Group | Proficiency level | PET score range | Tier | N | Studying English (year) |
---|---|---|---|---|---|
CG | Higher ability | 21–25 | 1 | 5 dyads | > 14 |
Middle ability | 17–20 | 2 | 6 dyads | 11–14 | |
Lower ability | 10–16 | 3 | 6 dyads | 9–11 | |
IG | Higher ability | 21–25 | 1 | 10 | > 14 |
Middle ability | 17–20 | 2 | 12 | 11–14 | |
Lower ability | 10–16 | 3 | 8 | 9–11 |