Results 1 to 10 of about 350,704 (260)

On “Estimates of Coefficient Alpha for Finite Populations of Items”

Educational and Psychological Measurement, 1972
openaire   +1 more source

Is coefficient alpha robust to nonnormal data? [PDF]

Frontiers in Psychology, 2012
Coefficient alpha has been a widely used measure by which internal consistency reliability is assessed. In addition to essential tau-equivalence and uncorrelated errors, normality has been noted as another important assumption for alpha.
Yanyan eSheng, Zhaohui eSheng
doaj   +5 more sources

Coefficient Alpha

Europe's Journal of Psychology, 2013
Heavy reliance on Cronbach’s alpha has been standard practice in many validation studies. However, there seem to be two misconceptions about the interpretation of alpha.
Panayiotis Panayides
doaj   +4 more sources

Meta-analysis of coefficient alpha for scores on the Narcissistic Personality Inventory. [PDF]

PLoS ONE, 2018
The Narcissistic Personality Inventory (NPI) has greatly facilitated the scientific study of trait narcissism. However, there is great variability in the reported reliability of scores on the NPI.
Brian K Miller, Kay M Nicols, Silvia Clark, Alison Daniels, Whitney Grant   +4 more
doaj   +2 more sources

Cronbach’s alpha reliability coefficient

Psychiatry and Behavioral Sciences, 2016
In statistics, Cronbach’s alpha coefficient is used as an estimate of the reliability of a psychometric test. It might have calculated either for each item in the scale or an average value for all items in the scale.
Selim Kılıc
doaj   +2 more sources

Coefficient Alpha: The Resistance of a Classic

Psicothema, 2023
During the 20th century the alpha coefficient (α) was widely used in the estimation of the internal consistency reliability of test scores. After misuses were identified in the early 21st century alternatives became widespread, especially the omega coefficient (ω).
Doval, Eduardo, Viladrich, Carme, Angulo-Brunet, Ariadna   +2 more
openaire   +6 more sources

دراسة إمکانية التنبؤ بمعاملات ثبات ألفا الرتبي وثيتا الرتبي وأوميجا وأکبر حد أدنى بمعلومية معامل ألفا لکرونباخ لأحجام عينات مختلفة Investigating the Possibility of Predicting Ordinal Alpha, Ordinal Theta, Omega, and the Greatest Lower Bound Reliability with Cronbach's Alpha Coefficient for Different Sample Sizes [PDF]

مجلة التربیة وثقافة الطفل, 2022
The current study aimed at investigating the possibility of predicting ordinal alpha, ordinal theta, omega, and the greatest lower bound reliability with Cronbach's alpha coefficient through verifying the correlative relationship between the alpha ...
أ.م.د/ محمد إبراهيم محمد
doaj   +1 more source

Typology of Deflation-Corrected Estimators of Reliability

Frontiers in Psychology, 2022
The reliability of a test score is discussed from the viewpoint of underestimation of and, specifically, deflation in estimates or reliability. Many widely used estimators are known to underestimate reliability.
Jari Metsämuuronen, Jari Metsämuuronen
doaj   +1 more source

Confidence Intervals for the Coefficient Alpha Difference from Two Independent Samples (Groups) [PDF]

Tutorials in Quantitative Methods for Psychology, 2023
Four different bootstrap methods for estimating confidence intervals (CIs) for a coefficient alpha difference from two independent samples (groups) were examined.
Padilla, Miguel A.
doaj   +1 more source

Deflation-Corrected Estimators of Reliability

Frontiers in Psychology, 2022
Underestimation of reliability is discussed from the viewpoint of deflation in estimates of reliability caused by artificial systematic technical or mechanical error in the estimates of correlation (MEC).
Jari Metsämuuronen
doaj   +1 more source