ObjectivesThis study aimed to investigate decision-making competence of midlife and older adults, and its relationship with cognitive reserve and cognitive functions.MethodsA total of 120 healthy adults (aged 50 to 90 years) completed a decision-making task and various neurocognitive tests. In the decision-making task, participants encountered everyday scenarios with two options, including relevant and irrelevant numerical information, formatted as frequencies or percentages. In congruent trials