. Author manuscript; available in PMC: 2014 Apr 11.

Published in final edited form as: J Speech Lang Hear Res. 2009 Aug 28;52(6):1530–1554. doi: 10.1044/1092-4388(2009/08-0020)

Table 4.

Planned comparisons using a Mann–Whitney rank sum test to compare behavior by age group for differences in complexity of jaw movement.

Comparison	Spectral energy description	T	p
Chewing × Age Group	Often 1 peak of energy	42,336	.141
Multisyllabic × Age Group: Age 1 > Age 2	Age 1 had more samples of 1+ peaks	29,752	.034^a

Note. α = .05.

Statistically significant.