An empirical study based on a heterogeneous
sample of approximately 1,000 boys and girls
concerns longitudinal stability in intelligence and
creativity data. Group-administered intelligence
tests were given at ages 10, 13, and 15; and
different creativity tests were administered at ages
13 and 16. The three main features of the present
study were that (1) intelligence and creativity data
were collected and used for the same group of
individuals; (2) the individuals constituted an
unselected, representative group; and (3) the data
were analyzed in a
paradigm. The requirements for construct validity
proposed by Campbell and Fiske (1959) were
reformulated in terms of stability over time. The
two main requirements that were derived are that
(1) coefficients between measurements of the same
variable on different occasions must be significantly
greater than zero, and (2) a stability coefficient for
a certain variable must also be higher than the
correlation between data for this variable at the
first occasion and data for any other type of
variable at the other occasion. These two
requirements were fulfilled for both intelligence and
creativity data in all time intervals. For intelligence
measured at ages 10 and 15, a stability coefficient
of about .75 for both boys and girls was obtained.
Correlations of .45 and .42 for boys and girls,
respectively, were found between measures of
creativity taken at ages 13 and 16. These results are
in agreement with earlier studies of stability in
intelligence and creativity, and support the
construct validity of the creativity construct.
Magnusson, David & Backteman, G. (1978). Longitudinal stability of person characteristics: Intelligence and creativity. Applied Psychological Measurement, 2, 481-490. doi:10.1177/014662167800200402
Magnusson, David; Backteman, G..
Longitudinal stability of person characteristics: Intelligence and creativity.
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