Phylogenetic development of cognition; Language and thought (phylogenesis) ; Tiersprache; Animal communication; Vogelgesang; Birdsong; Zoosemiotics ; Gesture communication ; Intentionality (pragm.) ; Communication research ; Grounding (pragm.) ; Common ground; Endoxon ; Intentionality (language acquisition) ; Spracherwerb und neurologische Entwicklung; Language acquisition and neurological development; Sprache und Denken (Ontogenese) ; Language and thought (ontogenesis) ; Cognitive development; Language acquisition and cognitive development
