| Questionnaires | Factors | Amount | Cronbach Alpha |
| BELAS | Communication apprehension (CA) | 12 | 0.933 |
| Fear of negative evaluation (FNE) | 6 | ||
| Test anxiety (TA) | 3 | ||
| General fear of BE classes (GA) | 12 | ||
| QBEECT | Classroom learning efficiency (CLE) | 5 | 0.871 |
| Teacher-student interaction (TSI) | 7 | ||
| Student-student intercommunication (SSI) | 8 | ||
| Teacher-student affective intercommunication (TSAI) | 7 | ||
| Students’ cognition of learning (SCL) | 2 |