It got me thinking and looking for the original paper after reading the paper there are some concerns with making the claims they have as being from the use of executive coaching.
There are a number of factors which have not been taken into account such as a control group who did not receive coaching and a second control group which received encouragement and praise and possibly a 3rd group that received some form of clear metric around the skill without any coaching or feedback.
It leaves us in a rather difficult situation where reports like this could heavily influence our choices as L+D/HR professionals to implement interventions. After all what business is not looking for an 88% increase in productivity.
We really do need to take care in understanding the outputs of these reports and also the limitations of their guidance or interpretation into our own businesses.