Does our ability to judge our own performance decline as we age?
While older adults can perform visual tasks just as accurately as younger adults, their ability to judge the accuracy of their own decisions decreases over time.
Source
Effects of age on metacognitive efficiency
What they did
The study evaluated how aging affects self-awareness of decision accuracy in 60 participants aged 18 to 84. Participants performed a visual perception task where they identified which of several brief intervals contained a target Gabor patch, with a staircase adjustment keeping visual accuracy near 70%. A subset of 38 participants also completed a word recognition memory task, and 44 completed a trail-making test to evaluate executive functioning.
What they found
The researchers found that visual metacognitive efficiency significantly declined with age, meaning older participants were less aware of when they made visual errors. In contrast, memory-based metacognitive efficiency did not show a statistically significant relationship with age. Additionally, the age-related decline in visual self-awareness remained significant even when controlling for executive functioning scores.
The limits
What it doesn't show
Because this was a cross-sectional study, it cannot prove that aging directly causes a decline in metacognitive efficiency over time within the same individuals. Additionally, some older participants had to state their confidence ratings verbally rather than using a keyboard, which introduces a potential confound in how responses were collected. Finally, the study failed to find a statistically significant difference between age's correlation with visual awareness versus memory awareness, meaning it does not prove the decline is entirely domain-specific.
Key terms
- Metacognition
- The ability to monitor and control one's own cognitive processes, often described as thinking about thinking.
- Metacognitive efficiency
- A relative measure of how well an individual's confidence ratings discriminate between their correct and incorrect decisions, independent of their actual task performance.
- Meta-d'/d'
- A signal detection theory metric that quantifies metacognitive sensitivity relative to primary task performance capacity.
- Staircase procedure
- An adaptive experimental method that automatically adjusts task difficulty based on a participant's ongoing performance to maintain a stable rate of correct responses.
- Executive function
- A set of cognitive processes—including working memory, flexible thinking, and self-control—that enable people to plan, focus attention, and manage tasks.
- Gabor patches
- Visual stimuli consisting of sinusoidal grating patterns of dark and light bars within a Gaussian window, commonly used in vision research.
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Quiz yourself
What metric did the study utilize to measure metacognitive efficiency independently of primary task performance?
Common questions
Why did the researchers use a staircase procedure for the visual task?
The staircase procedure adjusted the contrast of the visual targets based on previous answers to keep every participant's accuracy around 70%. This controlled for age-related differences in vision, ensuring that any differences in self-evaluation were not simply due to older adults finding the visual task harder.
Did general intelligence or education explain the decline in self-awareness?
No, the study found no significant relationship between either general intelligence (IQ) or years of education and metacognitive efficiency in either the visual or memory tasks.
Did memory performance decline with age?
Yes, older adults performed worse on the memory task itself, showing a negative correlation between age and memory performance. However, their memory metacognitive efficiency (their ability to judge when they were right or wrong about a memory) did not show a statistically significant decline with age.
Can we conclude that aging only affects visual self-awareness and not memory self-awareness?
No. While only the visual task showed a significant decline with age, the statistical comparison between the age-metacognition correlations in both domains was not significant, and fewer participants completed the memory task, which reduced the statistical power to find an effect.
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