Tovah P. Klein
Contributor, CNBC Make ItTovah P. Klein, PhD, is a psychology professor at Barnard College and the director of Barnard's Center for Toddler Development. She is the author of "How Toddlers Thrive: What Parents Can Do Today for Children Ages 2–5 to Plant the Seeds of Lifelong Success" and "Raising Resilience: How to Help Our Children Thrive in Times of Uncertainty."