Kids learn by example, so you want your babysitter or nanny to model cheerful behavior—just like you do. When you interview, pay attention to these cues from Candi Wingate, president of Nannies4Hire.com.

A Happy Face
A genuine smile and frequent eye contact—not only when speaking with you but when engaging your child, too—are good initial indicators of positivity. A sourpuss? That’s a warning sign.

Upbeat Problem-solving
Ask what she’d do in a specific discipline situation. You want an answer that exhibits a positive, solution-based approach rather than a punishing one.

The Silver Lining
Have the candidate tell you about difficulties with her previous child-care positions. Notice whether she’s all complaints or offsets the tough moments with lessons learned and positive outcomes.