Personality measures on the other hand have no right answers. Be yourself, answer fairly and sensibly, but NOT flippantly. Don't try to second guess the aim of the questions. If you've been prescribed drugs that make you drowsy, tell the test administrator. Remember that tests are only part of the selection process and many graduate recruiters do not use tests at all.
Tests can only test so much.
Can be purchased from Student Services Reception which also holds reference file of sample tests.