Wikipedia:Articles for deletion/Timeline of psychology
I concur with Warden that the history of psychology is highly notable and in particular timelines exist in the sources. I'll also note that this article is a perfectly fine list-based article, per #List articles, a timeline with almost all entries linked to one or more WP articles. A highly notable topic, sources to draw from and a well-formed article all point to unambiguously keeping this article
— User:Mark, 05:55, 15 April 2013 (UTC)
Stance: keep
Cited policy: WP:LIST (Wikipedia:Lists)