During the classical period of behavioural economics, economics was allied with which field?

• A. Psychology
• B. Sociology
• C. Physics
• D. Anthropology

Answer: (A)

Behavioral economics’ early development comes from pairing economic theory with psychology to explain how people actually choose. Traditional economics often assumes perfect rationality, but psychology shows that people use mental shortcuts, face limits in attention and information, and are influenced by how options are framed and how they perceive risk. This collaboration led to concepts like bounded rationality, illustrating that decision making is shaped by cognitive constraints rather than ideal optimization alone. Because the study of thinking, biases, and real-world decision processes originates in psychology, the field’s classical period is closely tied to psychology. Other disciplines contribute valuable perspectives, but psychology is the primary partner for understanding how people decide.