
Answer:
Stanley hall
Explanation:
Stanley hall was a psychologist who was the first person to earn a Ph.D. degree in psychology and become the first president of the American psychological association. He has influenced on developmental psychology. He worked as a teacher. He was the first person who influenced another psychologist. Â
He was known for his best work such as become the first president of APA
Found first psychology lab at Hopkins University
First American who earns a Ph.D. Â