The Effectiveness of Tactile Sensory Play on the Cognitive Development of Infants Aged 12–15 Months in Mekar Sari Village, Deli Tua District. JPS [Internet]. 2025 Oct. 15 [cited 2026 Oct. 23];8(4):2252-61. Available from: https://journal-jps.com/new/index.php/jps/article/view/1125