2 published verifications about Productivity Productivity ×
“Multitasking reduces productivity.”
The claim is well-supported by robust scientific evidence. Research from the APA, NIH, Stanford, and peer-reviewed experimental studies consistently shows that what people call "multitasking" — rapidly switching between tasks — imposes measurable cognitive costs, increasing errors and reducing output by an estimated 20–40%. While a tiny fraction (~2.5%) of people may be immune to these effects, and simple compatible tasks may not suffer the same penalties, the claim accurately reflects the strong scientific consensus for the vast majority of real-world work contexts.
“Constantly striving to maintain Inbox Zero can reduce focus on important tasks.”
The claim is largely accurate. Multiple sources — including psychologist Dr. Emma Russell's research and productivity analyses — confirm that compulsively striving to keep an empty inbox can lead to distraction, burnout, and reduced focus on meaningful work. However, the claim omits important context: the original Inbox Zero method explicitly discourages constant checking and instead advocates batched, efficient email management designed to free up focus. The harm described is a well-documented misapplication of the method, not an inherent feature of it.