Late last week, Paul Feig - director of the upcoming Ghostbusters reboot - released an image via twitter of Mattel dolls based on the film's four female stars.

Many fans are going wild, especially because female characters don't always make it to the shelves of Toys R Us. And if you want a clear example of this, google the hashtag #WHEREISREY?

For more on why we should care about female action figures, Take Two's Alex Cohen spoke to Deborah Best,  a professor of psychology at Wake Forest University and a specialist in gender stereotypes in young children.