We use admissions lotteries to estimate the effects of large-scale public preschool in Boston on college-going, college preparation, standardized test scores, and behavioral outcomes. Preschool ...

During this stage of writing development, toddlers (age 1 to 3) learn to hold a pencil or crayon with a clenched fist.

Software engineering activities such as package migration, fixing errors reports from static analysis or testing, and adding type annotations or other specifications to a codebase, involve pervasively ...

In Meagan Beam’s dining room, a dozen 3D printers whir and clack away as they crank out plastic tiles with colorful raised letters, letter combinations and pictures on them. The tiles are part of a ...