Explaining age-related decline in theory of mind: Evidence for intact competence but compromised executive function

• Published in: PloS one Vol. 14; no. 9; p. e0222890
• Main Authors: Cho, Isu, Cohen, Adam S
• Format: Journal Article
• Language: English
• Published: United States Public Library of Science 20.09.2019; Public Library of Science (PLoS)
• Subjects: Adolescent; Adults; Age; Age Factors; Aged; Aged, 80 and over; Aging - physiology; Aging - psychology; Analysis; Biology and Life Sciences; Cognition; Cognition Disorders - diagnosis; Cognition Disorders - physiopathology; Cognition Disorders - psychology; Elderly; Executive function; Executive function (Psychology); Executive Function - physiology; Female; Geriatrics; Humans; Hypotheses; Male; Medicine and Health Sciences; Mental Competency - psychology; Middle Aged; Older people; People and Places; Physical Sciences; Psychological aspects; Research and Analysis Methods; Social Sciences; Studies; Theory of mind; Theory of Mind - physiology; Trends; Young Adult; Ontario Canada; Canada
• ISSN: 1932-6203; 1932-6203
• DOI: 10.1371/journal.pone.0222890

Previous studies suggest theory of mind (ToM) ability declines with age. However, prior tasks not only required ToM competence but also imposed high executive function (EF) demands, so decline in ToM ability could be caused by deterioration in ToM competence, EF, or both. It was predicted that if the elderly have intact ToM competence but compromised EF, then they should perform similarly to younger adults when using ToM tasks that lower executive demands, such as spontaneous-response tasks. Results showed that on tasks with reduced demands, older adults tracked belief to the same extent as younger adults, despite their declining EF. The findings support a model in which age-related decline in ToM ability is primarily caused by compromised EF, not ToM competence, suggesting that underlying ToM mechanisms are still intact in the elderly. We discuss implications of this work for competence-performance issues in ToM processing and the underlying sources of age-related deterioration of ToM.