Introduction to the vol. 48, no. 2, 2021

Abstract

In this issue, we have the following one invited paper, four original papers, two notes, one short note, and the special issue "e-Testing from artificial intelligence approach" by Masaki Uto and Kazuo Shigemasu.The invited paper "Assessing Generalizability and Variability of Single-Case Design Effect Sizes using Two-Stage Multilevel Modeling including Moderators" by Mariola Moeyaert and Panpan Yang introduces an innovative meta-analytic approach, two-stage multilevel meta-analysis that considers the hierarchical structure of single-case experimental design (SCED) data (Moeyaert and Yang 2021). This approach is unique as it is suitable to include moderators at the intervention level, participant level, and study level, and is therefore especially recommended for the meta-analyst interested in moving beyond estimating the overall intervention effectiveness.The original paper "An augmented EM algorithm for monotonic Bayesian networks using parameterized conditional probability tables" by Seyfullah Tingir and