After being informed about the study, all participants giving written informed consent will be randomly assigned to the micro intervention condition (i.e., immediate positive parenting feedback) or care-as-usual control condition in a singe-blind manner in a 1:1 ratio.
This randomized controlled microtrial, not just focus on parental (and child) responsiveness but also on an underlying physiological mechanism hypothesized to contribute to heightened susceptibility to parenting interventions.