Factorial Validity Research Articles

Online instructor satisfaction measure: Psychometric properties of the Persian version in nursing-midwifery faculty members.

Faculty satisfaction with online teaching is essential for having effective online courses, and student success. Hence, a standard and suitable measure for the evaluation of satisfaction from online learning is required. This study was conducted to psychometrically evaluate the Persian version of the Online Instructor Satisfaction Measure (OISM) in nursing-midwifery faculty members. A cross-sectional methodology study was conducted among Iranian nursing-midwifery faculty members (n = 400) from April to May 2020. After forward-backward translation, the face and content validity were assessed. The construct validity of the questionnaire was evaluated through exploratory and confirmatory factor analyses and its convergent and discriminant validities were evaluated. The reliability of the questionnaire was also evaluated through Cronbach's alpha and McDonald's omega. Five factors (instructor-student interaction, student-student interaction, affordance, institutional support, and course design/development/teaching interaction) were identified in the exploratory factor analysis (χ 2 (241) = 379.43, P < .001, χ 2/df = 1.574, GFI = 0.888, CFI = 0.939, IFI =.940, TLI =.930, RMSEA (90% C.I.) =.049 [.039.,058]). The questionnaire had acceptable content and convergent validity. The questionnaire had acceptable reliability. The findings of the study supported the adequate reliability, factorial, and convergent validities of OISM in a sample of Iranian nursing-midwifery faculty members.

Portuguese version of the Short-Form Condom Attitude Scale and psychometric properties among undergraduate students.

The condom use can be influenced by psychological and sociocultural aspects, which can be modulated by individual's attitudes. The aim was to propose a Brazilian Portuguese version of the Short-Form Condom Attitude Scale (Short-Form CAS), describing all procedures of translation, transcultural adaptation, and psychometric properties evaluation when applied to undergraduate students. A cross sectional study was conducted among students enrolled at University of São Paulo (USP), Campus Ribeirão Preto (n = 491; 61.2% female; average age: 22 years; standard deviation: four years). Confirmatory factor analysis was performed. A one-factor model with seven items exhibited good factorial validity and reliability, suggesting to be a better factorial solution of the Short-Form CAS in the sample. Few studies have been carried out on the behavioral factors associated with condom use in key populations, which can be exacerbated by a lack of appropriate scales. Therefore, the main contribution of the present study was to propose a simplified and transculturally adapted version of the Short-form CAS with some psychometric properties verified. Since the use of condoms is a component of the study of sexual risk behavior, this scale might be an option to be applied in various Brazilian population segments for this purpose.

The SSIS SEL Brief Scales – Student Form: Examining the Structural Validity of a Portuguese Version

Abstract Background Despite the increased use of social and emotional learning (SEL) programs, empirical research is hindered by lengthy assessment options, difficult to fit into educational contexts. To cover these needs, the Social Skills Improvement System SEL Brief Scales – Student Form (SSIS SELb-S) was developed. Although it has been translated into several languages, a Portuguese version with sound psychometric properties is still missing. Objective This study aimed to develop the Portuguese version (SSIS SELb-Spt) and to examine its psychometric properties. METHODS: After translating the original SSIS SELb-S to Portuguese, the instrument was administered to 200 5th graders, along with self- and hetero-report measures of school well-being and involvement, peer acceptance, and academic achievement. We examined the SSIS SELb-Spt factorial validity and reliability, tested its correlations with external correlates, and examined the instruments’ predictive validity. Results Results supported a three-factor structure of the scale, which included the dimensions of intrapersonal and interpersonal skills, and responsible decision-making. Correlations with external correlates were in the expected direction. Moreover, the scale predicted school involvement and later academic achievement. Conclusion This study seems to corroborate and extend previous knowledge about the validity of SSIS SELb-S, offering validity and reliability evidence on the scale’s three-factor structure.

Validation of the 12-item Gamification User Types Hexad Scale in 1,610 Hong Kong Young Gamers

AbstractThe present study aimed to examine the psychometric properties of the Gamification User Types Hexad Scale (Hexad) and validate the 12-item short version (Hexad-12) in the Chinese context. An online survey recruited 1,610 young gamers aged between 11 and 29 (mean age = 23.1, SD = 4.18) in Hong Kong between May and June 2023, who completed the Hexad-24 and other validated measures. Factorial validity and measurement invariance of Hexad were evaluated by confirmatory factor analysis. Convergent validity of Hexad factors was examined with demographic and gaming characteristics, social support, internet gaming disorder (IGD) symptoms, depressive symptoms, and hikikomori. The 6-factor model provided mediocre fits (comparative fit index &lt; 0.90 and standardized root mean square residuals &gt; 0.07) to the original 24-item Hexad but adequate fits (comparative fit index = 0.97 and standardized root mean square residuals &lt; 0.04) to Hexad-12 in split samples with substantial factor loadings and acceptable reliability. The Hexad-12 factors showed scalar measurement invariance across gender, age groups, and game genre. Disruptor was positively and moderately to strongly correlated with IGD and depressive symptoms, hikikomori, and suicidal ideation. Philanthropist and socializer were positively and moderately correlated with social support and meaning in life; free-spirits and achievers were negatively and weakly correlated with IGD and depressive symptoms, hikikomori, and suicidal ideation. The present findings demonstrated adequate psychometric properties for the Hexad-12, supporting its use for brief assessment of Chinese gamers' user types.

Measuring childbirth-related posttraumatic stress disorder: Psychometric properties of the Italian version of the City Birth Trauma Scale (City BiTS).

The City Birth Trauma Scale (City BiTS) assesses postpartum posttraumatic stress disorder (PTSD) based on the Diagnostic and Statistical Manual of Mental Disorders (5th ed.) criteria. Although it has been validated worldwide, predictive validity has not been previously examined. Moreover, no Italian version of the scale exists. This study aimed to test the bifactor latent structure and alternative models, internal consistency, test-retest reliability, convergent validity, divergent validity, and predictive validity of the City BiTS. Women (N = 629) who had given birth within the past 3 months completed an online survey including sociodemographic and obstetric characteristics, the City BiTS, the Impact of Event Scale-Revised, and the Edinburgh Postnatal Depression Scale. After 3 months, women completed the City BiTS again and reported their intention to breastfeed during the 1-year postpartum. Exploratory factor analysis confirmed the two-factorial structure. In confirmatory factor analysis, the two-factorial solution showed the best model fit. Internal consistency was good to excellent for the subscales and the total scale. Correlation analyses showed strong convergent validity with the Impact of Event Scale-Revised, high divergent validity with the Edinburgh Postnatal Depression Scale, high test-retest reliability, and good predictive validity with the intention to exclusively breastfeed. Moreover, the Birth-Related Symptoms subscale distinguished between different types of delivery. The City BiTS-Italian is the first measure evaluating and diagnosing childbirth-related PTSD symptoms based on Diagnostic and Statistical Manual of Mental Disorders (5th ed.) in Italy. The factorial structure and validity reported in other cultural contexts were confirmed; moreover, findings add evidence to the scale's temporal stability and predictive validity. Besides contributing to clinical purposes, the City BiTS-Italian will facilitate international comparability regarding the prevalence of PTSD following childbirth. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

The MoodWheel app: validation and factor structure of a new tool for the assessment of mood based on the experience sampling method

Background The MoodWheel app is a newly developed tool that uses experience sampling method (ESM) for assessing negative and positive emotions, based on the circumplex model of emotions and the binary model of distress, and including behavioral and heart rate (HR) measurement via photoplethysmography and the possibility to personalize the application with additional measures. Aims: This study was designed to assess the factorial structure, reliability and validity of the MoodWheel (MW) application for evaluating emotions in children, adolescents. Methods A sample of 490 children and adolescents were recruited from the schools. Internal consistency was assessed via Cronbach’s alpha test. Concurrent validity was assessed by evaluating the correlations between MW and Profile of Emotional Distress scale (PED) scores, in terms of functional/dysfunctional negative and positive emotions. Results Results obtained show that MW has good to excellent internal consistency and test-retest reliability, while the convergent validity was also adequate. Moreover, we found support for the organization of the MW based on the binary model of distress, given the predictive value found for the irrational and rational beliefs. Conclusions The MW application is a useful and easy to use tool that can be used for the accurate measurement of emotions, which will be complimented in future with additional behavioral parameters to provide a comprehensive and dynamic assessment.

Psychometric analysis of the kansas city cardiomiopathy questionnaire-23 in a european population

Abstract Background People affected by heart failure (HF) often exhibit poor quality of life, which places a great deal of burden on the healthcare systems. The Kansas City Cardiomyopathy Questionnaire (KCCQ)-23 is one of the most widespread instruments to measure quality of life in this population. So far, its psychometric properties have been investigated by a broad array of research, but the overall findings reveal inconsistency of the factorial structure and lack of rigorous psychometric testing. Objective The aim of this study was to evaluate the psychometric properties of the KCCQ-23 in a European cohort of HF patients. Methods The data used for this study were collected for the MOTIVATE-HF study, which was a three-arm, multicenter, randomized controlled trial to evaluate the effect of motivational interviewing for improving self-care in HF. A group of 510 patients (median age 74 years, IQR=18, 58% males) completed the KCCQ-23 along with clinical and psychosocial measures. Factorial validity was established with confirmatory factor analysis (CFA); omega and model-based internal consistency indexes were computed to examine the internal consistency of the scale. Convergent validity was established by correlating the KCCQ-23 scores with several clinical and psychosocial measures. Measurement invariance testing was conducted within a multigroup framework across patients with preserved vs those with reduced ejection fraction. Results Two CFA solutions were tested, which confirmed the theoretical and empirical models postulated by the original author. The internal consistency coefficients for the latent dimensions were adequate (Omega range =0.77-0.93; internal consistency coefficient =0.89-96)- KCCQ-23 scores were found to be correlated with ejection fraction, NYHA levels, quality of life, self-care confidence, anxiety and depression, and symptom burden, supporting its convergent validity. Finally, the KCCQ-23 was invariant across ejection fraction levels, both in the theoretical and empirical factor solution. Conclusion Overall, this study provides for the first time evidence that the KCCQ-23 has satisfactory psychometric properties, promoting its use in clinical settings and research to investigate the quality of life in patients with HF.

Psychometric properties of the KCCQ-12 in an european cohort of patients with heart failure

Abstract Background Despite medical advances, patients with heart failure continue to suffer from poor quality of life due to worsening symptoms and functional limitations. Therefore, it is important to understand the multidimensional facets of quality of life in these patients. The Kansas City Cardiomyopathy Questionnaire is a commonly used quality of life assessment tool worldwide. However, However, there is still a lack of knowledge about its psychometric properties. Purpose The aim of this study was to investigate the psychometric properties of the KCCQ-12 and its measurement invariance in a cohort of European patients with heart failure. Methods Participants (n=510, median age=72, IQR=18, 58% males) completed the KCCQ-12 alongside measures of clinical psychosocial severity. A confirmatory factor analysis was used to establish factorial validity; internal consistency was determined using the Omega coefficient and the model-based internal consistency coefficient. Zero-order correlations between the KCCQ-12 scores and clinical and psychosocial measures were performed to test convergent validity. Multigroup confirmatory factor analysis was conducted to test measurement invariance across patients with preserved vs reduced ejection fraction. Results Confirmatory factor analysis confirmed a four-factor solution, with the domains of physical limitations, symptom frequency, quality of life, and social interference. Internal consistency was excellent (Omega coefficients ranging from 0.83 and 0.90, and internal consistency index of 0.94). The KCCQ-12 scores significantly correlated with ejection fraction, New York Heart Association class, quality of life, anxiety, depression, symptom burden, and the KCCQ-23 Overall Summary score, which adequately supported the convergent validity of the KCCQ-12. Measurement invariance was confirmed at the partial scalar and strict level. Conclusions These findings support the validity and reliability of the KCCQ-12, both in patients with reduced and preserved ejection fraction. Hence, this version can be confidently used both in research and clinical practice to measure quality of life of heart failure patients.

Development of a Japanese Version of the Brief Ageing Perceptions Questionnaire and Its Validity and Reliability

Background: Self-perceptions of aging are important predictors of physical and mental health, longevity, and quality of life. The Brief Ageing Perceptions Questionnaire (B-APQ) is the most promising scale of self-perceptions about aging and has been translated into many languages. This study aimed to develop a Japanese version of the B-APQ and examine its validity and reliability. Methods: A web-based survey of 1500 people aged 65 and older was conducted in Japan. Of the participants, 651 were men and 849 were women. The average age was 72.97 years. Results: No significant distributional biases were found for any items of the Japanese version of the B-APQ. A confirmatory factor analysis (CFA) was conducted using the same model as the previous studies. The results of CFA showed that the goodness of fit indices met the acceptability criteria. Two-tailed Pearson correlations showed significant relationships between each factor of the Japanese version of the B-APQ as well as the cognitive and physical functioning, depression, and well-being of older adults. Conclusions: The Japanese version of the B-APQ has high internal consistency and significant factorial and construct-related validity. The Japanese version of the B-APQ is expected to be used to measure the self-perceptions of aging for further study in Japan.

Development and validation of the Environmental Confinement Stressors Scale (ECSS-20).

The COVID-19 pandemic has generated a global crisis with severe consequences for public health. There have been negative impacts on people's quality of life and mental health due to various stressors arising in this context, such as physical, social, economic, and psychological challenges. Noteworthy among these are the indirect effects of health measures, especially social distancing and confinement, which have significantly altered people's daily lives and social activities, producing high levels of anxiety, depression, and stress. This study proposes developing and validating a cross-sectional scale called the "Environmental Stressors Scale (ECSS-20)" to address the need to measure the impact of environmental stressors during confinement. The scale, which has been validated following ethical and methodological guidelines, consists of four dimensions: economic stressors (EE), social activities (SA), habitability (H), and exposure to virtual media (EMV). A pilot study (n = 113) and a main study (n = 314) were applied. The results showed that the instrument has a reliable and valid structure, with satisfactory internal consistency and factorial validity. Likewise, gender invariance tests supported its suitability for its applicability to women and men. Overall, the ECSS-20 is a valuable instrument for assessing the impact of confinement and improving the understanding of people's subjective experiences in this situation. Future research could further develop its applicability in different contexts and populations to better understand its usefulness and psychometric properties.

Validation of the Ukrainian versions of two life purpose scales: Revised sense of purpose in life scale (SOPS-2U) and specific purpose orientations (SPO-U)

This work focused on the translation and evaluation of the psychometric properties of two widely used scales for assessing sense of purpose in life – the Revised Sense of Purpose Scale (SOPS-2) and the Specific Purpose Orientations (SPO) scale – in the Ukrainian language. The SOPS-2 consisted of 14 items measuring three dimensions of purpose: awakening to purpose, awareness of purpose, and altruistic purpose. Meanwhile, the SPO included 12 items assessing three types of purpose: others-growth, self-growth, and career-focused purpose orientations. Renamed as the Revised Sense of Purpose Scale – Ukrainian Version (SOPS-2U) and the Specific Purpose Orientations – Ukrainian Version (SPO-U), these two scales underwent a thorough translation process by two multilingual scholars proficient in both Ukrainian and English languages, employing the committee approach. Then through analyses of two datasets, the factorial validity, construct validity, and reliability of the SOPS-2U and SPO-U were established. These translated scales provide reliable and valid tools for assessing life purpose among Ukrainian-speaking adults.•Recognizing the profound impact of life purpose on adult wellbeing, the availability of a psychometrically robust measurement tool for assessing this construct in the Ukrainian language becomes crucial; thus, we translated and validated two such tools.•The Revised Sense of Purpose Scale – Ukrainian Version (SOPS-2U) is valid for assessing awakening to purpose, awareness of purpose, and altruistic purpose dimensions in Ukrainian adults.•The Specific Purpose Orientations – Ukrainian Version (SPO-U) can be used with Ukrainian adults to further examine the specific types of purpose, such as others-growth, self-growth, and career-focused purpose orientations.

On the nature of influence: identifying and characterizing superdiffusers in seven countries

Abstract An important component of theoretical and applied work on social influence is identifying influential people. Boster et al.’s theoretical framework on superdiffusers provides one method of doing so, but important questions on the nature of influence remain. In particular, because existing studies have primarily sampled U.S. college students, it remains unclear whether (a) the framework adequately characterizes superdiffusers in different populations and (b) our current understanding of superdiffusers applies outside of the United States. To address these questions, we used an online survey to examine factorial validity, metric invariance, and correlates of superdiffuser characteristics in the United States, the United Kingdom, Singapore, South Africa, India, Pakistan, and Australia (total N = 3,476). Results suggest the superdiffuser framework can fruitfully be used to describe and identify influential individuals in diverse contexts. Influence also appears to be a relatively trait-like individual difference rather than a matter of unique fit to a particular country or culture.

Development and psychometric evaluation of a questionnaire for the assessment of depression in primary care: a cross-sectional study

ObjectivesTo develop a new questionnaire for the diagnostic assessment of depression adapted to the primary care setting by combining psychiatric criteria and heuristics of general practitioners (GPs). Psychometric evaluation of...

DEVELOPMENT OF ECONOMIC ABUSE SCALE (EAS); ESTABLISHING CONTENT VALIDITY OF EAS

Economic abuse involves behaviors that control a woman’s ability to acquire, use, and maintain economic resources, thus threatening her economic security and potential for self-sufficiency (Adams, Sullivan, Bybee, &amp; Greeson, 2008). Woman battering is a prevalent social problem committed against millions of women each year. Battering involves psychological abuse, physical abuse, and economic abuse as well. Economic abuse is the area which is less focused as compared to other forms of battering. The objective of present study was to develop an indigenous scale that would explore the phenomenon of economic abuse faced by married Pakistani women as currently there is no such indigenously developed measure of economic abuse available in Pakistan. Present study was conducted in two phases. In the first phase, a pool of items was generated. In phase two, Content Validity for EAS was established. The Scale CVI was 0.93. All 41 items were retained and were transformed into a 5-point rating scale. The psychometric properties of scale will be established using factorial validity.

Psychometric properties and measurement invariance of the Chinese version of the cognitive emotion regulation questionnaire‐short in patients with cancer

AbstractObjectiveThe study aimed to evaluate the psychometric properties and measurement invariance (MI) of the Chinese version of the cognitive emotion regulation questionnaire‐short (CERQ‐short) in cancer patients.MethodsThis cross‐sectional study included 505 cancer patients from mainland China. In addition to sociodemographic and clinical characteristics, the CERQ‐short and the distress thermometer were included in the study measures.ResultsItem analysis indicated a promising result. And the results of CFA indicated that the CERQ‐short demonstrated satisfactory factorial validity in cancer patients. Cronbach's alpha coefficients were between 0.663 and 0.910, while McDonald's omega coefficients were between 0.664 and 0.910. The CERQ‐short had sufficient convergent, discriminant and concurrent validity among cancer patients. Lastly, MI supported that the CERQ‐short demonstrated strong measurement equivalence across gender, residence and age.ConclusionsThis study shows that the Chinese version of the CERQ‐short has convincing psychometric properties and MI, which supports its use in cancer patients.

Psychometric characteristics of a questionnaire to assess perceived disability in people with epilepsy

It has been determined that quality of life in epilepsy is closely related to the perceived disability experienced by individuals with the diagnosis. However, this measure is seldom considered in healthcare processes. The objective of the present study is to establish the psychometric properties of the Perceived Disability Questionnaire in individuals diagnosed with epilepsy within a Latin American context. A cross-sectional, analytical study was conducted involving 325 participants, aged 12 years and older (M 40.42 years), individuals diagnosed with epilepsy in Colombia. The main psychometric properties of the instrument were explored to account for its factorial validity and reliability. The Perceived Disability Questionnaire exhibits high reliability (α = 0.878) and the three subscales comprising the final version of the questionnaire (Dissatisfaction, Pessimism, and Self-Disdain) explain 45.393 % of the total variance in relation to beliefs of disability associated with the diagnosis of epilepsy; the questionnaire significantly correlates with the Quality of Life in Epilepsy Inventory (QOLIE-10). Adequate psychometric properties of the instrument are found, which allows for its proposal as a tool in epilepsy care processes within the Colombian context.

Psychometric Properties of the Chinese Version of the Core Symptom Index: A Study among Chinese Parents of Children with Autistic Spectrum Disorders.

(1) Background: Parents of children with autism spectrum disorders often experience psychological distress, which can affect the quality of childcare they provide. It is crucial to screen for psychiatric symptoms among these parents. The core symptom index (CSI) is a widely recognized tool used to assess general symptoms, including depression, anxiety, and somatic issues. It has proven validity and reliability across diverse Thai populations. Given the cultural similarities between Thai and Chinese populations, the CSI has been successfully implemented within the Chinese population. Nevertheless, it is crucial to research its validity and reliability in the general Chinese population. This study aimed to investigate the psychometric properties of the Chinese version of the CSI among parents of children with autism spectrum disorders using confirmatory factor analysis (CFA). (2) Methods: A total of 794 Chinese parents raising children with autism participated in this study. All completed the CSI, along with the social inhibition subscale of the Interpersonal Problems Inventory and the Couple Satisfaction Index. Factorial validity was assessed using CFA to determine how well the bifactor three-factor model fits the data. Various structural models were compared using model fit indices. Convergent and discriminant validity were examined by exploring correlations with the social inhibition subscale and the Couple Satisfaction Index. Invariance testing of the CSI was conducted across multiple groups based on gender, age, and education using CFA. The reliability of the CSI was evaluated using McDonald's omega coefficients. (3) Results: The bifactor model emerged as the best-fitting model for the data, suggesting that the total score of the CSI adequately represents overall psychiatric symptoms. The CSI exhibited significant correlations with the social inhibition subscale (r = 0.41, p < 0.01) and smaller correlation coefficients with the Couple Satisfaction Index (r = -0.16, p < 0.05), indicating both convergent and discriminant validity. The invariant test results support scalar invariance levels based on gender and age but only partial invariance for education. The Chinese version of the CSI demonstrated high consistency, with McDonald's omega coefficients ranging between 0.86 and 0.95. (4) Conclusions: The bifactor model of the Chinese version of the CSI is validated, making it a suitable tool for measuring depression, anxiety, and somatization symptoms among parent(s) of children with autism spectrum disorders. Further research on other Chinese populations is encouraged.

From loss to disorder: The influence of maladaptive coping on prolonged grief

Research indicates that post-bereavement coping strategies can be adaptive or maladaptive. Understanding which strategies lead to poorer outcomes is an important clinical and theoretical question with the potential to guide intervention.The Oxford Grief – Coping Strategies scale was developed from interviews with bereaved people with and without prolonged grief disorder (PGD) to assess the frequency of maladaptive cognitive and behavioural strategies after bereavement. Factorial and psychometric validity were assessed using exploratory and confirmatory factor analysis (N = 676). A three-wave cross-lagged panel model (N = 275) was used to assess the predictive validity of the tool in explaining symptoms of PGD.Results supported a four-factor solution (Avoidance, Proximity Seeking, Loss Rumination, Injustice Rumination) with good psychometric properties. The OG-CS predicted prospective symptoms of PGD in the short-term (6–12 months) and long term (12–18 months), controlling for baseline symptoms and autocorrelations. Subscale analyses demonstrated that the use of coping strategies predicted ICD-11 PGD in both the short-term and the long-term. However, avoidance was not predictive of outcomes early in the grieving process. At 6–12 months, avoidance predicted PGD at 12–18 months.

Structural Validity of the Interpersonal Behaviors Questionnaire in Greek University Sport-Students

The examination of the interpersonal behaviors of undergraduate student-athletes can contribute to the research on the perceptions of students for satisfaction and frustration of basic psychological behaviors by teachers in the context teaching classes. Aim of this study was to translate into Greek and investigate the factorial validity and internal consistency of the Interpersonal Behavior Questionnaire (IBQ; 24-item six factors). 252 full-time undergraduate student-athletes (125 males and 127 females) were used ranging in age 18 to 38 years. The results of CFA showed a good fit of the data to the model, while the multi-sample results indicated invariance for factor loadings and correlations between male and female samples. Internal consistency coefficients Cronbach alpha and interclass correlation were moderate significant. In conclusion, the IBQ-Gr version has valid and reliable psychometric properties and can be applied to examination of the perceptions interpersonal behaviors others into Greek population.

Development of the medical adherence scale in adolescents using psychotropic medication and evaluation of validity and reliability in Turkish population

PurposeAlthough treatment non-adherence is relatively high among adolescents, there is a need for standardized measurement tools that measure adherence to treatment in adolescents. This study aimed to develop a new measurement tool to assess the adherence to treatment of adolescents with mental disorders who use psychotropic medication. MethodsThe data of this methodologically designed study were collected between 01.04.2022 and 01.07.2023 in the Department of Child and Adolescent Psychiatry of a university hospital in the Aegean Region of Turkey. The Medication Adherence Reporting Scale and Adolescent Medical Adherence Scale draft form were used for data collection. The scale items were formed from the themes, sub-themes, and statements in the qualitative study that the researchers had conducted with adolescents with mental disorders and their parents, clinicians' experiences, and systematic reviews and meta-synthesis in the literature. The study sample consisted of 95 adolescents with mental disorders. Exploratory factor analysis was performed with Varimax rotation to determine the factorial construct validity of the scale. Internal consistency analyses were performed in reliability analyses, and Cronbach's alpha coefficient was used. ResultsThe mean age of the adolescents was 14.18 years (1.81); 50.5% were male, and 96.8% were attending school. When the mental disorder diagnoses were analyzed, 65.3% of the adolescents were being followed up with Attention Deficit and Hyperactivity Disorder diagnoses, and 58.8% were using stimulants. The 12-item form of the Adolescent Medical Adherence Scale was found to have a three-factor structure with item-total correlation values ranging between 0.26 and 0.66, and these factors were named functionality, responsibility in treatment, and medication adherence. Factor loadings ranged between 0.44 and 0.86, and the items explained 62.98% of the total variance. The internal consistency coefficients of the scale were between 0.69 and 0.83 for the subscales and 0.82 for the total scale. ConclusionBased on the analysis and results used in this study, the Adolescent Medical Adherence Scale is a valid and reliable new measurement tool. Practice implicationsThis tool can be used in clinical settings to evaluate adolescents' treatment adherence and prognosis. Clinical studies conducted with adolescents can also determine adherence to treatment and affecting factors.