Social Cognitive Theory (SCT) was developed by Albert Bandura in the 1960s as an expansion of Social Learning Theory. SCT posits that learning occurs through dynamic interactions between personal factors, environmental influences, and individual behavior. Key concepts of SCT include reciprocal determinism in which behavior is influenced by cognitive and external social factors, observational learning by which individuals can learn new behaviors through observing others, and self-efficacy which refers to one's confidence in their own abilities. SCT emphasizes the importance of cognitive processes and social experiences in learning and behavior.