Some generally decent advice at the LSE Impact of Social Sciences blog

An informative title for an article or chapter maximizes the likelihood that your audience correctly remembers enough about your arguments to re-discover what they are looking for. Without embedded cues, your work will sit undisturbed on other scholars’ PDF libraries, or languish unread among hundreds of millions of other documents on the Web. Patrick Dunleavy presents examples of frequently used useless titles and advises on using a full narrative title, one that makes completely clear your argument, conclusions or findings.