Scores for age comparison.

Within each condition, mean scores with SE and exact p-values for 2-tailed paired bootstrap tests (significant p-values in bold face type) are shown for phonological and sequence comparisons between ages for 9 birds. Age comparisons for the NS-UD condition are on the left half of the table, while those for the UD-UD condition are shown on the right. Results (top to bottom) are for motif-, clip-, and string-based analyses, followed by syllable scores.