“…There are three interrelated phenomena reported in the literature. First, 15‐month‐old infants can learn the emotional consequences of performing an action simply by observing a social interaction between two other people—termed “emotional eavesdropping” (Repacholi & Meltzoff, ; Repacholi, Meltzoff, Rowe, & Toub, ; Repacholi, Meltzoff, Toub, & Ruba, ). Second, 12‐ to 14‐month‐old infants respond in socially anxious ways toward strangers after watching their mother's anxious emotional reaction (de Rosnay, Cooper, Tsigaras, & Murray, )—termed “indirect social referencing.” Finally, in language acquisition, 18‐month‐olds can acquire new words by overhearing others' conversations (Floor & Akhtar, ; Gampe, Liebal, & Tomasello, ).…”