About the complexity of the study of complex realities

References

1. Allen, S.
   (2017) Comparison as a fruitful way forward: bilinguals, co-activation, and interfaces. Linguistic Approaches to Bilingualism, (), –.
   [Google Scholar]
2. Birdsong, D.
   (2018) Plasticity, variability and age in second language acquisition and bilingualism. Frontiers in Psychology, , . 10.3389/fpsyg.2018.00081
   https://doi.org/10.3389/fpsyg.2018.00081 [Google Scholar]
3. Casado, A., Walther, J., Wolna, A., Szewczyk, J., Sorace, A., & Wodniecka, Z.
   (2025) Investigation of long- and short-term adaptations of the bilingual language system to different language environments: Evidence from the ERPs. Journal of Neurolinguistics, , Article 101242. 10.1016/j.jneuroling.2024.101242
   https://doi.org/10.1016/j.jneuroling.2024.101242 [Google Scholar]
4. DeLuca, V., Rothman, J., Bialystok, E., & Pliatsikas, C.
   (2019) Redefining bilingualism as a spectrum of experiences that differentially affects brain structure and function. PNAS, (), –. 10.1073/pnas.1811513116
   https://doi.org/10.1073/pnas.1811513116 [Google Scholar]
5. Flores, C.
   (2020) Attrition and reactivation of a childhood language. The case of returnee heritage speakers. Language Learning, , –. 10.1111/lang.12350
   https://doi.org/10.1111/lang.12350 [Google Scholar]
6. Flores, C., & Snape, N.
   (2025) What returnee bilinguals may teach us about language attrition, language stabilization, and individual variation. Linguistic Approaches to Bilingualism, published online09 Sept 2025. 10.1075/lab.25021.flo
   https://doi.org/10.1075/lab.25021.flo [Google Scholar]
7. Grosjean, F.
   (2015) Bicultural bilinguals. International Journal of Bilingualism, (), –. 10.1177/1367006914526297
   https://doi.org/10.1177/1367006914526297 [Google Scholar]
8. Gürel, A.
   (2007) (Psycho)linguistic determinants of L1 attrition. InKöpke, B., Schmid, M. S., Keijzer, M., & Dostert, S. (éds.) (2007) Language attrition: Theoretical perspectives (pp.–). John Benjamins. 10.1075/sibil.33.08gur
   https://doi.org/10.1075/sibil.33.08gur [Google Scholar]
9. Kubota, M., Goto, Y., Kurokawa, S., Matsuoka, Y., Otani, M., & Rothman, J.
   (2025) Different variables hold varying significance from childhood to adolescence: Exploring individual differences in grammar development of Japanese heritage speakers. Studies in Second Language Acquisition, (), –. 10.1017/S0272263124000615
   https://doi.org/10.1017/S0272263124000615 [Google Scholar]