The aging process of the elder people is usually alongside with memory loss, lack of attention and other cognitive decline in performance. This study sets out to find the level of correlation between the elderly people's cognitive ability and the possible sources of decay which include: age, gender, education level, smoking or drinking habits, frequency of exercise, variability of heart rate, mental health and other factors. The cognitive intervention was simulated to measure the possible

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... of intervention on the cognitive ability of the elderly. The effectiveness of these cognitive interventions was evaluated during this study. The results showed that the cognitive ability of the elderly was positively related with gender, education years, smoking, drinking and level of mental health for the length of two weeks during the study. Negative correlations were found between the cognitive ability and factors including: age, exercise frequency, and high heart rate variability. Certain improvement over the efficacy of the interventive treatment was found among elderly people with mild cognitive impairment.