In a recent article, Killeen (2005) proposed the statistic prep, the probability of replicating an effect, as an alternative to traditional null-hypotheses significant tests (NHST). In this article, two experiments were conducted and their analytical results based on prep and traditional p values were compared: non-significant results based on p values were reinterpreted as meaningful results in light of power analysis, calculating the effect size and prep value. The tendency of p value analyses not to reveal non-significant results (i.e. the file drawer problem) and the improvement of decision-making methods are discussed.

Psychiatry and Clinical NeurosciencesVolume 46, Issue 1 p. 249-249 Prevalence of Seasonal Mood Changes in Low Latitude Area: Seasonal Pattern Assessment Questionnaire Score of Quezon City Workers Akinori Ito, Akinori Ito Department of Psychiatry Fujita Health University School of Medicine, NagoyaSearch for more papers by this authorManabu Ichihara, Manabu Ichihara *Department of Hygiene, Nagoya University School of Medicine, NagoyaSearch for more papers by this authorNaomi Hisanaga, Naomi Hisanaga *Department of Hygiene, Nagoya University School of Medicine, NagoyaSearch for more papers by this authorYuichiro Ono, Yuichiro Ono *Department of Hygiene, Nagoya University School of Medicine, NagoyaSearch for more papers by this authorYuhei Kayukawa, Yuhei Kayukawa **Department of Psychiatry, Nagoya University School of Medicine, NagoyaSearch for more papers by this authorTatsuro Ohta, Tatsuro Ohta **Department of Psychiatry, Nagoya University School of Medicine, NagoyaSearch for more papers by this authorTamotsu Okada, Tamotsu Okada **Department of Psychiatry, Nagoya University School of Medicine, NagoyaSearch for more papers by this authorNorio Ozaki, Norio Ozaki ***Section on Environmental Studies, National Institute of Mental Health, BethesdaSearch for more papers by this author Akinori Ito, Akinori Ito Department of Psychiatry Fujita Health University School of Medicine, NagoyaSearch for more papers by this authorManabu Ichihara, Manabu Ichihara *Department of Hygiene, Nagoya University School of Medicine, NagoyaSearch for more papers by this authorNaomi Hisanaga, Naomi Hisanaga *Department of Hygiene, Nagoya University School of Medicine, NagoyaSearch for more papers by this authorYuichiro Ono, Yuichiro Ono *Department of Hygiene, Nagoya University School of Medicine, NagoyaSearch for more papers by this authorYuhei Kayukawa, Yuhei Kayukawa **Department of Psychiatry, Nagoya University School of Medicine, NagoyaSearch for more papers by this authorTatsuro Ohta, Tatsuro Ohta **Department of Psychiatry, Nagoya University School of Medicine, NagoyaSearch for more papers by this authorTamotsu Okada, Tamotsu Okada **Department of Psychiatry, Nagoya University School of Medicine, NagoyaSearch for more papers by this authorNorio Ozaki, Norio Ozaki ***Section on Environmental Studies, National Institute of Mental Health, BethesdaSearch for more papers by this author First published: March 1992 https://doi.org/10.1111/j.1440-1819.1992.tb00854.xAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article. Volume46, Issue1March 1992Pages 249-249 RelatedInformation