Access your favorite major news sites such as CNN or Science Daily. Alternatively, you can access websites that are known to have free articles such as Internet Archive. Websites that feature more science and psychology related articles will yield better results.
Type in "social psychology" as a keyword in the website's search bar.
Scan the articles for relevancy. Some sites will tell you how relevant they are to your search but others will need you to manually glance over the articles. As you do this you will know if the article is related to what you need usually by reading the first paragraph.