Final answer:
Firms should use certified psychologists to ensure compliance with EEO laws and prevent discrimination in the hiring process. Certified psychologists also help ensure the validity and reliability of selection tests.
Step-by-step explanation:
When developing and validating selection tests, firms should most likely use certified psychologists to ensure compliance with EEO laws.
Compliance with Equal Employment Opportunity (EEO) laws is important to prevent any form of discrimination in the hiring process. Certified psychologists understand these laws and can design tests that are fair and unbiased.
Using certified psychologists also helps in ensuring the validity and reliability of the selection tests, which are crucial for making accurate hiring decisions.