Arnold: Gesell

He was among the first to use motion-picture cameras to record and analyze child behavior.

He systematically documented and profiled the growth patterns of about 12,000 children. 🔑 Core Principles of Maturation Theory arnold gesell

Gesell was a pioneer in using technology to study behavior without interference. He was among the first to use motion-picture

Gesell's theory rests on several foundational laws of biological growth: The Enduring Contributions of Arnold Gesell - NAEYC arnold gesell