If you are the parent of a toddler or preschooler, chances are you know a thing or two about tantrums. While those epic meltdowns can certainly be part of "normal" toddler behavior, they are still maddening, stressful, and exhausting--for everyone involved. What can you do to keep your cool and help your child calm down? Rebecca Schrag Hershberg, child psychologist and mother of two, has a unique understanding of both the science behind tantrums and...