This extensive study by Microsoft Corp. found out that average human attention span has reduced from whopping(!) 12 seconds in 2012 to mere 8 seconds in 2015. The average attention span of a so-called ill-focused goldfish is nine seconds. The study found that people generally lose concentration after 8 seconds, as a result of our increasingly digitized lifestyle. So if your customers can’t see your complete webpage or do what they want to on your web or mobile app within 8 seconds, you lose them forever.