| Project/Area Number |
22K20314
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Multi-year Fund |
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| Review Section |
0110:Psychology and related fields
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| Research Institution | The University of Tokyo |
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Principal Investigator |
LI JIARUI 東京大学, ニューロインテリジェンス国際研究機構, 特任研究員 (10966807)
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| Project Period (FY) |
2022-08-31 – 2024-03-31
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| Project Status |
Completed (Fiscal Year 2023)
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| Budget Amount *help |
¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | social interaction / multi-modality / multi-time scale / infant social learning / multiple modalities / multi-scale interaction / multi-scale coordination / infant daily interaction / culture differences / Social interaction / Infants development / Multi-scale analysis |
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| Outline of Research at the Start |
How do infants handle the massive cues achievable from the natural environment to produce a response even without based on the understanding of meaning? This project proposes to use multi-scale analysis to reveal the complexity of infant-caregiver’s social coordination in natural daily life.
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| Outline of Final Research Achievements |
This project aims to quantify the social cues of multi-modality on multi-scales in the natural interaction between infants and their caregivers. To achieve this target, a multi-time scale framework was proposed for the vocal-prosodic alignment, which was used to analyze the natural day-long audio recordings. The results reveal that infants' and mothers' vocal coordination patterns are different on each timescale with cultural differences. Furthermore, the alignment analysis was extended to the vocal-emotional level. Results reveal that 9-month-old English-spoken infants and their caregivers also align on the emotional level. Also, the interaction was investigated on the cardinal modality, which reveals that the circadian rhythms from both parties are closely related to the mental states of the mothers. These findings stress that 1) Infants received varied auditory cues from the environment on multi-time scales. 2) The alignment happened on multi-levels 3) and across multi-modality.
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| Academic Significance and Societal Importance of the Research Achievements |
This project uncovered insights into how babies learn social interactions. It offers fresh perspectives on improving AI technologies by taking into account human factors, like training over different time scales. It also suggests principles for better caregiving in real-life situations.
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