Limitations
SECONDARY
Although both countries share similarities in culture, there are  some differences that we consider relevant to have a better control for future research. First, there were more women than men participants, with 58 females and 19 males for the Spanish sample and 51 females and 16 males for the Mexican sample. Having a more balanced sample between males and females could improve the clarity of the results shown. Second, the education level was lower in the Mexican sample than the Spanish sample; this is due to cultural and historical differences between both countries as most older people in Mexico tend to have only elementary or secondary education level. Third, not all the instruments used in this study have been validated for Mexico, here we come across the methodological and cross-cultural challenges of psychology today since most of the instruments used in psychological evaluation have been created and validated within Anglo-Saxon western societies and may show a cultural bias when used in other populations. Fourth, regarding the duration of the REMPOS intervention, we still do not know if more sessions could mean a more positive outcome or not. Doing more research of the time of sessions, frequency, and total duration could help improve the efficiency of the REMPOS program.