Polat I.Ince Guliyev E.Elmas S.Karakaş S.Aydemir Ö.Üçok A.2024-07-222024-07-22202213651501http://akademikarsiv.cbu.edu.tr:4000/handle/123456789/12875Objectives: The Self-Evaluation of Negative Symptoms Scale (SNS) is a self-report scale that evaluates a patient’s subjective experience on all five domains of the negative symptoms. This study aimed to present the adaptation and validation study of the Turkish version of SNS(SNS-TR). Methods: Seventy-five patients and 50 controls were recruited for this study. After the approval of the translation, participants were asked to fill out SNS-TR by themselves. They were interviewed with the Brief Negative Symptoms Scale (BNSS), Positive and Negative Syndrome Scale (PANSS), and Calgary Depression Scale for Schizophrenia (CDSS). Results: SNS-TR showed good internal consistency in the reliability analysis with Cronbach’s alpha= 0.873. Subscale-total score correlation coefficients were significant (p < 0.01). In the validity analyses, the total and subscale scores of SNS-TR showed positive correlations with the total and subscales of BNSS, with only one exception of BNSS lack of distress subscales. The total score of SNS-TR demonstrated a significant correlation with PANSS-total, PANSS-negative subscale, PANSS-general subscale, and CDSS scores. Confirmatory factor analysis showed acceptable values for the five-factor structure, similar to the original version. Conclusion: To conclude, our study indicates that SNS-TR is an easily applicable self-evaluation tool with good psychometric properties for assessing negative symptoms. KEY POINTS SNS is a novel and easily applicable self-report scale for examining negative symptoms in schizophrenia patients, allowing them to evaluate their subjective experience on all five domains of the negative symptoms. It shows good internal consistency (α= 0.873) which is similar to the original version (α = 0.867). Confirmatory factor analysis scores were found in acceptable ranges and SNS-TR confirm the five-factor structure. Using this scale in clinical practice would empower both the physician’s examinations and patient participation through treatment and follow-up course. © 2022 Informa UK Limited, trading as Taylor & Francis Group.EnglishDiagnostic Self EvaluationHumansPsychiatric Status Rating ScalesPsychometricsReproducibility of ResultsSchizophreniaadultArticleCalgary Depression Scaleclinical practiceconfirmatory factor analysiscontrolled studycorrelation coefficientCronbach alpha coefficientdepressiondistress syndromefemalefollow uphealth surveyhumaninternal consistencymajor clinical studymalenegative syndromepatient participationPositive and Negative Syndrome Scalepositive syndromereliabilityself evaluationself reportself-evaluation of negative symptoms scalevalidation processvalidation studypsychological rating scalepsychometryreproducibilityschizophreniaArticle10.1080/13651501.2022.2082985