Conditional Reliability of Weighted Test Scores on a Bounded <i>D</i> -Scale

Based on previous research on conditional reliability for number-correct test scores, conditioned on levels of the logit scale in item response theory, this article deals with conditional reliability of classical-type weighted scores conditioned on latent levels of a bounded scale. This is done in the framework of the <i>D</i>-scoring method of measurement (<i>D</i>-scale, bounded from 0 to 1). Along with the conditional reliability of weighted <i>D</i>-scores, conditioned on latent levels of the <i>D</i>-scale, presented are some additional measures of precision-conditional standard error, conditional signal-to-noise ratio, and marginal reliability. A syntax code (in R) for all computations is also provided.