Language and Language Disturbances: Aphasic Symptom Complexes and Their Significance for Medicine and Theory of Language is a book on aphasia by Dr. Kurt Goldstein, published in 1948. In Language and Language Disturbances, Goldstein theorized that a loss of abstract processing was the core deficit in aphasia.In his work, Goldstein studied transcortical sensory aphasia (TSA), characterizing it as impaired auditory comprehension, with intact repetition and fluent speech.