जॉन्स हॉप्किन्स यूनिवर्सिटी के वैज्ञानिकों की रिसर्च,11 माह और इससे अधिक उम्र के 65 बच्चों पर हुई स्टडी
source https://www.bhaskar.com/happylife/news/children-more-intelligent-with-attention-to-puzzles-and-magic-tricks-curiosity-to-understand-things-increases-desire-to-learn-in-them-128651195.html
source https://www.bhaskar.com/happylife/news/children-more-intelligent-with-attention-to-puzzles-and-magic-tricks-curiosity-to-understand-things-increases-desire-to-learn-in-them-128651195.html