Here you can find the Story World Absorption Scale in its English, Dutch and German versions.
Each of these versions has been thoroughly validated.
Feel free to use this instrument in your research on narrative absorption. When you do, please refer to:
Kuijpers, M. M., Hakemulder, F., Tan, E. S., & Doicaru, M. M. (2014). Exploring absorbing reading experiences. Developing and validatin a self-rep...