Much of his research has focused on social and emotional development during infancy and childhood in the context of the developing family. Currently, with co-author Rathunde, Isabella is studying the experience of pursuing passionate activities during middle adulthood and the effects of these pursuits on adjustments to identity throughout mid and later life. Additionally, Isabella and Rathunde currently are developing an arts-informed parent education program on the importance of play for children's development and lifelong learning.