A new assessment for preschool-aged children generates two distinct measures of interest-type and deprivation-type curiosity, both internally consistent. Children’s vocabulary is associated with both measures, most strongly with deprivation-type curiosity, and the relationship is robust to a rich set of...

Behavioral interventions, or nudges, generate demand responses that are comparable to substantial price interventions. While nudges have high welfare returns at the margin, price instruments often generate larger total surplus at scale.

Generative AI has spread through K-12 schools faster than almost any classroom technology before it, reaching 90% of schools within three years. But adoption is not the same as integration, which includes the policies, training, and guidance that determine whether...