Wikipedia
Chronocentrism
Chronocentrism (from the Greek chrono- meaning "time") was coined by sociologist Jib Fowles in an article in the journal Futures in February, 1974. Fowles described chronocentrism as "the belief that one's own times are paramount, that other periods pale in comparison." More recently, it has been defined as "the egotism that one's own generation is poised on the very cusp of history." The term had been used earlier in a study about attitudes to ageing in the workplace. Chronocentricity ... 'only seeing the value of one's own age cohort' ... described the tendency for younger managers to hold negative perceptions of the abilities or other work-related competencies of older employees. This type of discrimination is a form of ageism.