Jerome Kagan

Monographs of the Society for Research in Child Development
Reflection-impulsivity: The generality and dynamics of conceptual tempo.
Galen's prophecy: Temperament in human nature.
Temperament and the Reactions to Unfamiliarity
The stability of behavior: II. Aggression.
Temperamental factors in human development.
Temperamental contributions to social behavior.
The nature of the child.
Reflection-Impulsivity and Reading Ability in Primary Grade Children
The preservation of two infant temperaments into adolescence.