The Lost Generation is a moniker used to generally refer to the post-World War I generation. Demographers generally consider 1883 to 1900 as the birth year range of the generation. The Lost Generation rose from the aftermath of the war, they are referred to lack purpose or drive resulting from the horrific disillusionment felt by those who grew up and lived through the war. In literature, the "Lost Generation" refers to a group of writers and poets who were men and women of this period, who established their literary reputations in the 1920s. Due to the war’s horrors, they rejected the traditions of the older generation.