Which time investments in the first 5 years of life matter most for children’s language and behavioural outcomes at school entry?

Background The ways children spend their time is one of the most valuable inputs for healthy child development. It is unknown which time investment yields the greatest return for children’s language and behavioural outcomes at school entry. Methods We used data from the first three waves (2004, 2006, 2008) of the Longitudinal Study of Australian Children (n = 4253). At every wave, parents completed 24-h time-use diaries on one randomly selected...