A

Considerations “Normal” vs “Typical” Aging “Young-Old” vs “Old-Old” Heterogeneity Medical illness Education Culture/race Gender General intellect Past & current activity level General Intellect Linked to Education (learned) Crystallized (increases) Learned knowledge base Fluid (decreases) Reflects maturational growth/decline of neural structures Speed & efficiency of new learning Application of new principles Memory/Learning See also Aging and Memory … Read more

Historical Notes Henschen coined the term ‘akalkulia’ in 1919, describing disturbances in calculation associated with brain damage. However, the idea of brain related calculation deficits had been around for nearly a century by then. Gall and Spurzheim in 1808 postulated the idea of a ‘calculation center’ in the brain. When phrenology fell into disfavor, this … Read more