Spit Test: Saliva Alerts Babies to Close Relationships
FRIDAY, Jan. 21, 2022 (HealthDay News) — Sharing food and smooching are two ways babies can suss out whom they can depend on to take care for them, a new study suggests. The tell-tale clue common to both is a surprising one: saliva. “Babies don’t know in advance which relationshipsContinue Reading