Does More Than One Monitor Improve Productivity?

Coding Horror: Does More Than One Monitor Improve Productivity?

A difficult one this one – I’ve never actually been able to work with 2 same sized monitors, but I have tried to use a laptop and an external monitor at the same time, and personally I found the ‘second’ monitor (the external one is bigger so that would be my primary monitor) to be a distraction – especially if I had a web browser or email application running on it.