Abstract. This simulation study compares different strategies to solve the problem of underestimating standard errors in the Poisson regression model when overdispersion is present. The study analyses the importance of sample size, Poisson distribution ...

Abstract. Challenges in evaluating nonlinear effects in multiple regression analyses include reliability, validity, multicollinearity, and dichotomization of continuous variables. While reliability and validity issues are solved by employing nonlinear ...

Abstract. This paper examines IRT scale transformations and IRT scale-linking methods used in the nonequivalent groups with anchor test (NEAT) design to equate two tests, X and Y. It proposes a unifying approach to the commonly used IRT linking methods: ...

Abstract. In this article, we first analyze the respondents' beliefs about the social desirability of ten racial attitude items from the German General Social Survey (ALLBUS). We found these beliefs, which serve as the basis for the incentives for social ...