“…Rather, encouragement and praise may have conveyed that the adults value the infants' help and that handing the object back is the right way to help. In addition, given infants' general affiliativeness and desire for social interactions (Brownell, in press; Carpendale, Kettner, & Audet, 2015; Cortes Barragan & Dweck, 2014; Rheingold, 1982; Rheingold, Cook, & Kolowitz, 1987), salient positive signals like praise and encouragement may render helping interactions more enjoyable. Indeed, it is possible that the vocal tones and other non-verbal positive expressions can render helping interactions more enjoyable regardless of the linguistic content of the message (as long as the infant knows what to do) (Fernald, 1993).…”