The experiment compared 51 preteens at a five-day screen-free camp with 54 matched controls retaining usual media practices.
After five days interacting face-to-face without the use of any screen-based media, preteens’ recognition of nonverbal emotion cues improved significantly more than that of the control group for both facial expressions and videotaped scenes.
Abstract
The experiment compared 51 preteens at a five-day screen-free camp with 54 matched controls retaining usual media practices. It did not test a five-hours-per-day threshold; the book’s wording is misattributed.