The childhood traits and conditions of 21 eminent American women scien
tists were compared with these of 235 eminent women in other fields. A
s girls, those who became eminent scientists were much more like, rath
er than different from, other girls who became eminent. All girls were
, for example, precocious and hard working. In early life, however you
ng scientists did exhibit several distinguishing traits from girls who
became eminent in other fields. They were more concentrated on scienc
e and engaged in scientific activities; they were also more bookish an
d scholarly Many lived in rural areas and were allowed or encouraged t
o pursue nature study, reading, and writing. Case studies of two women
scientists exemplify early traits and opportunities that distinguish
girls who became eminent women scientists.