title: Development and validation of a stock addiction inventory (SAI).
abstract: BACKGROUND
  Investing in financial markets is promoted and protected by the government as an essential economic activity, but can turn into a gambling addiction problem. Until now, few scales have widely been used to identify gambling addicts in financial markets. This study aimed to develop a self-rating scale to distinguish them. In addition, the reliability and validity of the stock addiction inventory (SAI) were demonstrated.
  
  
  METHODS
  A set of questionnaires, including the SAI, south oaks gambling screen (SOGS), and DSM-5 diagnostic criteria, for gambling disorder was completed by 1005 participants. Factor analysis, internal consistency testing, t tests, analysis of variance, and partial correlation analysis were conducted to verify the reliability and validity of SAI.
  
  
  RESULTS
  The factor analysis results showed the final SAI consisting of two factors and nine items. The internal consistency and concurrent validity of SAI were verified. The Cronbach's α for the total scale was 0.892, and the SAI and its factors were significantly correlated with SOGS.
  
  
  CONCLUSIONS
  This study developed a specific scale for financial market investments or trading; this scale proved to be reliable and valid. Our scale expands the understanding of gambling addiction in financial markets and provides a diagnostic reference.
authors.affiliation: Chungmugong Leadership Center, Naval Education and Training Command, Republic of Korea Navy, 111, Jinhui-ro, Jinhae-gu, P.O. Box 211, Changwon-si, Gyeongsangnam-do 51655 South Korea.
authors.forename: HyunChul
authors.initials: H
authors.lastname: Youn
authors.affiliation: Department of Psychiatry, SMG-SNU Boramae Medical Center, 20 Boramae-ro 5-gil, Dongjak-gu, Seoul, 07061 South Korea.
authors.forename: Jung-Seok
authors.initials: JS
authors.lastname: Choi
authors.affiliation: Department of Psychiatry, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 06591 South Korea.
authors.forename: Dai-Jin
authors.initials: DJ
authors.lastname: Kim
authors.affiliation: Korea Institute on Behavioral Addictions, True Mind Clinic, F7, KR Tower, 1 141, Teheran-ro, Gangnam-gu, Seoul, 06132 South Korea ; Healthcare & Information Research Institute, Namseoul University, 91, Daehak-ro, Seonghwan-eup, Seobuk-gu, Cheonan-si, Chungcheongnam-do 31021 South Korea.
authors.forename: Sam-Wook
authors.initials: SW
authors.lastname: Choi
keywords: Behavioral addiction; Financial markets; Gambling addiction; Stock addiction inventory; Stock investments; Trading