dyscalculian.
/dɪskalˈkjuːlɪə/ Medicine.
Severe disturbance of the ability to calculate, resulting from cerebral injury.
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the world > health and disease > mental health > mental illness > degree or type of mental illness > [noun] > impairment of mental powers > dyslexia, aphasia, or dyscalculia
aphemia1864
agraphia1867
aphasia1867
asymbolia1874
alexia1875
agraphy1879
amusia1890
anomia1897
dyslexia1917
strephosymbolia1925
acalculia1926
dysgraphia1934
dyscalculia1953
1953 M. Critchley Parietal Lobes vii. 208 Dyscalculia is the fourth characteristic feature of the Gerstmann syndrome... The most striking defects are apparent when the patient attempts to make calculations upon paper.
1964 M. Critchley Developmental Dyslexia vi. 38 There may exist a higher-level dyscalculia, made up partly at any rate by an inability to visualise numbers.
1965 W. R. Brain Speech Disorders (ed. 2) iii. 27 Dyscalculias of the spatial type indicate a lesion of the right hemisphere.
1965 R. Luchsinger & G. E. Arnold Voice-Speech-Language ii. b. i. 596/1 True dyscalculia is present when the processes of calculation are disturbed independently of the reading act and in all forms of mathematical manipulation.
This entry has not yet been fully updated (first published 1972; most recently modified version published online March 2020).
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n.1953