Answer:
Arnold Gesell
Explanation:
Arnold Gesell is a psychiatrist that was a major contributor to child development and learning.
He sought to find the relationship between what the children do presently and the effect on how the brain grows.
Some of the initiatives attributed to him are:
- Development of one-way viewing screens and recording methods that do not disturb children.
- Discovered development age may differ from the chronological age.
- Extensively studied children's verbal, motor, social, emotional, and cognitive growth.
In the scenario the study of instant versus delayed gratification uses one way observation that was developed by Arnold Gesell
