Ageism imatanthawuza tsankho ndi tsankho chifukwa cha msinkhu wa munthu, zomwe zimakhudza achichepere ndi achikulire omwe. Mawuwa anapangidwa ndi Robert N. Butler mu 1969, ndipo mawuwa akuphatikizapo maganizo oipa okhudza ukalamba, tsankho la anthu achikulire, komanso kuponderezedwa kwa achinyamata ndi mibadwo yokalamba. Zakale zimawonekera m'njira zosiyanasiyana, kuphatikizapo malingaliro omwe amalimbikitsa luso ndi zofuna zawo malinga ndi msinkhu, tsankho lomwe limabweretsa kunyozedwa kapena chifundo, ndi tsankho zomwe zimabweretsa zoipa kwa anthu chifukwa cha msinkhu wawo.