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Updated: Jun 8, 2026
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Hand-Rearing Method for Infant Marmosets
Published on: June 9, 2023
Modulation of physical understanding by common marmosets (Callithrix jacchus)
Yumiko Yamazaki1, Atsushi Iriki, Shigeru Watanabe
1The Graduate School of Sociology, Keio University, 2F Mita Toho Building, 3-1-7 Mita, Tokyo, 108-0073, Japan. yumyam@brain.riken.jp
Animal Cognition
|September 11, 2010
Summary
Common marmosets demonstrated some understanding of physical causality in support tasks but struggled with gaps. Their performance was influenced by food item size, though they learned to disregard it.
Area of Science:
- Cognitive Science
- Primate Behavior
- Comparative Psychology
Background:
- Understanding physical causality is crucial for survival.
- Previous research indicates varying levels of causal reasoning in non-human primates.
Purpose of the Study:
- To investigate physical causality understanding in common marmosets using support problems.
- To determine if marmosets can identify the supporting surface for a food item.
Main Methods:
- Two experiments using support tasks with manipulated variables (sheet length, distance, gaps, food size).
- Presented pairs of sheets to assess choice of the sheet supporting food.
Main Results:
- Marmosets were influenced by perceptual features like food size but learned to disregard it.
- Difficulty was observed in rejecting irretrievable items closer than retrievable ones.
- Marmosets failed to account for gaps, indicating a limitation in understanding object separation.
Conclusions:
- Common marmosets show an elementary conceptual understanding of support, influenced by perceptual cues.
- Experience may enhance marmosets' physical reasoning abilities.
- Limitations exist in understanding object permanence and spatial relationships like gaps.
