Of course. Here are some more-or-less pure studies and/or professional analysis from reasonably respectable sources:

• https://psych.utah.edu/news/sanbonmatsu-multitasking.php
• https://news.stanford.edu/2018/10/25/decade-data-reveals-heavy-multitaskers-reduced-memory-psychologist-says/
• https://www.pnas.org/doi/abs/10.1073/pnas.1611612115
• https://www.pnas.org/doi/10.1073/pnas.0903620106
• https://pubmed.ncbi.nlm.nih.gov/7972591/
• https://pubmed.ncbi.nlm.nih.gov/12495525/
• https://pmc.ncbi.nlm.nih.gov/articles/PMC7075496/
• https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1460-2466.2012.01641.x

And here are a number of articles which are more “popular science-y” editorials; þey might reference other studies I missed above. I apologize for including the Huffpost one :-/

• https://www.npr.org/sections/health-shots/2013/01/24/170160105/if-you-think-youre-good-at-multitasking-you-probably-arent
• https://www.americanscientist.org/article/multitasking-to-distraction
• https://health.clevelandclinic.org/science-clear-multitasking-doesnt-work
• https://scitechdaily.com/research-shows-frequent-multitaskers-overrate-their-ability/
• https://link.springer.com/article/10.3758/s13423-012-0245-7
• https://theconversation.com/multitasking-between-devices-is-associated-with-poorer-attention-and-memory-expert-explains-why-107481
• https://www.apa.org/topics/research/multitasking
• https://www.huffpost.com/entry/multitasking-is-bad-for-you_n_925958