Asymptotic cumulants of the Bayes modal estimators of item parameters using marginal likelihood in item response theory are derived up to the fourth order with added higher-order asymptotic variances under possible model misspecification. Among them, only the first asymptotic cumulant and the...

This paper examines the impact of population distribution on the costs of providing local telephone service. The study was undertaken to examine the extent to which price differences in international comparisons of telecommunications costs can be attributed to differences in the distribution of...