I registered my child several months ago, but have not yet been called to participate. Why?

We recruit from ages 0 to 12 years so that we have a pool of interested families from which to draw. However, most of our studies involve particular age ranges – for example, 3 to 6 years old. Your child may not fit into one of the age ranges that we are using at the moment. If you ever would like information about what ages are currently being used, feel free to call or email.