Glottodidaktik; Lehrforschung; Pädagogische Linguistik; Pedagogical linguistics; Language teaching research ; Sprache und Denken; Language and thought; Sprachliches Relativitätsprinzip; Denken und Sprache; Relativity (linguistic) ; Wahrnehmung und Sprache; Perception and language; Sapir-Whorf hypothesis; Linguistic relativity ; Soliloquy; Self talk; Intrapersonal communication; Talking to oneself; Private speech ; Language and thought (speech production) ; Second language acquisition (psycholing.) ; Lateinisch; Latin