ONE THOUSAND INTELLIGENCE QUOTIENTS 65
The distribution of intelligence. The validity of the
intelligence quotient. Sex differences. Intelligence of the
different social classes. The relation of the I Q to the quality
of the child's school work. The relation between I Q and grade
progress. Correlation between I Q and the teachers' estimates of
the children's intelligence. The validity of the individual
tests.
CHAPTER VI
THE SIGNIFICANCE OF VARIOUS INTELLIGENCE QUOTIENTS 78
Frequency of different degrees of intelligence. Classification of
intelligence quotients. Feeble-mindedness. Border-line cases.
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