At two years of age, Samuel refuses to share his toys with his friend. Once he is in kindergarten, Samuel asks his friend to come over to play with his toys. What kind of development would you say that Samuel is showing signs of?

Samuel is showing signs of **social** development. At two years old, his refusal to share toys is typical of early childhood development, where children often focus on their own needs. By the time he reaches kindergarten and begins to invite his friend over to play with his toys, he demonstrates an understanding of social interactions, sharing, and the desire for companionship, which are key aspects of social development.