Do animals use names? Conceptual and empirical criteria

Area of Science:

• Comparative Cognition
• Animal Communication
• Bioacoustics

Background:

• Recent claims suggest nonhuman animals use receiver-specific calls as individual names.
• Such calls, if proven, would indicate symbolic social reference, rare in nonhuman communication.
• Evaluating these claims requires a robust framework to assess the nature of these vocalizations.

Purpose of the Study:

• To establish minimal criteria for identifying name-like calls in nonhuman animals.
• To critically evaluate existing evidence for name-like calls in selected species.
• To provide a theoretically grounded framework for future research in this area.

Main Methods:

• Proposed three essential criteria: individual reference, symbolic representation, and shared meaning.
• Reviewed scientific literature and observational data for spectacled parrotlets, common marmosets, African elephants, and bottlenose dolphins.
• Assessed evidence against the established criteria to determine the validity of name-like call claims.

Main Results:

• The study provides a structured approach to differentiate true names from other forms of individual vocal recognition.
• Evidence for name-like calls was examined across four distinct species, highlighting variations in communication complexity.
• The proposed criteria offer a standardized method for future investigations into animal vocalizations.

Conclusions:

• The developed framework offers a clear and theoretically sound method for exploring name-like calls in nonhuman animals.
• Further research is needed to definitively confirm the presence and function of names in animal communication systems.
• This work advances our understanding of the evolution of symbolic communication and social referencing.