Jeremy has recently been hired at Pebbles People, an accounting firm, as its new human resource manager. Jeremy is first charged with improving the firm’s hiring practices. To choose the most intelligent candidates, the company's selection process has emphasized bringing in graduates from prestigious universities for interviews and grilling the candidates with tough brain teasers and other difficult questions. Jeremy concludes that the company is not using interviews as effectively as it should be. Which recommendation would be most relevant in this situation?