In the down-sized academic library of the twenty-first century, many librarians with little or no formal collection development training or experience are being entrusted with large departmental budgets, occasionally without the collaboration of a department liaison. How do new librarians, or librarians new to a discipline, deal with this challenge? This article attempts to provide both tools and suggestions to help librarians make the best collection decisions and to build relationships with their department(s). The subject focus is psychology and includes links to sample online collection development policies for psychology as well as print sources for psychology and other disciplines.