objective: substance abuse is a socio-psychological disorder. the aim of this study was to compare the effectiveness of acceptance and commitment therapy with 12-steps narcotics anonymous on psychological well-being of opiate dependent individuals in addiction treatment centers in shiraz, iran. method: this was a randomized controlled trial. data were collected at entry into the study and at po...

Open AccessConfirmatory Factor Analyses in Psychological Test Adaptation and DevelopmentA Nontechnical Discussion of the WLSMV EstimatorKay Brauer, Jochen Ranger, Matthias ZieglerKay BrauerKay Department Psychology, Martin Luther University Halle-WittenbergEmil-Abderhalden?Str. 26-27, 06099 Halle, Germany, [email protected]://orcid.org/0000-0002-7398-8457Department Halle-Witten...

W e believe that everyone needs to understand the basic principles of psychological measurement. Whether you wish to be a practitioner of behavioral science, a behavioral researcher, or a sophisticated member of modern society, your life is likely to be affected by psychological measurement. If you are reading this book, then you might be considering a career involving psychological measurement...