In summary, the current study aimed to investigate (a) whether
clear patterns of childcare arrangements from birth to 51 months exist,
(b) whether these patterns moderate cognitive development over time
from 18 months to 51 months (c) whether family context (i.e.,
maternal stimulation of language) and infant characteristics (i.e.,
difficult temperament and specifically anger or aggression in situations
of conflict with caregivers or other children) additionally predict
cognitive development controlling for family SES and child sex.