A good start when you are seaching for articles within a subject field is to go to a journal that publish review articles. Here are some examples. You can also get results by searching for "Literature Review" in the Subject field within the PsycINFO database.
Consider looking at SBU (Statens beredning för medicinsk och social utvärdering), the national authority that assesses health care and social service interventions from a broad perspective. They publish their findings in systematic reviews.
We've collected interesting encyclopedias within all fields for the Social Sciences. From our Research Methods guide.
See all databases availabe at Lund University in Databases A-Z.