ABSTRACT
In 1967, Ennio De Renzi and Hans Spinnler, two Italian neurologists, published a paper on colour tasks pioneered by Lewandowsky (1908). They examined the effects of cortical damage in a large sample of aphasic and non-aphasic patients (100 left brain damaged and 73 right brain damaged). De Renzi and Spinnler (1967) employed what now would be unfashionably large samples but they felt the need to determine the frequency with which impairments for colour tasks occurred in brain-damaged patients.
