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Social complexity as a proximate and ultimate factor in communicative complexity
Some of the historical arguments that led to the social complexity hypothesis are described, and evidence in support of the hypothesis is reviewed, to discuss social complexity as a driver of communication and possible causal factor in human language origins.
Acoustic sequences in non‐human animals: a tutorial review and prospectus
A uniform, systematic, and comprehensive approach to studying sequences is proposed, with the goal of clarifying research terms used in different fields, and facilitating collaboration and comparative studies.
Receivers respond differently to chick-a-dee calls varying in note composition in Carolina chickadees, Poecile carolinensis
The chick-a-dee call of the avian genus Poecile is a structurally complex vocal system because it possesses a set of simple rules that governs how the notes of the call are ordered, and variable
Social Complexity Can Drive Vocal Complexity
Results indicate that social complexity can influence communicative complexity in this species, and group size, a fundamental component of social complexity, influences the complexity of a call functioning in the social organization of Carolina chickadees.
A comparative study of avian auditory brainstem responses: correlations with phylogeny and vocal complexity, and seasonal effects
A comparative study of the peripheral auditory system in six avian species indicates that auditory brainstem responses measures in the spring broadly correlated with both vocal complexity and, in some cases, phylogeny, however, these auditory brain stem response patterns shift from spring to winter due to species-specific seasonal changes.
Perspectives – Minimizing Observer Bias in Behavioral Studies: A Review and Recommendations
Since the 1970s, texts on research methods in animal behavior advocate that researchers minimize potential observer bias in their studies. One way to minimize possible bias is to record or score
Animal vocal sequences: not the Markov chains we thought they were
It is suggested that non-Markovian vocal sequences may be more common than Markov sequences, which must be taken into account when evaluating alternative hypotheses for the evolution of signalling complexity, and perhaps human language origins.