The Evolution of Primate Communication and Metacommunication.

Area of Science:

• Primate communication
• Comparative psychology
• Animal behavior

Background:

• Prior views limited primate communication to signal decoding.
• Emerging evidence suggests more complex communication abilities in primates.

Purpose of the Study:

• To investigate intentional and habitual communication in primates.
• To explore the nonconceptual content of primate signals.
• To compare human and nonhuman primate communication strategies.

Main Methods:

• Comparative analysis of primate communication behaviors.
• Examination of signal content and its motivational impact on conspecifics.
• Evaluation of nonconceptual cue monitoring in communication.

Main Results:

• Primates intentionally perform and understand habitual communication actions.
• Primate signals convey affordance-sensing, immediately motivating conspecifics.
• Humans and nonhuman primates share capacities for impulsive/habitual communication and monitoring message relevance via nonconceptual cues.

Conclusions:

• Primate communication is more sophisticated than previously thought, involving intentionality and nonconceptual content.
• Humans share fundamental communication capacities with nonhuman primates, despite possessing advanced propositional communication.