Metacognitive domains are not aligned along a dimension of internal-external information source

Abstract

It is still debated whether metacognition, or the ability to monitor our own mental states, relies on mechanisms that are ‘domain-general’ (a single mechanism can account for the monitoring of any mental process) or ‘domain-specific’ (metacognition is accomplished by a collection of multiple monitoring modules, one for each cognitive domain). It has been speculated that two broad categories of metacognitive mechanisms may exist: those that monitor primarily externally-generated vs. those that monitor primarily internally-generated information.To test this proposed division, we measured metacognitive performance (using m-ratio, a signal detection theoretical measure) in four tasks that could be ranked along an internal-external axis of the source of information, namely memory, motor, visuomotor and visual tasks. We found correlations between m-ratios in visuomotor and motor tasks only; but no correlations between m-ratios in visual and visuomotor tasks, or between motor and memory tasks.While we found no correlation in metacognitive ability between visual and memory tasks, and a positive correlation between visuomotor and motor tasks, we found no evidence for a correlation between motor and memory tasks. This pattern of correlations does not support the grouping of domains based on whether the source of information is primarily internal or external. We suggest that other groupings could be more reflective of the nature of metacognition and discuss the need to consider other non-domain task-features when using correlations as a way to test the underlying shared mechanisms between domains.

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