32 There are many aids for lay persons devoted to the apostolate, namely, study sessions, congresses, periods of recollection, spiritual exercises, frequent meetings, conferences, books, and periodicals directed toward the acquisition of a deeper knowledge of sacred Scripture and Catholic doctrine, the nourishment.of spiritual life, the discernment of world conditions, and the discovery and development of suitable methods. These aids in formation take into consideration the various types of the apostolate in the milieu where it is exercised. For this purpose also centers or higher institutes have been erected, and they have already proved highly successful. The most holy council rejoices over projects of this kind which are already flourishing in certain areas, and it desires that they may be promoted also in other areas where they may be needed. Furthermore, centers of documentation and study not only in theology but also in anthropology, psychology, sociology, and methodology should be established for all fields of the apostolate for the better development of the natural capacities of the laity-men and women, young persons and adults.
Source: Apostolicam Actuositatem (Vatican.va)