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Mandatory play breaks (i.e., forced termination of a gambling session) and personalized feedback about the gambling expenditure are two RG tools that are frequently used. While the motivation behind mandatory play breaks is simple (i.e., gambling operators expect gamblers to reduce their gambling significantly as a result of an enforced break in play), empirical evidence supporting the efficacy of the mandatory breaks is still limited. The present study comprised a real-world experiment with the clientele of Norwegian gambling operator <jats:italic>Norsk Tipping<\/jats:italic>. On the <jats:italic>Norsk Tipping<\/jats:italic> gambling website, which offers slots, bingo and sports-betting, forced termination occurs if gamblers have played continuously for a one-hour period. The study tested the effect of different lengths of mandatory play breaks (90\u00a0s, 5\u00a0min, 15\u00a0min) on subsequent gambling behavior, as well as the effect of combined personalized feedback concerning money wagered, won, and net win\/loss. In total 21,129 online players (61% male; mean age\u2009=\u200947.4\u00a0years) experienced at least one play break between April 17 and May 21 (2020) with 156,989 mandatory play breaks in total. Results indicated that a 15-min mandatory play break led to a disproportionately longer voluntary play pause compared to 5-min and 90-s mandatory play breaks. Personalized feedback appeared to have no additional effect on subsequent gambling and none of the mandatory play breaks appeared to affect the increase or decrease in money wagered once players started to gamble again.<\/jats:p>","DOI":"10.1007\/s10899-021-10078-3","type":"journal-article","created":{"date-parts":[[2021,10,12]],"date-time":"2021-10-12T21:32:48Z","timestamp":1634074368000},"page":"737-752","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["The Effect of Mandatory Play Breaks on Subsequent Gambling Behavior Among Norwegian Online Sports Betting, Slots and Bingo Players: A Large-scale Real World Study"],"prefix":"10.1007","volume":"38","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4672-7956","authenticated-orcid":false,"given":"Niklas","family":"Hopfgartner","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michael","family":"Auer","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tiago","family":"Santos","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Denis","family":"Helic","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mark D.","family":"Griffiths","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2021,10,12]]},"reference":[{"key":"10078_CR1","doi-asserted-by":"publisher","first-page":"1406","DOI":"10.3389\/fpsyg.2015.01406","volume":"6","author":"M Auer","year":"2015","unstructured":"Auer, M., & Griffiths, M. 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The first and second authors were sub-contracted by Nottingham Trent University. The first, third and fourth authors were contracted by Graz University of Technology. The last author has received funding for a number of research projects in the area of gambling education for young people, social responsibility in gambling and gambling treatment from Gamble Aware (formerly the Responsibility in Gambling Trust), a charitable body which funds its research program based on donations from the gambling industry. The second and last authors undertake consultancy for various gaming companies in the area of social responsibility in gambling.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"This study was performed in line with the principles of the Declaration of Helsinki. Approval for the study was granted by Nottingham Trent University\u2019s ethics committee.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics"}},{"value":"Not applicable.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Code availability"}}]}}