Cronbach’s α, Revelle’s β, and Mcdonald’s ωH: their relations with each other and two alternative conceptualizations of reliability

Zinbarg, Richard E.; Revelle, William; Yovel, Iftah; Li, Wenwen

doi:10.1007/s11336-003-0974-7

Cited by 1,235 publications

(1,056 citation statements)

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“…Raykov's (1997a), an internal consistency estimate unaffected by violation of this assumption, yielded reliability estimates slightly higher. Although the small magnitude of difference was consistent with prior work on these coefficients (Raykov, 1997a(Raykov, , 1997b; see also Zinbarg et al, 2005), these analyses do suggest it may slightly underestimate reliability for some subcomponents.…”

Section: Discussionsupporting

confidence: 84%

“…For instance, even though is intended for unidimensional scales, these results clearly show that was high for the multifactorial NEO-FFI domains. It is well known in the psychometric literature that is not a measure of dimensionality or homogeneity (Cortina, 1993;Streiner, 2003a), and for this reason, alternative estimates of reliability provide a better estimate of true reliability when scales are not con-generic or essentially tau equivalent (Zinbarg et al, 2005; see also Bentler, in press).…”

Section: Discussionmentioning

confidence: 99%

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Bandwidth and Fidelity on the NEO-Five Factor Inventory: Replicability and Reliability of Item Cluster Subcomponents

Chapman

2007

Journal of Personality Assessment

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Many users of the NEO-Five Factor Inventory (NEO-FFI; Costa & McCrae, 1992) are unaware that Saucier (1998) developed item cluster subcomponents for each broad domain of the instrument similar to the facets of the Revised NEO Personality Inventory (Costa & McCrae, 1992). In this study, I examined the following: the replicability of the subcomponents in young adult university and middle-aged community samples; whether item keying accounted for additional covariance among items; subcomponent correlations with a measure of socially desirable responding; subcomponent reliabilities; and subcomponent discriminant validity with respect to age-relevant criterion items expected to reflect varying associations with broad and narrow traits. Confirmatory factor analyses revealed that all subcomponents were recoverable across samples and that the addition of method factors representing positive and negative item keying improved model fit. The subcomponents correlated no more with a measure of socially desirable responding than their parent domains and showed good average reliability. Correlations with criterion items suggested that subcomponents may prove useful in specifying which elements of NEO-FFI domains are more or less related to variables of interest. I discuss their use for enhancing the precision of findings obtained with NEO-FFI domain scores.Most researchers have agreed that personality traits can be measured in hierarchical tiers that vary in generality (Cattell & Krug, 1986;Costa & McCrae, 1997;Eysenck, 1998;Goldberg, 1990). Traits at higher levels of multistratum taxonomies are merely composites of more fine-grained specific traits. For example, within the Five Factor Model of personality (Costa & McCrae, 1997;Digman, 1990;Goldberg, 1990;John & Srivastava, 1999), the broad trait of Conscientiousness is composed of narrow attributes such as self-discipline, achievement orientation, and orderliness. The commonly used Revised NEO Personality Inventory (NEO-PI-R; Costa & McCrae, 1992) permits users to capture information about such higher order broad traits as well as the lower order, narrow traits that compose them (cf. Costa & McCrae, 1995).The 60-item NEO-Five Factor Inventory (NEO-FFI; Costa & McCrae, 1992) is a brief version of the NEO-PI-R designed to provide speedy and convenient measurement of the Five Factor Model domains; however, it does so by relinquishing information about the narrow traits that comprise each broad factor. To remedy this, Saucier (1998) derived item cluster subcomponents for the NEO-FFI that provided a more specific level of trait measurement. These subcomponents are somewhat similar, although not as specific, as the Copyright © 2007 facets of the full length NEO-PI-R and are listed in Table 1. In their development, these subcomponents evidenced strong average internal consistency comparable to NEO-PI-R facets (e.g., an average Cronbach's of .70 in a development sample and .66 in a crossvalidation sample compared to average NEO-PI-R facet of .70) and captured the majority (a...

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Section: Discussionsupporting

confidence: 84%

Section: Discussionmentioning

confidence: 99%

Bandwidth and Fidelity on the NEO-Five Factor Inventory: Replicability and Reliability of Item Cluster Subcomponents

Chapman

2007

Journal of Personality Assessment

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“…El alfa de Cronbach es la medida de consistencia interna más popular en los estudios de validación en publicaciones biomédicas (15,45). Sin embargo, el alfa de Cronbach puede subestimar la consistencia interna cuando no se cumple el principio de equivalencia tau, es decir, cuando los incisos muestran coeficientes muy disímiles en la matriz de una solución factorial, caso en el que el omega de McDonald es una mejor medida de la consistencia interna.…”

Section: Análisis Estadísticounclassified

Reliability and dimensionality of PHQ-9 in screening symptoms of depression among health science students in Cartagena, 2014

et al. 2016

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: diseño del proyecto de investigación; obtención, análisis e interpretación de los datos Mauricio Hernández-Carrillo: procesamiento estadístico de los datos Todos los autores participaron en la escritura del manuscrito.Confiabilidad y dimensión del cuestionario de salud del paciente (PHQ-9) para la detección de síntomas de depresión en estudiantes de ciencias de la salud en Cartagena, 2014 Introducción. La detección de los síntomas de depresión en estudiantes universitarios mediante instrumentos válidos es necesaria. El cuestionario de salud del paciente (Patient Health Questionnaire-9, PHQ-9) es confiable y ha sido validado para dicha detección en el contexto universitario, pero se desconoce su desempeño psicométrico en Colombia. Objetivo. Estimar la confiabilidad y la dimensión del PHQ-9 como instrumento de detección de los síntomas de depresión en estudiantes del área de ciencias de la salud de una universidad de Cartagena, Colombia. Materiales y métodos. Se estudió la estructura factorial y la confiabilidad del PHQ-9 en una muestra de 550 estudiantes para una prevalencia esperada de síntomas depresivos con importancia clínica de 25 %, un nivel de confianza de 95 %, y de error de 3 %. Se utilizó la versión en español del PHQ-9 con autorización de los autores. Se hizo un análisis factorial confirmatorio, y se estimó la consistencia interna con el coeficiente alfa Reliability and dimensionality of PHQ-9 in screening depression symptoms among health science students in Cartagena, 2014Introduction: Depression among university students must be screened with valid instruments. The Patient Health Questionnaire (PHQ-9) is reliable and valid for screening depression in a university context; however, its psychometric performance in Colombia is unknown. Objective: To estimate the reliability and dimensionality of PHQ-9 as a screening instrument for depressive symptoms among health sciences students of a university in Cartagena, Colombia. Materials y methods:We analyzed the factorial structure and reliability of the PHQ-9 in a sample of 550 students for expected prevalence of clinically-meaningful depressive symptoms (CMDS) of 25% with a confidence level of 95% and an error level of 3%. We used the free Spanish version of PHQ-9 for Colombia, authorized by its creators. A confirmatory factorial analysis, and an estimate of internal consistency using Cronbach´s alfa and McDonald´s omega were obtained. Results:We analyzed 541 surveys. The average age of the group was 20.18 (SD=2.59) years old, 354 (63.77%) participants were women and 196 (36.23%) men. CMDS prevalence was 27.3%. The

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“…O alfa e o ômega são estimados com base em relações bisseriais (entre variáveis ordinais e contínuas) e policóricas (variáveis ordinais). A utilização desses dois indicadores deve-se ao fato de o alfa ser considerado o menor e o ômega, o maior valor atribuível à consistência interna, sendo o cálculo baseado na proporção da variância comum dos itens do instrumento [28][29][30] .…”

Section: Propriedades Psicométricasunclassified

Tradução e validação de questionário de função sexual na gravidez (PSFQ)

Amaral¹,

Monteiro²

2014

Rev. Bras. Ginecol. Obstet.

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ResumoOBJETIVO: Adaptar o Pregnancy and Sexual Function Questionnaire (PSFQ) para uso no Brasil, além de avaliar suas propriedades psicométricas. MÉTODOS: Foi realizado um estudo de adaptação e validação com mulheres no último trimestre de gestação, residentes em Rio Branco, Acre. O questionário foi traduzido para a língua portuguesa, revisado e avaliado por um grupo de especialistas, tendo sido realizado um pré-teste. A validação do constructo do instrumento foi avaliada por análise fatorial, a consistência interna, pelos coeficientes alfa de Cronbach e ômega de McDonald e a reprodutibilidade, pela estatística kappa por teste-reteste em uma amostra das gestantes. RESULTADOS: A análise fatorial demonstrou a presença de seis domínios: subjetividade, dor e desconforto; frequência e receptividade; desejo; satisfação; orgasmo e estímulo. A consistência interna segundo o alfa foi de 0,6, enquanto na análise do ômega foi de 0,7. Na amostra, o valor de kappa foi superior a 0,7 em todas as questões. CONCLUSÃO: A versão em português do PSFQ pode ser utilizada para avaliar a função sexual durante a gravidez. Abstract PURPOSE:To adapt the Pregnancy and Sexual Function Questionnaire (PSFQ) for use in Brazil and to evaluate its psychometric properties. METHODS: An adaptation and validation study was performed with women in the last trimester of pregnancy living in Rio Branco, Acre. The questionnaire was translated into Portuguese, reviewed and evaluated by specialists, and a pretest was carried out. Construct validity was evaluated by factor analysis; internal consistency was estimated by Cronbach's alpha coefficient and MacDonald's omega, and reproducibility was evaluated by the kappa statistics and test-retest in a sample of pregnant women. RESULTS: Factor analysis identified the following six domains: subjectivity, pain and discomfort; frequency and receptivity; desirability; satisfaction; orgasm; and stimulus. The internal consistency by Cronbach's alpha was 0.6, while MacDonald's omega was 0.7. The kappa value was higher than 0.7 in all questions. CONCLUSION: The Portuguese version of the PSFQ was considered to be adequate for evaluating sexual function during pregnancy.

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Cronbach’s α, Revelle’s β, and Mcdonald’s ωH: their relations with each other and two alternative conceptualizations of reliability

Cited by 1,235 publications

References 25 publications

Bandwidth and Fidelity on the NEO-Five Factor Inventory: Replicability and Reliability of Item Cluster Subcomponents

Bandwidth and Fidelity on the NEO-Five Factor Inventory: Replicability and Reliability of Item Cluster Subcomponents

Reliability and dimensionality of PHQ-9 in screening symptoms of depression among health science students in Cartagena, 2014

Tradução e validação de questionário de função sexual na gravidez (PSFQ)

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