This links in well to what we are trying to do with these Scoop.it pages.
Basically it's saying that leadership is idiosyncratic. What works well for one person may not be appropriate for another.
You need a variety of approaches to help different people. The article advises using personality type tests like MBTI, it's worth noting that most of these have been proven to be inaccurate and even harmful although they do still have their uses.
We believe that Scoop.it is a great way to provide a drip feed of current ideas and thinking to spark ideas and debate, it's up to you how you choose to use them.