evidence is consistent with the findings of the meta-analysis, where no moderation effect of education emerged in the relation between cognitive performance and everyday functioning when the sample was restricted to studies of cognitively healthy older adults. The findings of this thesis did not indicate a direct relationship between social participation, exercise, Internet use and education on cognitive performance. These findings could not support the third hypothesis. However, social participation, exercise, thesis’s Internet use and education moderated the relationship between age and cognitive performance and thus supported the fourth hypothesis. A visual examination of the relevant graphs indicates that those exercising more than the average had EF in younger age. In worse addition, the examination of the moderation effect of Internet use in the relation between age and EF indicates an overuse effect, namely that no or moderate use of Internet helps retaining performance in EF. Internet use most days of the week or more produced worse cognitive performance in EF in older age. In this study, 39% of seniors reported participating in volunteering sometimes or more frequently every year. Regarding childcare, the evidence showed that 55% of Greek seniors care for children once or more per week. In addition, 55% of those who provided care for children reported doing so most days, almost every day, or every day. Similarly, 21% of the participants reported providing care to disabled individuals. The percentage of Greek seniors that did not exercise at all was 60% in this study, with 14% exercising to the recommended levels. Many Greek seniors did not use the Internet (42%) in this study, with this trend being more evident among women. Lastly, the findings of this thesis indicate that the OTDL-G has a moderate, potentially satisfactory internal consistency, whereas the EPT-G reached excellent levels of internal consistency. Inter-rater reliability analysis did not yield any statistically significant difference
evidence is consistent with the findings of the meta-analysis, where no moderation effect of education emerged in the relation between cognitive performance and everyday functioning when the sample was restricted to studies of cognitively healthy older adults. The findings of this thesis did not indicate a direct relationship between social participation, exercise, Internet use and education on cognitive performance. These findings could not support the thesis’s third hypothesis. However, social participation, exercise, Internet use and education moderated the relationship between age and cognitive performance and thus supported the fourth hypothesis. A visual examination of the relevant graphs indicates that those exercising more than the average had worse EF in younger age. In addition, the examination of the moderation effect of Internet use in the relation between age and EF indicates an overuse effect, namely that no or moderate use of Internet helps retaining performance in EF. Internet use most days of the week or more produced worse cognitive performance in EF in older age. In this study, 39% of seniors reported participating in volunteering sometimes or more frequently every year. Regarding childcare, the evidence showed that 55% of Greek seniors care for children once or more per week. In addition, 55% of those who provided care for children reported doing so most days, almost every day, or every day. Similarly, 21% of the participants reported providing care to disabled individuals. The percentage of Greek seniors that did not exercise at all was 60% in this study, with 14% exercising to the recommended levels. Many Greek seniors did not use the Internet (42%) in this study, with this trend being more evident among women. Lastly, the findings of this thesis indicate that the OTDL-G has a moderate, potentially satisfactory internal consistency, whereas the EPT-G reached excellent levels of internal consistency. Inter-rater reliability analysis did not yield any statistically significant difference
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