Remotely delivered parenting interventions are suitable to promote child well-being and development, in a context of social isolation, as our society faced due to COVID-19. The objective of this systematic review was to assess the effectiveness of remotely delivered parenting interventions for typically developing children on caregiver-child interaction and child development. We carried out a systematic search to find studies from the inception of the database to September 2021 on six electronic databases: MEDLINE, CINAHL, Embase, Scopus, Web of Science Core Collection and Regional Portal Information and Knowledge for Health (BVS), and gray literature. Eligible study designs were experimental and quasi-experimental studies. We included parenting interventions as long as they were remotely delivered and focused on typically developing children. Two outcomes were considered: caregiver-child interaction and child development. Three randomized controlled trials (RCT) and one quasi-experimental study met the inclusion criteria. Results from two RCT revealed positive, small-to-medium effects on child development. One study showed that the new intervention had a not inferior effect compared to the results achieved by the traditional support. Children who participated in the quasi-experimental study showed significant elevations in language ability. One study reported positive caregiver-child interaction results. There is insufficient evidence to draw definitive conclusions regarding the effectiveness of remotely delivered parenting interventions on child development due to the heterogeneity of participant profiles, mode of delivery, and assessment tools. The results suggest the need to develop future methodologically rigorous studies assessing the effectiveness of remotely delivered parenting interventions for typically developing children on caregiver-child interaction and child development.

Emerging approaches to building more efficient and effective behavioral interventions are becoming more widely available. The current paper provides an empirical example of the use of the engineering-inspired multiphase optimization strategy (MOST) to build a remotely delivered responsive parenting intervention to prevent obesity among children of low-income mothers with and without depressive symptoms.
Participants were 107 mothers with (n = 45) and without (n = 62) depressive symptoms who had a child aged 12 to 42 months participating in the Women, Infants and Children program. Participants were randomized to one of sixteen experimental conditions using a factorial design that included a combination of the following eight remotely delivered intervention components: responsive feeding curriculum (given to all participants), parenting curriculum, portion size guidance, obesogenic risk assessment, personalized feedback on mealtime routines, feeding curriculum counseling, goal setting, mobile messaging, and social support. This design enabled efficient identification of components with low feasibility and acceptability.
Completion rates were high (85%) and did not statistically differ by depressive symptoms. However, mothers with depressive symptoms who received obesogenic risk assessment and personalized feedback on mealtime routines components had lower completion rates than mothers without depressive symptoms. All intervention components were feasible to implement except the social support component. Regardless of experimental condition, most participants reported that the program increased their awareness of what, when, and how to feed their children.
MOST provided an efficient way to assess the feasibility of components prior to testing them with a fully powered experiment. This framework helped identify potentially challenging combinations of remotely delivered intervention components. Consideration of how these results can inform future studies focused on the optimization phase of MOST is discussed.