Representation (of space) ; Höhenbegriff; Height (notion of) ; Space (notion of) ; Representation (of time) ; Time (notion of) ; Indexicals; Indexikalische Ausdrücke ; Spracherwerb und neurologische Entwicklung; Language acquisition and neurological development; Sprache und Denken (Ontogenese) ; Language and thought (ontogenesis) ; Cognitive development; Language acquisition and cognitive development ; Kindersprache (Sprachverständnis) ; Children's comprehension of language; Language comprehension in children ; Complexity (semant.) ; English ; Polish ; Suomi; Finnish