Primitive reflexes were studied in patients with presumed Alzheimer disease and in age‐matched nondemented controls. A snout reflex occurred with equal frequency (54%) in the two groups. An abnormal glabellar reflex was elicited more often in the demented patients (23%) than the controls (8%). The presence of a snout reflex was directly correlated with increasing age; the glabellar reflex showed a similar but nonsignificant trend. Neither reflex finding correlated with the presence of apparent cerebral atrophy by CT scan or the results of psychometric tests. The finding of primitive reflexes has little clinical value in the evaluation of the elderly.
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Koller et al. (1982) studied this question.