The short version
This research is the culmination of a 5 year project between the IPA and Agency People. It was founded on the hypothesis that "the most successful individuals working in adland are both linear AND lateral thinkers - they are diagonal thinkers".
The research carried out so far is proving the hypothesis correct, and now you can test yourself and see if you are destined to be an advertising great. www.diagonalthinking.co.uk.
The longer version
More details of the research and how it has been conducted is on the website - very interesting over 100 agencies have been involved.
p.s. The Times has picked up on the research and is encouraging people to self test, which is exactly what new grads are doing. They are self testing and taking the results with them to interviews to prove how great they will be in coming years.
Have a go.