"Smartphone Brain" Anders Hansen / Author, Yoko Hisayama / Translator A global bestseller arrives! Why didn't Steve Jobs let his children use iPads? The latest research reveals the shocking truth. On average, people spend four hours a day on their smartphones, and 20% of young people use them for seven hours. However, Steve Jobs and other IT industry leaders don't give their children digital devices. Why? Sleep disorders, depression, decline in memory, concentration, and academic performance, addiction—the latest research reveals the reality that your brain is being steadily eroded while you're immersed in the convenience of smartphones. This global bestseller, which shocked education-focused Sweden and became a social phenomenon, has finally arrived in Japan. I have read it once. With a separate cover. Since it is used, please refrain from purchasing if you are sensitive to such things. No price reduction. Immediate purchase is possible. Thank you. #Book2025