Differentiations according to the sample size of different reliability coefficients are examined. It is concluded that the estimates obtained by Cronbach alpha and teta coefficients are not related with the sample size, even the estimates obtained from the small samples can represent the population parameter. However, the Omega coefficient requires large sample sizes.
Ercan, Ilker; Yazici, Berna; Sigirli, Deniz; Ediz, Bulent; and Kan, Ismet
"Examining Cronbach Alpha, Theta, Omega Reliability Coefficients According to Sample Size,"
Journal of Modern Applied Statistical Methods:
1, Article 27.
Available at: http://digitalcommons.wayne.edu/jmasm/vol6/iss1/27