To save content items to your account,
please confirm that you agree to abide by our usage policies.
If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account.
Find out more about saving content to .
To save content items to your Kindle, first ensure no-reply@cambridge.org
is added to your Approved Personal Document E-mail List under your Personal Document Settings
on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part
of your Kindle email address below.
Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations.
‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi.
‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
The study aimed to translate the Eating-Related Eco-Concern Questionnaire (EREC) into Turkish, ensure its cross-cultural adaptation, and evaluate its reliability, validity, and psychometric properties. EREC is a 10-item scale assessing the extent to which adults consider ecological impact when making food choices due to concerns about climate change. The study was conducted between November 2023 and February 2024 in Mersin with 442 adults aged 18 to 65 years, using face-to-face interviews. The Turkish version was adapted using the Translation–Back Translation method, and language validity was ensured. Face validity was evaluated through a pilot study with 40 participants. Construct validity was initially assessed using exploratory factor analysis (EFA) with data from 200 participants, followed by confirmatory factor analysis (CFA) conducted on an independent sample of 242 participants to verify the factor structure. The reliability of the scale was assessed by test-retest analysis with 106 participants from the main sample (n=442) and consistency was measured by intraclass correlation coefficient (ICC). The factor structure and model fit were evaluated using indices such as CFI, GFI, and RMSEA. 68.3% of the participants were female; whereas, 31.7% were male. The group’s median BMI value was 24.3 (21.6-27.1), with 52.9% classified as “normal” according to the BMI classification. Factor 2 had a low score, but it was found to be adequate for other factors and the total scale score. The Turkish adaptation of the Eating-Related Eco-Concern Questionnaire has been found to be a valid and reliable scale, as confirmed by comprehensive evaluations.
No research has assessed Hamilton Rating Scale for Anxiety (HRSA) psychometric properties in Ethiopian university students, using item response theory (IRT) and classical theory.
Aims
This study aimed to assess psychometric properties of the English HRSA in Ethiopian students, using IRT and classical theory.
Method
University students (N = 370, age 21.44 ± 2.30 years) in Ethiopia participated in a cross-sectional study. Participants completed a self-reported measure of anxiety, a sociodemographics tool and interviewer-administered HRSA.
Results
Confirmatory factor analysis (CFA) favoured a one-factor structure because fit indices for the one-factor model; and two distinct two-factor models were similar, but high interfactor correlations violated discriminant validity criteria in two-factor models. This one-factor structure showed structural invariance as evidenced by multi-group CFA across gender groups. No ceiling/floor effects were seen for the HRSA total scores. Infit and outfit mean square values for all the items were within the acceptable range (0.6–1.4). Four threshold estimates (τi1, τi2, τi3 and τi4) for each item were ordered as expected. Differential item functions showed item-level measurement invariance for all the 14 HRSA items across gender for both uniform and non-uniform estimates. McDonald’s ω and Cronbach’s α for the HRSA tool were both 0.88. The convergent validity of the interviewer-administered HRSA with self-reported anxiety subscale of the 21-item Depression, Anxiety and Stress Scale was weak to moderate.
Conclusions
The findings favour the validity of a one-factor structure of the HRSA with adequate item properties (classical and rating scale model), convergent validity, reliability and measurement invariance (structural and item level) across gender groups in Ethiopian university students.
Understanding consumers' food wasting behaviours is crucial to reducing food waste. This study aimed to adapt the Food Wasting Behaviours Questionnaire (FWBQ) to Turkish and evaluate its validity and reliability. A cross-sectional study was conducted with 421 adults, preceded by a pilot study with 30 individuals to assess the intelligibility of the questionnaire. Exploratory factor analysis (EFA) was performed on a subsample of 219 participants, followed by confirmatory factor analysis (CFA) on an independent subsample of 202 participants. Reliability was assessed using Cronbach’s Alpha (CA), and test–retest reliability was evaluated with the intraclass correlation coefficient (ICC) in a separate group of 100 participants. As a result of EFA, a six-factor structure emerged—diverging from the original five-factor model of the FWBQ—indicating that in the Turkish context, planning meals and planning shopping behaviours formed distinct dimensions. Three items with low factor loadings (<0.30) were excluded, and the final version included 27 items with a total explained variance of 57.3%. CFA confirmed good model fit, and internal consistency was strong (CA = 0.700 to 0.924). Test–retest reliability was also high (ICC = 0.787 to 0.896). In conclusion, the Turkish version of the FWBQ is a valid and reliable tool for assessing a wide range of food wasting behaviours. The emergence of a sixth factor highlights the importance of cultural context in shaping food management routines and has implications for cross-cultural comparisons and future adaptations.
We in this paper employ a penalized moment selection procedure to identify valid and relevant moments for estimating and testing forecast rationality within the flexible loss framework proposed by Elliott et al. (2005). We motivate the selection of moments in a high-dimensional setting, outlining the fundamental mechanism of the penalized moment selection procedure and demonstrating its implementation in the context of forecast rationality, particularly in the presence of potentially invalid moment conditions. The selection consistency and asymptotic normality are established under conditions specifically tailored to economic forecasting. Through a series of Monte Carlo simulations, we evaluate the finite sample performance of penalized moment estimation in utilizing available instrument information effectively within both estimation and testing procedures. Additionally, we present an empirical analysis using data from the Survey of Professional Forecasters issued by the Federal Reserve Bank of Philadelphia to illustrate the practical utility of the suggested methodology. The results indicate that the proposed post-selection estimator for forecaster’s attitude performs comparably to the oracle estimator by efficiently incorporating available information. The power of rationality and symmetry tests leveraging penalized moment estimation is substantially enhanced by minimizing the impact of uninformative instruments. For practitioners assessing the rationality of externally generated forecasts, such as those in the Greenbook, the proposed penalized moment selection procedure could offer a robust approach to achieve more efficient estimation outcomes.
This study sought to examine the validity and reliability of the Turkish adaptation of the Peace, Equanimity, and Acceptance in the Cancer Experience (PEACE) scale. The primary objective was to evaluate the scale’s psychometric properties in measuring acceptance and coping among cancer patients.
Methods
The study included 90 cancer patients who completed the 12-item PEACE scale. The scale consists of two distinct subscales: the 5-item Peaceful Acceptance subscale and the 7-item Struggle With Illness subscale. Reliability was examined using Cronbach’s alpha and test-retest reliability (r = 0.916). Content validity was assessed using the content validity index (CVI = 0.84). Both exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) were employed to examine the underlying factor structure and evaluate model fit indices.
Results
The internal consistency for both subscales was satisfactory (Cronbach’s α = .78 for both). EFA indicated that the two subscales explained 53.169% of the total variance. CFA substantiated the two-factor model, demonstrating adequate model fit indices (χ2/df = 1.689,Root Mean Square Error of Approximation = 0.088). These findings collectively establish the Turkish version of the PEACE scale as a psychometrically sound tool.
Significance of Results
The PEACE scale is a valid and reliable instrument for assessing levels of acceptance and coping in cancer patients. Its use can help healthcare professionals better understand patients’ emotional states and guide interventions aimed at improving their quality of life.
Presents classification debates in psychiatry historically as a struggle between the classic perspective, which seeks to classify, and the romantic perspective, which rebels against classification. Presents the DSM-III project as an achievement of the classic perspective, which resolved one crisis only to bring forth another.
The older population is increasing. As age increases, many changes occur in individuals’ lives, physically, socially, psychologically, and this situation varies from individual to individual. The uncertainty about how this period will pass can cause anxiety in individuals. Therefore, valid and reliable tools are needed to investigate ageing anxiety and potential factors that increase this anxiety, especially in the ageing population. This article presents the results of a Turkish validity and reliability study of the Aging Anxiety Scale for Middle-Aged Adults. The study sample consisted of 293 middle-aged adults. Content validity, face validity and construct validity methods were applied to measure validity. Item analysis, Cronbach’s alpha and test-retest methods were used to measure internal consistency in the reliability analysis. The content validity index of the Aging Anxiety Scale for Middle-Aged Adults was found to be 0.97 based on expert opinion. Model fit indices were calculated as χ2 = 473.583, df = 275, χ2/df = 1.722, CFI = 0.95, GFI = 0.89, IFI = 0.95, TLI = 0.94, RMSEA = 0.05, RMR = 0.06 and SRMR = 0.05. The analysis results indicated that the scale model values were within accepted limits and that the 5-sub-factor and 26-item structure of the scale was confirmed. It was concluded that the Turkish version of the Aging Anxiety Scale for Middle-Aged Adults was a valid and reliable measurement tool to enable Turkish society to determine middle-aged individuals’ ageing concerns.
This study aimed to evaluate the validity and reliability of the Turkish version of the Contraceptive Self-Efficacy in Women in Sub-Saharan Africa (CSESSA) scale.
Background:
Contraceptive self-efficacy is a crucial predictor of utilization of modern contraceptive methods. However, the existing tools for comprehensively assessing contraceptive self-efficacy are limited. Methods: The sample of this methodological study consisted of 510 female participants of reproductive age. The translation and cultural adaptation of the scale were performed. For validity, content validity and construct validity were tested. For reliability, test-retest reliability, Cronbach’s alpha coefficient, and item-total score correlations were evaluated. Findings: The goodness-of-fit indices showed an overall acceptable fit with the three-factor model. Cronbach’s alpha for the overall CSESSA scale was 0.867, and for the three subscales, it ranged from 0.77 to 0.84. The scale’s test-retest reliability was found to be r = 0.83 (p < 0.001), and the item-total correlations score ranged from 0.495 to 0.646. The Turkish version of the scale is a valid and reliable tool to measure the contraceptive self-efficacy of women of reproductive age. This scale can provide a comprehensive understanding of self-efficacy by assessing various dimensions of contraceptive self-efficacy.
Arriving at evidence-based solutions requires strong evidence. Usually, this evidence will be derived from quality research, such as is often published in reputable scientific journals. But how do we know whether even these studies are good through and through? There is always the potential that pesky flaws, such as bias and confounding, might can beset even the most (otherwise) perfect of studies. This is why the methods taken to avoid bias and confounding are always well-described in all good published studies, as is the potential for remaining sources of error for which the design is (inevitably) unable to account, but which might still influence findings. There is always a bit of uncertainty about any evidence provided by studies and, to add to this, the very real possibility that we are not getting the full story at all times. In a phenomenon known as ‘publication bias’, even really high quality studies may not get published if they report non-significant results.
This methodological synthesis surveys study and instrument quality in L2 pronunciation research by scrutinizing methodological practices in designing and employing scales and rubrics that measure accentedness, comprehensibility, and intelligibility. A comprehensive coding scheme was developed, and searches were conducted in several databases. A total of 380 articles (409 samples) that employed 576 target instruments and appeared in peer-reviewed journals from 1977 to 2023 were synthesized. Results demonstrated, among other findings, strengths in reporting several listener and speaker characteristics. Areas in need of improvement include (a) more thorough evaluation and reporting of interrater reliability and instrument validity and (b) greater adherence to methodological transparency and open science practices. We conclude by discussing the implications of these findings for researchers and researcher trainers; by raising awareness of methodological and ethical challenges in psychometric research on L2 speech perception; and by providing recommendations for advancing the quality of instruments in this domain.
One of the most significant challenges in research related to nutritional epidemiology is the achievement of high accuracy and validity of dietary data to establish an adequate link between dietary exposure and health outcomes. Recently, the emergence of artificial intelligence (AI) in various fields has filled this gap with advanced statistical models and techniques for nutrient and food analysis. We aimed to systematically review available evidence regarding the validity and accuracy of AI-based dietary intake assessment methods (AI-DIA). In accordance with PRISMA guidelines, an exhaustive search of the EMBASE, PubMed, Scopus and Web of Science databases was conducted to identify relevant publications from their inception to 1 December 2024. Thirteen studies that met the inclusion criteria were included in this analysis. Of the studies identified, 61·5 % were conducted in preclinical settings. Likewise, 46·2 % used AI techniques based on deep learning and 15·3 % on machine learning. Correlation coefficients of over 0·7 were reported in six articles concerning the estimation of calories between the AI and traditional assessment methods. Similarly, six studies obtained a correlation above 0·7 for macronutrients. In the case of micronutrients, four studies achieved the correlation mentioned above. A moderate risk of bias was observed in 61·5 % (n 8) of the articles analysed, with confounding bias being the most frequently observed. AI-DIA methods are promising, reliable and valid alternatives for nutrient and food estimations. However, more research comparing different populations is needed, as well as larger sample sizes, to ensure the validity of the experimental designs.
This study aimed to design and validate a measurement tool in Turkish to assess the challenges perceived by individuals involved in the disaster response process, such as volunteers, health care personnel, firefighters, and members of nongovernmental organizations (NGOs).
Methods:
This methodological study was conducted from November 2023 through March 2024. The scale development process comprised item development, expert reviews, and language control, followed by the creation of a draft survey, pilot testing, application of the final scale, and statistical analyses. All stages, including validity and reliability analyses, were conducted in Turkish. While reliability analysis used Cronbach’s alpha, item-total correlations, intraclass correlation coefficients, test-retest reliability, Tukey’s additivity, and Hotelling’s T-squared tests, validity analysis included Exploratory and Confirmatory Factor Analyses (EFA/CFA). Software such as AMOS 22.0 and SPSS 22.0 were used to perform statistical analysis.
Results:
Findings indicated six dimensions with 23 items, with factor loadings ranging from 0.478 to 0.881. The CFA demonstrated acceptable fit indices. Test-retest analysis showed a robust positive correlation (r = 0.962) between the measurements. The scale’s total Cronbach’s alpha coefficient was 0.913. Sub-dimension reliability scores were calculated as follows: 0.865 for environmental and health, 0.802 for communication and information, 0.738 for organizational, 0.728 for logistical, 0.725 for individual, and 0.809 for other factors.
Conclusions:
This study showed that the Perceived Challenges in Disaster Response Scale (PCDRS), developed and validated in Turkish, is a reliable and valid measurement tool. It offers a foundation for understanding the challenges faced by disaster response teams and for formulating improvement strategies.
A prominent paradigm demonstrates many White Americans respond negatively to information on their declining population share. But this paradigm considers this “racial shift” in a single hierarchy-challenging context that produces similar status threat responses across conceptually distinct outcomes, undercutting the ability to both explain the causes of Whites’ social and political responses and advance theorizing about native majorities’ responses to demographic change. We test whether evidence for Whites’ responses to demographic change varies across three distinct hierarchy-challenging contexts: society at large, culture, and politics. We find little evidence any racial shift information instills status threat or otherwise changes attitudes or behavioral intentions, and do not replicate evidence for reactions diverging by left- versus right-wing political attachments. We conclude with what our well-powered (n = 2100) results suggest about a paradigm and intervention used prominently, with results cited frequently, to understand native majorities’ responses to demographic change and potential challenges to multiracial democracy.
Systematic searches of published literature are a vital component of systematic reviews. When search strings are not “sensitive,” they may miss many relevant studies limiting, or even biasing, the range of evidence available for synthesis. Concerningly, conducting and reporting evaluations (validations) of the sensitivity of the used search strings is rare, according to our survey of published systematic reviews and protocols. Potential reasons may involve a lack of familiarity or inaccessibility of complex sensitivity evaluation approaches. We first clarify the main concepts and principles of search string evaluation. We then present a simple procedure for estimating a relative recall of a search string. It is based on a pre-defined set of “benchmark” publications. The relative recall, that is, the sensitivity of the search string, is the retrieval overlap between the evaluated search string and a search string that captures only the benchmark publications. If there is little overlap (i.e., low recall or sensitivity), the evaluated search string should be improved to ensure that most of the relevant literature can be captured. The presented benchmarking approach can be applied to one or more online databases or search platforms. It is illustrated by five accessible, hands-on tutorials for commonly used online literature sources. Overall, our work provides an assessment of the current state of search string evaluations in published systematic reviews and protocols. It also paves the way to improve evaluation and reporting practices to make evidence synthesis more transparent and robust.
The philosophy of science suggests that, on a fundamental level, a scientific theory is only a good theory to the extent that it fulfils a set of basic criteria of adequacy. The study of the predictive mind thus should benefit from an examination and evaluation of the extent to which theories of prediction adhere to these ground rules. There are six reasonable criteria further elucidated in this chapter that are useful to assess the merit of a theory. These criteria are far from perfect benchmarks but, considered as a whole, provide a useful guideline to evaluate theories of prediction. Six criteria are applied to theories of prediction in the remainder of the book. These are: parsimony and simplicity, theoretical precision and mechanistic specificity, testability and predictive power, falsifiability, test of time, and utility. The credibility of a scientific theory is also intrinsically connected to the credibility of the experimental evidence supporting it. This book uses three criteria that provide good benchmarks: the reliability, generalizability, and the validity of the experimental evidence that has been collected.
Trust in the validity of published work is of fundamental importance to scientists. Confirmation of validity is more readily attained than addressing the question of whether fraud was involved. Suggestions are made for key stakeholders - institutions and companies, journals, and funders as to how they might enhance trust in science, both by accelerating the assessment of data validity and by segregating that effort from investigation of allegations of fraud.
While national rules regarding the scope, availability and issuance of utility models vary from country to country, most utility model regimes offer protection for tangible products, with many, but not all, jurisdictions excluding processes, biological materials and computer software from the scope of protection. The duration of utility model protection ranges from five to fifteen years, with most countries offering ten years of protection. In most countries, utility model applications are not formally examined and must simply disclose the product in question. Given the lack of examination, obtaining utility models is generally viewed as faster and cheaper than obtaining patents. This combination of speed and cost, in theory, makes utility models potentially attractive to small and medium enterprises (SMEs) that cannot afford to obtain full patent protection. Similar considerations have also been raised as advantageous to innovators in low-income countries.
The global landscape for existing utility model rights is a helpful starting point to the discussion on utility model innovation policy at the country-level as well as firm strategy. WIPO data indicates that approximately 3.0 million utility model applications were filed globally in 2022, a growth rate of 2.9% from the previous year and close to the global total of 3.5 million applications for standard patents. Only about one-half of the world’s countries provide for utility model systems, yet companies from around the world acquire these rights. Utility models are important players in the IP environment, and the unique qualities of the system and differential representation require specific analysis. In this chapter, we review existing empirical data and present additional data regarding UM filings and litigation worldwide. Our purpose is to provide background and context for the more detailed discussion in the remaining chapters in this book.
Psychopathology assessed across the lifespan often can be summarized with a few broad dimensions: internalizing, externalizing, and psychosis/thought disorder. Extensive overlap between internalizing and externalizing symptoms has garnered interest in bifactor models comprised of a general co-occurring factor and specific internalizing and externalizing factors. We focus on internalizing and externalizing symptoms and compare a bifactor model to a correlated two-factor model of psychopathology at three timepoints in a large adolescent community sample (N = 387; 55 % female; 83% Caucasian; M age = 12.1 at wave 1) using self- and parent-reports. Each model was tested within each time-point with 25–28 validators. The bifactor models demonstrated better fit to the data. Child report had stronger invariance across time. Parent report had stronger reliability over time. Cross-informant correlations between the factors at each wave indicated that the bifactor model had slightly poorer convergent validity but stronger discriminant validity than the two-factor model. With notable exceptions, this pattern of results replicated across informants and waves. The overlap between internalizing and externalizing pathology is systematically and, sometimes, non-linearly related to risk factors and maladaptive outcomes. Strengths and weaknesses to modeling psychopathology as two or three factors and clinical and developmental design implications are discussed.
Spiritual care is essential for the health and well-being of patients and their families, so nursing and midwifery students should have professional competency in this field.
Objectives
The present study aimed to translate the Spiritual Care Competency Self-Assessment Tool for nursing and midwifery students into Persian and evaluate its psychometric properties.
Methods
This study has a methodological study design.
Methods measures
The present study was conducted from July 4 to November 19, 2023, at the Faculty of Nursing and Midwifery in west of Iran. The tool was translated into Persian using the forward-backward translation method. The construct validity was examined using exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) with a total of 536 nursing and midwifery students. The internal consistency was assessed using Cronbach’s alpha coefficient. Also, the reliability of the tool was evaluated using the test–retest method. SPSS version 26 and Lisrel version 8 software were used in this study.
Results
Face and content validity was confirmed quantitatively and qualitatively. The results of EFA and CFA confirmed the tool with 4 factors and 28 items. CFA results indicated a well-fitting model (comparative fit index [CFI] = .97, Non-Normed Fit Index (NNFI) = .92, goodness of fit index [GFI] = .91, root mean square error of approximation [RMSEA] = .05, Standardized Root Mean Square Residual (SRMR) = .046). Pearson’s correlation coefficient confirmed a significant relationship between items, subscales, and the main scale. Also, Cronbach’s alpha coefficient (.968) and test–retest (.867) confirmed the reliability of the Persian version of the tool.
Conclusion
The present study showed that the Persian version of the EPICC Spiritual Care, with 4 factors and 28 items, was suitable for validation and that its psychometric properties were acceptable according to COSMIN criteria. In general, the results showed that the Persian version of the EPICC Spiritual Care is a valid and reliable tool that students, preceptors, and educators can use in clinical settings as a practical way of discussing and evaluating spiritual care competency in Iran.