History of linguistics (19th century) ; History of linguistics (20th century) ; State of the art ; Validity (method.) ; Evaluation criterion (method.) ; Dysphasia; Aphasia ; PALPA ; Pathologische Sprachproduktion; Pathological language production; Speech production (pathol.) ; Language comprehension (pathol.) ; Word deafness; Lexikalischer Zugriff (pathol.) ; Lexical access (pathol.) ; Word recognition (pathol.)