a: Mean average jaw displacement and standard error associated with the production of pop, puppet and puppypop by participants in the CAS, SD and TD groups. Number of participants included per token (pop, puppet, puppypop) = CAS (11, 10, 8), SD (11, 11, 9) and TD (11, 11, 10).
b: Mean average lip aperture and standard error associated with the production of pop, puppet and puppypop by participants in the CAS, SD and TD groups. Number of participants included per token (pop, puppet, puppypop) = CAS (8, 8, 8), SD (11, 11, 9) and TD (11, 11, 10).