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Background: Health service providers closely monitor the developmental state of toddlers to identify the factors affecting this process because any defect during this period will cause irreversible damage. Therefore, this study investigated the relationship of nutritional behaviors and parent-child interactions with the developmental domains of Iranian toddlers., Methods: This cross-sectional, descriptive-analytical study was conducted on 341 toddlers aged 12-36 months covered by comprehensive health centers in the south of Tehran in 2021-2022. The participants were selected through single-stage cluster sampling. To this end, 16 comprehensive health centers were randomly selected, and then some of the clients from each center were randomly selected as the sample. The required data were collected through the Ages and Stages Questionnaire (ASQ), the Children's Eating Behavior Questionnaire (CEBQ), the Child-Parent Relationship Scale (CPRS), and a demographics form. They were then analyzed statistically using descriptive and inferential statistics in SPSS-21, considering a significance level of p < 0.05., Results: The results showed that most participants were normal in all developmental domains (communication, gross motor, fine motor, personal-social, and problem-solving), with a mean developmental delay ranging from 1.8 to 7%. The most serious problem of participants requiring medical referral was related to gross motor (7%) with a mean of 54.35 ± 7.28 followed by communication (6.5%) with a mean of 49.41 ± 9.67. The mean nutritional behavior of participants was 77.9 ± 21.7. A significant relationship was found between the nutritional behaviors of participants and the problem-solving domain of development (p = 0.018). The results also indicated a mean parent-child interaction score of 94.26 ± 12.63. There was a significant relationship between parent-child interactions and the communication area of development (p = 0.04)., Conclusion: Since some areas of toddler development are influenced by children's nutritional behavior and parent-child interactions, it is necessary to train families to identify, monitor, and correct the factors affecting the development of their children. Health system officials and planners are also recommended to develop interventions to improve the nutritional behaviors of children and parent-child interactions., (© 2024. The Author(s).)

Background: Children from socioeconomically disadvantaged families have a markedly elevated risk for impaired cognitive and social-emotional development. Children in poverty experience have a high risk for developmental delays. Poverty engenders disproportionate exposure to psychological adversity which may contribute to impaired offspring development; however the effect may be mitigated by social support and other aspects of resilience. Our objective was to determine the association between maternal stress, adversity and social support and early infant neurobehavior and child behavior at two and three years., Methods: We conducted a longitudinal mother-infant cohort study nested within a regional home visiting program in Cincinnati, Ohio. Four home study visits were completed to collect measures of maternal stress, adversity and social support and infant and child behavior. A measure of infant neurobehavior ('high-arousal' infant) was derived from the NICU Network Neurobehavioral Scale (NNNS) at 1 month and externalizing and internalizing symptoms were measured by the Child Behavior Checklist (CBCL) at 24 and 36 months. Linear and logistic regression identified associations between maternal risk/protective factors and infant and child behavioral measures. We used stratification and multiplicative interaction terms to examine potential interactions., Results: We enrolled n = 55 pregnant mothers and follow 53 mother-offspring dyads at 1 month, 40 dyads at 24 months and 27 dyads at 36 months. Maternal adversity and protective factors were not associated with neurobehavior at one month. However, maternal depression and measures of distress in pregnancy were significantly associated with internalizing and externalizing symptoms at 24 and 36 months., Conclusions: This pilot study established the feasibility of conducting longitudinal research within a community intervention program. In addition, although there were no statistically significant associations between maternal psychosocial factors in pregnancy and infant neurobehavior, there were several associations at 24 months, primarily internalizing symptoms, which persisted through 36 months. Future work will replicate findings within a larger study as well as explore mediators and modifiers of these associations., (© 2021. The Author(s).)