Table 3.

Mean absolute error (MAE) for the individual and group data using NL/PL. Separated models were not computed for FEML5 and MALE5 because these continua did not demonstrate a threshold point.

Vowel Continua	Mean Absolute Error
	Separated Models	Unified Model
FEML1	0.0261	0.0387
FEML2	0.0212	0.0475
FEML3	0.0448	0.0462
FEML4	0.0214	0.0895
FEML5	----------	0.1234
MALE1	0.0224	0.0456
MALE2	0.0159	0.0621
MALE3	0.0263	0.0699
MALE4	0.0173	0.0336
MALE5	----------	0.0416
Average	0.0244	0.0598