The aging population brings various problems to the table, one of which is the increase in the number of individuals suffering from dementia. Research indicates that the number of people living with dementia will triple by 2050, reaching 131 million patients (Prince et al., 2015). Studying and designing interventions aimed at preventing and coping with dementia is emerging as a priority, not only in Croatia, which according to the 2021 census has the highest proportion of older population, but also world-wide. In this research, we applied the A-BOX training, a set of stories and tasks intended for individuals with mild cognitive impairment and dementia, with the aim of assessing its efficacy in strengthening cognitive functioning in individuals suffering from various types of dementia. The training involved 31 participants from Homes for the Elderly and Disabled in Split and Zagreb, while 37 participants represented a control group and were not included in any treatment. The intervention lasted for 7 weeks; in the 1st week MoCA was administered to investigate participants’ cognitive status, followed by 5 weeks of cognitive training intervention (1 session per week), and the last week (posttest) MoCA was again applied. The results indicate the efficacy of the training; the treatment group showed a significant improvement in cognitive status after the intervention, while there was no change in the control group. Such findings suggest the benefits of including cognitive training in the treatment of individuals with dementia.