H/t: Ace of Spades HQ
…there is a (likely apocryphal) story that tells the tale of an encounter between famous novelist Ernest Hemingway and famous photographer Ansel Adams. In the story, Hemingway is purported to have praised Adams’ photographs, saying, “You take the most amazing pictures. What kind of camera do you use?”
Adams frowned and then replied, “You write the most amazing stories. What kind of typewriter do you use?”
— that surge of self-confidence one gets when one acquires some small amount of skill in a thing and, emboldened by that skill, decides that they are awesome at that thing
…in addition to slowing you [mentally] down, multitasking lowers your IQ. A study at the University of London found that participants who multitasked during cognitive tasks experienced IQ score declines that were similar to what they’d expect if they had smoked marijuana or stayed up all night. IQ drops of 15 points for multitasking men lowered their scores to the average range of an 8-year-old child.
That strikes me as correct. But I view this with a healthy dose of skepticism:
Researchers at the University of Sussex in the UK compared the amount of time people spend on multiple devices (such as texting while watching TV) to MRI scans of their brains. They found that high multitaskers had less brain density in the anterior cingulate cortex, a region responsible for empathy as well as cognitive and emotional control.