Using the 'refine your results' options in PsycINFO...

...can greatly increase the number and quality of results you find. As an example, let's imagine we are looking for articles about aggressive behaviour in teenage girls. You could try running searches for 'aggressive behaviour and teenage girls' (which currently finds just 12 results), 'aggressive behaviour and adolescent girls' (162 results) and so on. However, to really dig down into PsycINFO you need to make use of the options available to refine your search. In this example, the route to better results is to run a search for 'aggressive behaviour' (which finds over 29000 results) and then refine your search using the 'limiters' which appear to the left of the results list. First, click on 'gender' from the list of limiters and choose 'female'. This reduces your list to around 8000 results, all of which cover aggressive behaviour among females. Next, choose the 'age' limiter and select 'adolescence (13-17)'. This then finds just over 2100 results, all about aggressive behaviour in teenage girls. That's just about 2000 more than your original searches found!