You made a mistake. What to tell?

#1. We made a mistake, it`s our full responsibility, and we work hard to make things better.
or
#2. It`s not our fault.

A social psychologist, Fiona Lee, established a study to find out how the way a business presents its faults would affect the favorability of the business.

She studied hundreds of real reports focused on explaining why the company performed poorly over the previous year.

Lee found that the companies who had reports like the #1 example had higher stock prices the next year.