A new review introduces the concept of the criticome, the key development window from birth to age 25.

Researchers say some experiences during this period profoundly and irreversibly determine who people become as adults.

Experts recommend reducing children's screen time and increasing human interaction to support healthy brain development.

AI-generated summary was reviewed by a CNN editor.

Kara Alaimo is a professor of communication at Fairleigh Dickinson University and advises parents, students and teachers on how to manage screen time. Her book “Over the Influence: Why Social Media Is Toxic for Women and Girls — And How We Can Take It Back” was published in 2024.