It's on page 44 of Multitasking in the digital age by Gloria Mark. https://archive.org/details/multitaskingatte0000glor/page/44/mode/2up?q=%2223+min%22 https:/

It's on page 44 of Multitasking in the digital age by Gloria Mark. https://archive.org/details/multitaskingatte0000glor/page/44/mode/2up?q=%2223+min%22 https://archive.org/details/multitaskingatte0000glor/page/44...