Table 4.
Group and individual results for blocked (B1–B4) and spaced (S1–S3) conditions.
| Participants | Target forms |
Control forms |
|||||||
|---|---|---|---|---|---|---|---|---|---|
| Pretreatment use (%) | End-treatment use (%) | Effect size (d) a | Follow-up use (%) | Total spontaneous productions | Unique spontaneous productions | Pretreatment use (%) | End-treatment use (%) | Effect size (d) a | |
| B1 | 0 | 100 | 17.3 | 80 | 30 | 21 | 10 | 0 | −1.7 |
| B2 | 6.6 | 86.7 | 5.3 | 100 | 73 | 61 | 3.3 | 0 | −0.6 |
| B3 | 0 | 20.0 | 0.8 | 40 | 14 | 12 | 0 | 0 | 0 |
| B4 | 3.3 | 0 | −0.6 | 0 | 6 | 4 | 0 | 0 | 0 |
| M | 2.5 | 51.7 | 5.7 | 55.0 | 30.8 | 24.5 | 3.3 | 0 | −0.6 |
| SD | 3.2 | 49.1 | 8.1 | 44.3 | 29.9 | 25.3 | 4.1 | 0 | 0.8 |
| Spaced condition | |||||||||
| S1 b | 3.3 | 100 | 17.3 | 100 | 1 | 1 | 0 | 0 | 0 |
| 0 | 100 | 17.0 | 100 | 19 | 15 | 0 | 0 | 0 | |
| S2 | 6.7 | 90 | 8.3 | 90 | 15 | 12 | 3.3 | 0 | −0.6 |
| S3 | 23.3 | 57 | 2.9 | 70 | 5 | 5 | 10 | 40 | 3.0 |
| M | 10.5 | 82.3 | 9.5 | 86.7 | 9.3 | 8.5 | 4.4 | 13.3 | 0.8 |
| SD | 11.3 | 22.5 | 7.2 | 15.3 | 5.1 | 4.9 | 5.1 | 23.1 | 1.9 |
a
Treatment-related change (d) is calculated as (mean end-treatment use – mean pretreatment use) / the end-treatment standard deviation.
b
S1 was treated for two target forms within the treatment period (see Table 2). The two values for S1 were averaged to obtain means and standard deviations for the spaced condition.