Historical clue formulations

• College subj. that can be evolutionary or behavioral — 2026-02-12
• Stage name of South Korean rapper Park Jae-sang — 2026-02-06
• ___-ops — 2025-03-12
• Modest bouquet — 2025-03-02
• Therapist's maj. — 2025-01-28
• Liberal arts major: Abbr. — 2024-09-15
• K-pop sensation of 2012 — 2024-07-19
• College department that might pay students to be test subjects: Abbr. — 2024-06-06
• "Gangnam Style" rapper — 2024-03-31
• ___.D (therapist's deg.) — 2023-12-22
• First music artist to have a video with a billion YouTube views — 2023-11-07
• Rapper with the 2014 hit "Hangover" — 2023-07-05
• "Gangnam Style" rapper — 2023-04-16
• "Gangnam Style" musician — 2022-11-29
• "Gangnam Style" rapper — 2022-08-17
• "Gangnam Style" rapper — 2021-11-03
• K-pop star whose hit 2012 song refrain made "The Yale Book of Quotations" — 2021-09-29
• ___-ops — 2021-07-31
• "Gangnam Style" singer — 2020-12-21
• "Gangnam Style" rapper — 2020-12-14
• "Gangnam Style" performer — 2020-09-08
• "Gangnam Style" musician — 2020-08-10
• Social sciences dept. — 2020-04-26
• College subj. that covers Freud — 2019-07-09
• "Gangnam Style" rapper — 2019-01-20
• "Gangnam Style" rapper — 2019-01-13
• Liberal arts dept. — 2018-05-04
• Liberal arts dept. — 2017-11-09
• University department, in course descriptions — 2017-09-29
• "Gangnam Style" hitmaker — 2017-08-27
• One-named singer with the 2013 top 5 hit "Gentleman" — 2017-06-24
• Rapper with the most-viewed YouTube video of all time — 2017-02-26
• "Gangnam Style" singer — 2016-09-18
• Korean performer with a monster 2012 international hit — 2016-06-07
• Singer recognized as the "King of YouTube" in 2012 — 2015-04-23
• University course, for short — 2015-02-21
• Stage name for 2012 singing sensation Park Jae-sang — 2014-11-13
• "Gangnam Style" stylist — 2014-08-17
• "Gangnam Style" rapper — 2014-05-28
• College subj. with experiments — 2013-09-23
• "Gangnam Style" rapper — 2013-04-10
• Rapper behind the 2012 "Gangnam Style" YouTube sensation — 2012-12-27
• Liberal arts dept. — 2012-02-04
• Freud subj. — 2009-01-19
• Subj. that deals with mixed feelings — 2008-03-30