**5. Conclusions**

Our findings suggest that doll therapy improved the emotional state, diminished disturbing behaviors, and enhanced communication with the environment in dementia patients. However, randomized studies with a greater sample size and methodological rigor are needed, as well as follow-up protocols to reaffirm these results.

**Author Contributions:** Conceptualization, A.M.-G. and A.-I.C.-S.; methodology, A.M.-G. and A.-I.C.-S.; formal analysis J.-J.C.-Á. and V.F.-M.; resources, V.A.-P.; writing—original draft preparation, A.M.-G., A.-I.C.-S. and V.A.-P.; writing—review and editing, V.F.-M.; visualization, V.F.-M.; supervision, A.M.-G. and A.-I.C.-S., project administration, A.-I.C.-S. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research received no external funding.

**Institutional Review Board Statement:** The study was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). The systematic review protocol was registered in INPLASY with code: 1539.

**Conflicts of Interest:** The authors declare no conflict of interest.
