Welcome to the Tweety Language Development Lab at the University of Arizona! Along with our sister lab, the Tigger Child Cognition Lab, we study cognition in infants ages 4 months to 18 months and in toddlers ages 2 to 5 years. In the Tweety Language Development Lab, we study how infants find patterns in auditory input, primarily language, and how toddlers combine complex abilities to become master language users. We are always looking for new research particpants so please feel free to call or email us if you think your child may be eligible for one of our studies.