Learning theory ; Learning disability ; Developmental dyslexia; Reading disability; Leseschwäche; Rechtschreibschwäche; Lese-Rechtschreibschwäche; LRS; Legasthenie; Dyslexia ; Miniature artificial language; Artificial grammar (psycholing.) ; Syntactic development; Morphological development; Morphologie (Spracherwerb) ; Syntax (Spracherwerb) ; Grammatical development ; Deviation (child language) ; Rule (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 ; English (British) ; Grossbritannien (engl. Sprache in) ; Great Britain (English language in) ; Englisch in Grossbritannien; English in Great Britain; British English