PsycINFO - Identifies articles, books and dissertations in psychology and related subjects, many with links to full text, 1806 to current.
PubMed - Identifies articles in medicine, biomedicine, neuroscience and psychology. If you haven't used PubMed before or are having problems, PubMed Quick Tours (1 to 3 minutes) may help. Feel free to contact me if you still have questions or would like a personal introduction to PubMed.
Turning Research into PracticeSearch engine to retrieve evidence-based research from medical journals, Cochrane Systematic reviews, clinical guidelines, etc.
Web of Science - Identifies journal articles and cited references to research publications from all disciplines, some with links to full text.
Browse general neuroscience journals using Browzine
Browse developmental psychology journals using Browzine
Literatures reviews provide an overview to an area of research, identify who is working in that area, and cite relevant published work.