Author defines catechetics as a research on catechesis and points, that the definition of catechetics as a science is conditional upon the comprehension of catechesis in the Church, which was altering through the centuries. Therefore, catechetics was beeing defined either as a pedagogical or a theological science. In the secondcase, catechetics is implied either as a subdiscipline of the pastoral theology orautonomous and interdisciplinary theological science. Pronouncing for this last answer, the author indicates the relation between catechetics and its supporting scientific disciplines: pedagogics, sociology and psychology, elucidates the pecularity ofcatechetical deduction and itemises models of catechetical research.