This study examined the anxiety levels and social interactions of two orphan and four mother-reared adolescent chimpanzees (Pan troglodytes schweinfurthii) in the Kasekela community at Gombe National Park, Tanzania. We used focal sampling in the field at Gombe to observe these adolescent individuals. Their social interactions and anxious behavior, measured as rough scratching, were recorded. The two orphans differed from others of a similar age by exhibiting higher levels of anxiety and lower levels of play. These results suggest that a mother's absence, even in naturalistic conditions in which other members of the community are available to the orphan, may have long-lasting impact on an adolescent's anxiety and its ability to engage in complex social interactions, such as play.
The current research examined whether nations differ in their attitudes toward action and inaction. It was anticipated that members of dialectical East Asian societies would show a positive association in their attitudes toward action/inaction. However, members of non-dialectical European-American societies were expected to show a negative association in their attitudes toward action/inaction. Young adults in 19 nations completed measures of dialectical thinking and attitudes toward action/inaction. Results from multi-level modeling showed, as predicted, that people from high dialecticism nations reported a more positive association in their attitudes toward action and inaction than people from low dialecticism nations. Furthermore, these findings remained after controlling for cultural differences in individualism-collectivism, neuroticism, gross-domestic product, and response style. Discussion highlights the implications of these findings for action/inaction goals, dialecticism, and culture.
Despite an increase in research examining maternal and infant touch, and documenting its public health impact, this mode of interaction has historically been omitted from related fields of developmental research in human and non‐human primates. The broad aim of this review is to examine to what extent mother–infant touch has been included in relational paradigms and research. We argue that although theoretical and empirical scholarship on attachment and maternal sensitivity conceptualizes touch as fundamental to caregiver–infant interactions and child development more broadly, touch is rarely operationalized or measured in caregiver–infant interaction paradigms or clinical interventions. Data from primarily human, but also non‐human, primates are reviewed to document the importance of touch, and clinical research is reviewed to document the formal use of touch in human attachment and sensitivity research and intervention. The review closes with recommended directions for future research and related implications.
Highlights
Review examining to what extent mother–infant touch has been included in relational paradigms and research across human and non‐human primates.
Data from studies in human attachment, sensitivity research and intervention, and mother–infant interaction in non‐human primates are reviewed.
Touch is theoretically essential, but practically excluded, from attachment coding, maternal sensitivity research, and intervention paradigms. Recommended directions for future research are provided.
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