To be truly cost effective and give your executive search the clout of the big guys, be sure the assessment process is set up so that candidates receive, complete and return the assessment remotely. With this approach, you can consider candidates from anywhere in the country (the world!), and, after culling out the obvious rejects from the resumes, use the assessment to narrow down who to interview. A richer pool of applicants, less time spent on interviewing and no hordes of unscreened candidates (some of them from your competitor's firm) wandering through your offices. If you use a search firm to find candidates, require that the firm provide you with an executive assessment report for each candidate, conducted by an outside assessor, before you spend time interviewing anyone they refer.