Very short training protocol for understanding referential cues in chimpanzees (Pan troglodytes).

Area of Science:

• Cognitive Science
• Primatology
• Developmental Psychology

Background:

• Theories of language development debate whether humans rely on species-specific adaptations or domain-general learning for understanding social cues.
• Deictic cues, such as pointing, are crucial for communication and social cognition.

Purpose of the Study:

• To investigate if domain-general learning mechanisms are sufficient for comprehending directional social cues.
• To determine the amount of training required for chimpanzees to understand deictic cues.

Main Methods:

• Forty-four mature, captive chimpanzees were trained to follow a complex set of social cues (pointing, head/body orientation, verbal cue) and a nonsocial cue (object adjacency).
• Performance was assessed using an object choice task, a measure of receptive joint attention capacity.

Main Results:

• Chimpanzees required relatively little explicit training to successfully follow deictic cues.
• The study demonstrated that chimpanzees could acquire the comprehension of social cues through training.

Conclusions:

• Domain-general learning mechanisms appear sufficient for acquiring the comprehension of deictic social cues.
• Findings suggest that humans might also develop receptive joint attention capacity through learning experiences rather than solely relying on innate, species-specific adaptations.