Journals by subject are automatically sorted alphabetically by title, but you can also sort titles by their journal rank (the app is using the SCImago Journal Rank).

Review articles summarise research on a topic and can be useful for literature review purposes. Look out for these or try adding keywords like "review" in your searches. Many journals produce them, and some specialise in this area, notably the Annual Reviews series of publications. 

Titles include Clinical Psychology, Pathology, Psychology and Public Health.