Early social experiences, such as caregiver scaffolding, play a crucial but disputed role in the emergence of prosociality. A longitudinal experiment examined how explicit scaffolding—such as encouragement or praise—influences helping late in the first year, when helping emerges. Eighty-three infants (40 female, 6–9 months, 54% White, 17% Hispanic/Latinx, 16% Asian) participated in up to 10-weekly home visits in which they could help an experimenter in a novel activity. Data were collected in Santa Cruz, CA between February 2018 and August 2019. Compared to the control condition, explicit scaffolding increased helping by handing out-of-reach objects, η2 = .02, and, among younger infants, by cleaning up. Helping also increased with age and visit number. Using a new paradigm, this research provides experimental evidence for how adults’ scaffolding shapes the emergence of helping in infancy.
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Dahl et al. (2021) studied this question.