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Welcome to eGyanKosh’s dedicated resource for Unit 4 of the IGNOU curriculum, focusing on “शैशवकाल और बाल्यावस्था में संज्ञानात्मक विकास” (Cognitive Development in Infancy and Childhood). This comprehensive study material is designed to support students navigating the complexities of developmental psychology, providing valuable insights into the cognitive growth that occurs during the earliest stages of life. As we delve into the intricacies of cognitive milestones, theories, and practical implications, our free downloadable resources aim to enhance your understanding and academic performance in this vital area of study. Get ready to explore the fascinating journey of cognitive development from infancy through childhood as part of your IGNOU 2025 coursework.