Arnold Gesell was a well-known developmental psychologist who pioneered the study of child development. Some synonyms for his name include "child development expert," "child psychologist," "developmental scientist," and "child development researcher." Gesell is also known for his contributions to the study of motor and cognitive development in children. Other synonymous phrases that might describe his work include "child growth and development specialist," "child behavior expert," and "child development theorist." Gesell's work continues to be cited today in the fields of psychology, sociology, and education, and his insights into early childhood development remain relevant to contemporary research on child development.