Though you could be more specific on how you will approach motivation and anxiety (e.g., EFL skill, context), you might go through the following reference items for insights.
Alamer, A., & Lee, J. (2019). A motivational process model explaining L2 Saudi students’ achievement of English. System, 87, 102133. https://doi.org/10.1016/j.system.2019.102133
Cheng, Y. (2017). Development and preliminary validation of four brief measures of L2 language-skill-specific anxiety. System, 68, 15–25. https://doi.org/10.1016/j.system.2017.06.009
Noels, K. A., Pelletier, L. G., Clément, R., & Vallerand, R. J. (2000). Why are you learning a second language? Motivational orientations and self-determination theory. Language Learning, 50(1), 57–85. https://doi.org/10.1111/0023-8333.00111
Wang, W., & Gan, Z. (2021). Development and validation of the reading motivation questionnaire in an English as a foreign language context. Psychology in the Schools, 58(6), 1151–1168. https://doi.org/10.1002/pits.22494
Yu, S., Zhou, N., Zheng, Y., Zhang, L., Cao, H., & Li, X. (2019). Evaluating student motivation and engagement in the Chinese EFL writing context. Studies in Educational Evaluation, 62, 129–141. https://doi.org/10.1016/j.stueduc.2019.06.002
Zhang, X., Dai, S., & Ardasheva, Y. (2020). Contributions of (De)motivation, engagement, and anxiety to English listening and speaking. Learning and Individual Differences, 79, 101856. https://doi.org/10.1016/j.lindif.2020.101856
Thanks for your kind help, by the way, I am going to study the Chinese learners' motivation towards learning English (types of motivation; are they instrumentally or integratively motivated) then correlate it with anxiety. Mohialdeen Alotumi
In that case, you could have a look at ELLMS validated by Ardasheva et al. (2012) and FLA scale validated by Horwitz (1986). Here are the full citations.
Ardasheva, Y., Tong, S. S., & Tretter, T. R. (2012). Validating the English language learner motivation scale (ELLMS): Pre-college to measure language learning motivational orientations among young ELLs. Learning and Individual Differences, 22(4), 473-483. https://doi.org/10.1016/j.lindif.2012.03.001
Horwitz, E. K. (1986). Preliminary evidence for the reliability and validity of a foreign language anxiety scale. TESOL Quarterly, 20(3), 559. https://doi.org/10.2307/3586302
Your question is very good. You can use one of the following very useful methods to motivate learners: 1. Give them expressions and words that indicate psychological comfort on their part towards you 2. Doing experimental exercises to generalize the language through things they like. 3. Inform them that they are on the right path to learning the language. 4. Giving them practical exercises to recite in front of their colleagues to learn and overcome shyness.
In my studies during MA English language teaching course I used questionnaires by Zoltan Dornyei. There were also questionnaires that were used to study motivation of Chinese learners which is your topic as I understood. I'm not sure if those are useful for your research, but I'll attach the link https://www.zoltandornyei.co.uk/motivation-questionnaires .
For anxiety:Botes, Elouise & van der Westhuizen, Lindie & Dewaele, Jean-Marc & MacIntyre, Peter & Greiff, Samuel. (2021). Validating the Short-Form Foreign Language Classroom Anxiety Scale (S-FLCAS). 10.31234/osf.io/x8mcg. pre-print
For motivation:Papi, M., Bondarenko, A., Mansouri, S., Feng, L., & Jiang, C. (2019). RETHINKING L2 MOTIVATION RESEARCH: THE 2 × 2 MODEL OF L2 SELF-GUIDES. Studies in Second Language Acquisition, 41(2), 337-361. doi:10.1017/S0272263118000153