Unravelling self-regulation in early childhood: protocol for the longitudinal SPROUTS study.

Background: Enough is known about self-regulation to establish it as a priority target for education and intervention efforts beginning in early childhood, yet not enough to meaningfully and reliably alter developmental trajectories. Rather than resigning our aspirations, we need more nuanced and integrative understanding of self-regulation abilities and change.

Methods: Launching in 2024, SPROUTS is a 3-year longitudinal study of early self-regulation, beginning in the pre-school period (3-5 years old at Wave 1) with retrospective data back to birth and annual data collection across the transition to school period (ages 5-7 years at Wave 3). Data will be collected on children's self-regulation, related abilities, outcomes, as well as prior and current contexts. One nested study within each Wave-that contributes complementary insights via supplementary and in-depth methods and data-will enable further exploration of contemporary issues related to self-regulation.

Discussion: Insights generated can potentiate more effective intervention and education efforts by: improving intervention cost-benefit ratios; identifying likely mechanisms of change; easing burdens of unhealthy and antisocial behaviours associated with low self-regulation; and, most importantly, contributing to giving children the best early start to life. These benefits are timely in the context of intense policy and educational interest in fostering children's self-regulation.

Trial registration: Open Science Framework: osf.io/maqdg. Date of registration: 26 Sep 2024.