Interests are measured with Vocational Interests Test, to guide in choosing professional careers by Frederick Kuder and other authors. This research paper aims to identify the predominant interests in a same Psychology group of students; in 2010 and 2011 following Kuder's proposal as a basis for being professionals within Salvadorian context. The first measure introduces fash-ion more in Social Service (Mo= 59), Persuasive (Mo= 40), Literary (Mo= 20) and Office work (Mo= 51). And Social Service (Mo= 64), Persuasive (Mo= 42) and