Table 4.

Results of the regression analyses predicting production variability and accuracy from lexical and phonological characteristics of words.

Variability		β Estimate	Standard Error	t	p
Word Frequency		−.245	.111	−2.20	.029*
PND		−.024	.010	−2.39	.018*
A-o-A		−.030	.022	−1.39	.165
Cons A-o-A		.423	.124	3.42	<.001*
Pos Avg		−12.828	6.864	−1.87	.063
Biph Avg		10.403	28.063	.37	.711
PWP (accuracy)		β Estimate	Standard Error	t	p
Word Frequency		.007	.014	.56	.577
PND		.003	.001	2.18	.030*
A-o-A		.007	.003	2.5	.013*
Cons A-o-A		−.149	.015	−9.68	<.0001*
Pos Avg		−.996	.854	−1.17	.244
Biph Avg		−1.48	3.491	−.42	.673

Note. PND = phonological neighborhood density; A-o-A = age-of-acquisition of word based on CDI normative data; Cons A-o-A = average age-of-acquisition of target consonants and consonant clusters; Pos Avg = average positional segment frequency; Biph Avg = average biphone frequency.

Significant predictors are marked with * and bolded.