ObjectivesThe present study examined parental sleep-supporting practices during toddlerhood in relation to temperament across 14 cultures. We hypothesized that passive sleep-supporting techniques (e.g., talking, cuddling), but not active techniques (e.g., walking, doing an activity together), would be associated with less challenging temperament profiles: higher Surgency (SUR) and Effortful Control (EC) and lower Negative Emotionality (NE), with fine-grained dimensions exhibiting relationships consistent with their overarching factors (e.g., parallel passive sleep-supporting approach effects for dimensions of NE).MethodsCaregivers (N = 841) across 14 cultures (M = 61 families per site) reported toddler (between 17 and 40 months of age; 52% male) temperament and sleep-supporting activities. Utilizing linear multilevel regression models and group-mean centering procedures, we assessed the role of between- and within-cultural variance in sleep-supporting practices in relation to temperament.ResultsBoth within-and between-culture differences in passive sleep-supporting techniques were associated with temperament attributes, (e.g., lower NE at the between-culture level; higher within-culture EC). For active techniques only within-culture effects were significant (e.g., demonstrating a positive association with NE). Adding sleep-supporting behaviors to the regression models accounted for significantly more between-culture temperament variance than child age and gender alone.ConclusionHypotheses were largely supported. Findings suggest parental sleep practices could be potential targets for interventions to mitigate risk posed by challenging temperament profiles (e.g., reducing active techniques that are associated with greater distress proneness and NE).

Aims: The present study assessed cross-cultural differences in temperament and temperament stability between children from the United States (US) and the People’s Republic of China (PRC). Goals of the study include examining differences in three temperament factors (surgency, negative affectivity, and regulation/effortful control), conducting comparisons on fine-grained dimensions of factors demonstrating significant cross-cultural differences, and comparing temperament stability from infancy to toddlerhood. Methodology: The US sample (N = 147) and PRC sample (N = 128) consisted of children whose temperament was longitudinally assessed in infancy and toddlerhood using the Infant Behavior Questionnaire-Revised Short Form (IBQ-R SF) and the Early Childhood Behavior Questionnaire Short Form (ECBQ SF). Primary analyses involved evaluating mean differences in the three temperament factors: surgency, negative affectivity, and regulation/effortful control, with additional statistical tests conducted to investigate fine-grained distinctions. Results: Findings revealed main effects of culture for each factor with culture x time interactions indicating negative affectivity significantly differed in toddlerhood, t(273) = -8.27, P < .001, d = 1.00, 98.75% CI [-0.70, -0.37], and regulation in infancy, t(273) = -5.17, P < .001, d = 0.62, 98.75% CI [-0.62, -0.22]. Specifically, the US sample exhibited higher surgency at both time points, lower negative affectivity in toddlerhood, and lower regulation in infancy. In addition, little difference was noted in temperament stability between the US and Chinese samples. Conclusion: Our findings support previous reports identifying cultural differences in temperament and highlight that differences are not constant across early childhood, but rather that as development unfolds, their nature is subject to change.