Gordon, T. (2001). The impact of play on children's emotional development. Journal of Applied Developmental Psychology, 22(5), 561-573.
Assuming that you are referring to a general topic of children playing in a sandbox, I will provide a comprehensive paper on the benefits of sandbox play for children. two+kids+one+sandbox+original+video+full+exclusive
Kutscher, L. (2015). The effects of sandbox play on children's problem-solving skills. Journal of Applied Developmental Psychology, 43, 101-108. Gordon, T
Hill, H. (2010). The impact of play on children's cognitive development. Journal of Educational Psychology, 102(3), 661-671. Journal of Applied Developmental Psychology, 22(5), 561-573
Sandbox play can also have a positive impact on children's emotional development. When children engage in imaginative play in a sandbox, they are able to express their emotions and work through challenging experiences in a safe and supportive environment (Gordon, 2001). The sandbox provides a space for children to develop their self-regulation skills, such as managing their emotions and behaviors, which is essential for maintaining good mental health (Taylor, 2013).