Limitations and future research directions
color blindness, MCI
COLOR BLINDNESS
Several limitations of this study need to be mentioned. The sample population in this study may not fully represent the overall characteristics of older adults with MCI due to the exclusion of those with color blindness and education levels below the primary school. Future studies will be critical to confirm the applicability of these benefits to diverse populations. Besides, we employed a wait-list control group instead of an active control group, as a previous study showed that the effect size might be similar between active control and passive control [