A subset of data from the Berkeley Growth Study measuring changes in IQ of a
single girl followed from childhood into older adulthood (Bayley, 1935).
A person-period data frame with 18 rows and
2 columns:
ageAge of the girl in years.
iqIQ score.
Source
Bayley, N. (1935). The development of motor abilities during the first
three years. Monographs of the Society for Research in Child Development, 1.