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. Author manuscript; available in PMC: 2011 Jul 1.
Published in final edited form as: J Mem Lang. 2010 Jul 1;63(1):100–116. doi: 10.1016/j.jml.2010.02.003

Appendix A.

Mean Difference Scores for each Semantic Category within each Phonotactic Probability/Neighborhood Density Condition in Experiment 1

1 Phonotactic Probability Effect: Rare > Common 2 Neighborhood Density Effect: Dense > Sparse
All Ages, Collapsed Across both Times All Ages, Collapsed Across both Times
Dense = No Sparse = Yes Common = Yes Rare = No
Toys .08 −.03 −.07 .04
Horns −.07 .09 .04 −.12
Candy −.04 .02 .10 .04
Pets .02 .14 .18 .06
All Items 0 .07 .06 −.01

Note:

1

Phonotactic Probability Effect: Difference scores were calculated for semantic categories by subtracting the accuracy for common nonwords from the accuracy for rare nonwords collapsed across both time points for all ages. Positive difference scores for sparse nonwords indicate that the item data converged with the participant analysis (i.e., Rare > Common for sparse nonwords).

2

Neighborhood Density Effect: Difference scores were calculated for semantic categories by subtracting the accuracy for sparse nonwords from the accuracy for dense nonwords collapsed across both time points for all ages. Positive difference scores for common sound sequences indicate that the item data converged with the participant analysis (i.e., Dense > Sparse, for common sound sequences).