1. Department of Communicative Disorders, University of Rhode Island, Kingston, RI 02881, USA
2. Haskins Laboratories, New Haven, CT 06519, USA
3. Department of Communicative Disorders, University of Alabama, Tuscaloosa, AL 35487, USA
4. Department of Psychology, Southern Connecticut State University, New Haven, CT 06515, USA
5. Department of Psychological Sciences, University of Connecticut, Storrs, CT 06269, USA