Disney's 'Frozen' and the science behind why kids can't 'let it go'

Abbey Hull for redOrbit.com – Your Universe Online Witnessing Frozen's record-breaking $1.2 billion dollars at the box office (and title as the number one animated film of all time), psychologist Maryam Kia-Keating began to wonder: Why? So, curious, she asked her four-year-old daughter what the movie's popular song "Let It Go" was essentially about. "It's about…