Language testing ; Spracherwerb und neurologische Entwicklung; Language acquisition and neurological development; Sprache und Denken (Ontogenese) ; Language and thought (ontogenesis) ; Cognitive development; Language acquisition and cognitive development ; Sprachfehler; Language attrition (pathol.) ; Language loss (pathol.) ; Sprachverlust (pathol.) ; Speech pathology ; Dysphasia; Aphasia ; Aetiology; Anamnese; Diffentialdiagnose; Differential diagnosis; Symptom; Syndrome; Prognosis (pathol.) ; Biomarker; Diagnosis ; Stroke; Schlaganfall; Traumatic brain injury; Brain damage (effect on language behavior) ; Illness (language behavior) ; Amnesia ; Dementia ; Hemianopia ; India (English language in) ; Indien (engl. Sprache in) ; English in India