Table 2.
Classification of studies based on caption modes.
| Caption modes | Empirical studies | Effects of caption modes (in declining order) |
|---|---|---|
| First direction (reduction) | ||
| Keyword captions (KC) | Montero Perez et al., 2015 | KC, FC |
| Teng, 2019 | FC, KC, 0 | |
| Second direction (addition) | ||
| Glossed (full) captions (GFC)/ glossed keyword caption (GKC) | Montero Perez et al., 2018 | GKC, KC, FC, 0 |
| Teng, 2020 | GFC, FC, GKC, KC | |
| Hsu et al., 2013 | GFC, GKC, 0 | |
| Annotated captions (AC) | Aldera and Mohsen, 2013 | AC, FC, 0 |
| Mohsen, 2016b | AC, AT | |
| Enhanced captions (EC) | Montero Perez et al., 2014b | EC, KC, FC, 0 |
| Hsieh, 2020 | EGC, FC, EC, 0, FCNA | |
| Cintrón-Valentín and Garciá-Amaya, 2021 | EC, 0 | |
| Majuddin et al., 2021 | EC, FC, 0 | |
FC, Full caption; 0, No caption; AT, Annotated transcript; EGC, Enhanced and glossed caption; and FCNA, Full caption without audio.