Parametric assumptions for statistical tests include normality and equal variances. Micceri (1989) found that data frequently violate the normality assumption; variances have received less attention. We recorded within-group variances of dependent ...

Various adaptive procedures for efficiently assessing the knowledge state of an individual have been developed within the theory of knowledge structures. These procedures set out to draw a detailed picture of an individual’s knowledge in a certain field ...

The use of latent curve models (LCMs) has increased almost exponentially during the last decade. Oftentimes, researchers regard LCM as a “new” method to analyze change with little attention paid to the fact that the technique was originally introduced as ...