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In the current study people with fluent aphasia, Alzheimer's Dementia, and Dementia with Lewy Bodies were assessed with the same set of tests. Three different test-batteries were developed and standardised. Norms were retrieved from a large group of age-and education matched control subjects. The conceptual-semantic test-battery uses non-verbal stimuli, such as silhouettes from objects, pantomimes, object colours, and environmental sounds. Here a nonverbal response by pointing to a matching picture is required. The lexical-semantic test-battery uses the same set of stimuli but these have to be named. The lexical test-battery bypasses semantic processing by using lexical representations determined through language conventions.