I am a single mom with a full-time job. I need to hire a baby sitter to pick up my daughter from school and stay with her until I get home. What are some good qualities I should look for in a baby sitter?

My favorite baby sitters, whom I call "helpers," are senior education majors at the local college. They enjoy kids, know about child development and provide a stimulating environment. Be sure they have experience, good references and a good driving record. My kids have developed close relationships with such students.

Dr. Patti Zomber is a child psychologist based in Marina del Rey, Calif. She has written numerous articles about parenting, and she is a contributing editor on NestleFamily.com as well as the editor of the Los Angeles Psychologist journal.

Please Note: This Expert Q&A feature is intended to impart general child development information and mealtime tips. This is not to take the place of medical consultation and you should consult your doctor for medical advice or services.