“…Interestingly, informal childcare did not yield the same benefits on either language or CEF growth. Although the evidence is mixed regarding the cognitive benefits of informal care (Green, Pearce, Parkes, Robertson, & Katikireddi, 2020; Hansen & Hawkes, 2009; Laing & Bergelson, 2019; Melhuish et al, 2015), ECEC's strengths in terms of, for example, caregiver‐child interactions, predictable schedules, lower screen use, and caregiver education is likely to be important for nurturing children from disadvantaged contexts (Dowsett, Huston, Imes, & Gennetian, 2008). Note that we did not collect fine‐grained information about the nature of this informal childcare at the first observation point since restrictions did not allow household mixing.…”