Step 1: Concept
Lev Vygotsky was a Soviet psychologist who is best known for his sociocultural theory, which emphasizes the role of social interaction in cognitive development.
Step 2: Meaning
Sociocultural theory focuses on how cultural tools and symbols (like language) influence human thought processes. It also highlights the importance of social interactions in shaping an individual's mental capabilities.
Step 3: Analysis
Cognitive Theory: This approach, associated with psychologists like Jean Piaget and Jerome Bruner, focuses on internal mental processes such as problem-solving and decision-making.
Social Development Theory: Vygotsky’s theory emphasizes the role of social interaction in cognitive development. He introduced concepts such as the Zone of Proximal Development (ZPD) which refers to tasks that a learner can perform with guidance but not independently.
Gestalt Theory of Learning: This theory, developed by psychologists like Max Wertheimer, Kurt Koffka, and Wolfgang Köhler, focuses on how people perceive objects as integrated wholes rather than separate parts. It does not emphasize social interaction in cognitive development.
Operant Conditioning: This learning theory, proposed by B.F. Skinner, is based on the idea that behavior can be modified through reinforcement or punishment.
Given Vygotsky's focus on social interaction and cultural tools in shaping cognition, it is clear that his contributions align with the Social Development Theory.
Step 4: Conclusion
Vygotsky has propounded the Social Development Theory.
Final Answer: (B)