Peak–end rule end. The effects of the duration of an experience upon retrospective evaluation are extremely slight. Fredrickson and Kahneman labeled this phenomenon "duration neglect". The peak–end rule is applicable only when an experience has definite beginning and end periods. A 1993 study titled "When More Pain Is Preferred to Less: Adding a Better End" by Kahneman, Fredrickson, Charles Schreiber, and Donald Redelmeier provided groundbreaking evidence for the peak–end rule. Participants were subjected to two different versions of a single unpleasant experience. The first trial had subjects submerge a hand in 14 °C water for 60 seconds. The second trial had subjects
Community Rule 30% of the scrolls are classified as "sectarian". The most complete manuscript of the Community Rule was found in Cave 1, and was first called the Manual of Discipline by Millar Burrows. It is now designated 1QS (which stands for : "Cave 1 / Qumran / "Serekh" = 'rule'). Numerous other fragments of this document, containing variant readings, were found in caves 4 and 5 (4QS, 5Q11, 5Q13). Two other documents, known as the Rule of the Congregation (1QSa) and the Rule of the Blessing (1QSb), are found on the same scroll as 1QS and while they were originally thought