ArticleScientific reports2020
Human-like maternal left-cradling bias in monkeys is altered by social pressure.
Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- A 108-h total sleep deprivation did not impair fur seal performance in delayed matching to sample task.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2024Article
- Effect of the habitat and tusks on trunk grasping techniques in African savannah elephants.Ecology and evolution · 2024Article
- Developmental cascades as a framework for primate handedness.Frontiers in behavioral neuroscience · 2022Article
- Evolution and function of neurocognitive systems in non-human animals.Scientific reports · 2021Article
- The Role of Ethnic Prejudice in the Modulation of Cradling Lateralization.Journal of nonverbal behavior · 2021Article
- Human Lateralization, Maternal Effects and Neurodevelopmental Disorders.Frontiers in behavioral neuroscience · 2021Article
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Authors and funding
4 authors.
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Abstract
About 66-72% of human mothers cradle their infants on their left side. Given that left-cradling exposes the baby's face to the mother's left visual field (i.e., mainly projected to her right hemisphere) and is altered by emotional states such as stress, maternal left-cradling was interpreted as reflecting right-hemispheric dominance for emotional processing. Whether this phenomenon is unique to human evolution is still in debate. In the present study we followed 44 olive baboon (Papio anubis) mothers and their infants in different social groups. We found that a maternal cradling bias exists and is predominantly towards the left in a similar proportion as in humans, but shifts toward a right bias in mothers living in high density groups. The sensitivity of left-cradling to social pressure highlights its potential links with the mother's stress as reported in humans. Our finding clearly illustrates the phylogenetic continuity between humans and Old-World monkeys concerning this lateralization and its potential links with hemispheric specialization for emotions, inherited from a common ancestor 25-35 million years ago.
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