Phylogenese; Biolinguistics ; Tiersprache; Animal communication; Vogelgesang; Birdsong; Zoosemiotics ; Sprachpsychologie; Psycholinguistics ; Metalinguistic awareness; Phonologische Bewusstheit; Phonological awareness; Focus on form (language teaching) ; Sprachbewusstsein; Linguistic awareness ; Sentence processing; Language processing; Language comprehension ; Elderspeak; Gerontolekt; Seniorensprache; Old age (language behavior) ; Child language ; Spracherwerb und neurologische Entwicklung; Language acquisition and neurological development; Sprache und Denken (Ontogenese) ; Language and thought (ontogenesis) ; Cognitive development; Language acquisition and cognitive development ; Dysphasia; Aphasia