Effectiveness of a Baby App for Enhancing Infant Mental Well-being (RCT)

This RCT aims to design and develop a developmental guidance program delivered by a smartphone app \"Happy Baby HK\" and evaluate its effectiveness for enhancing the mental well-being of recently born infants in Hong Kong. This study will evaluate the effectiveness of the improvement in the effect of infants and decrease of risk of developmental delay in very young children. The smartphone app \"Happy Baby HK\" will be designed and developed by different professionals. Then, participants will be invited to use this app or the MCHC parenting booklet. They will also be invited to fill in some questionnaires at 6, 12 and 18 months postpartum to screen the developmental stages. Researchers will compare the intervention group and the control group to evaluate the effectiveness of this app for enhancing the mental well-being of infants.