Journal
PSYCHONOMIC BULLETIN & REVIEW
Volume 28, Issue 6, Pages 2075-2084Publisher
SPRINGER
DOI: 10.3758/s13423-021-01967-0
Keywords
Multitasking; Metacognition; Self-evaluation; Task-performance; Triple-task
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The study found that multitasking decreased participants' awareness of their performance, independent of the multitasking cost on task performance. This has important implications for both metacognition and multitasking research.
Multitasking situations, such as using one's phone while driving, are increasingly common in everyday life. Experimental psychology has long documented the costs of multitasking on task performance; however, little is known of the effects it has on the metacognitive processes that monitor such performance. The present study is a step toward filling this void by combining psychophysical procedures with complex multitasking. We devised a multimodal paradigm in which participants performed a sensorimotor tracking task, a visual discrimination task, and an auditory 2-back working memory task, either separately or concurrently, while also evaluating their task performance every similar to 15 s. Our main finding is that multitasking decreased participants' awareness of their performance (metacognitive sensitivity) for all three tasks. Importantly, this result was independent of the multitasking cost on task performance, and could not be attributed to confidence leak, psychological refractory period, or recency effects on self-evaluations. We discuss the implications of this finding for both metacognition and multitasking research.
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