Table 5.

Percentage (%) of definition responses receiving a score of 0, 1, 2, or 3 at each test point and a summary of overall correct responding based on scoring 2 and 3 as correct (as in the reported analysis) or 1, 2, and 3 as correct.

Test point	0	1	2	3	2 + 3 = correct	1 + 2 + 3 = correct
Pretreatment a	95	3	2	0	2	5
Final treatment session (36 exposures) b	55	11	20	14	34	45
Immediate posttreatment b	77	9	9	6	15	24
2-week posttreatment c	81	8	7	4	11	19

Note. Scoring was as follows: 0 points for an incorrect or absent definition, 1 point for appropriate use of the word in a sentence or a vague definition, 2 points for a conventional definition that lacks one or more critical elements, and 3 points for a complete and accurate definition including all critical elements.

^a Percentage out of 2,040 responses (60 words × 34 children).

^b Percentage out of 2,040 responses for target words only (i.e., excluding control words) summed across Treatments 1 and 2 (60 words × 34 children).

^c Percentage out of 2,009 responses for target words only (i.e., excluding control words) summed across Treatments 1 and 2 (60 words × 34 children; one child did not complete the second 2-week posttest, and data were missing for one word).