摘要：One of the most important stages of a meta-analytic research is correct recognition of research material, i.e. appropriate selection of investigation methods. This stage is, first of all, characterized by unlimited research space, which, in consequence, results in using unlimited quantity of research for meta-analysis. The basic distinctness of traditional quantitative reviews is limited possibility for integration. That is why, in such reviews, selection of research studies is neither located in the centre of attention of a researcher, nor in that of a reader. This is, because the essence of reviews is systematizing and describing the results of research studies, while integration is more qualitative than quantitative. The paper discusses the methodological discussion of criteria for the collection of empirical evidence for meta-analysis. It is pointed out to some of the cognitive and practical benefits of meta-analytical research approach.
