A pacifier can be great for calming a fussy baby -- and it's also been shown to help reduce the risk of sudden infant death syndrome (SIDS) when used at night. But what if your infant refuses it? Use reverse psychology, says Harvey Karp, M.D., creator of the DVD The Happiest Baby on the Block: Put the paci in your child's mouth, and as soon as she starts to suck, pretend to take it out by moving it slightly. "The baby's reflex will be to suck harder and in a more coordinated way," says Dr. Karp. The response is similar to the one your baby has after she falls asleep while feeding -- if you try to take the breast or bottle away, she starts sucking again. Try the pacifier technique directly after feedings, when your baby's no longer hungry but still in a sucking mood. After a day or two of several fake-outs, she should be loving the paci.