Propensity score matching (PSM) has become a popular approach for research studies when randomization is infeasible. However, there are significant differences in the effectiveness of selection bias reduction among the existing PSM methods and, therefore, it is challenging for researchers to select an appropriate matching method. This current…

The technical complexities and sheer size of international large-scale assessment (LSA) databases often cause hesitation on the part of the applied researcher interested in analyzing them. Further, inappropriate choice or application of statistical methods is a common problem in applied research using these databases. This article serves as a…

In their study in 1990, Clark and Isaacs identified five properties and seven defining features that distinguished between English ostensible and genuine invitations. To see if Persian ostensible and genuine invitations could be distinguished by the same features and properties, the present study was carried out. 45 field workers observed and…