Whilst the previous two criteria in judging driver performance have been based on hard facts and figures, this is a more subjective area.
Grosjean came into the 2013 season with big question marks hanging over his mental strength after a series of high-profile accidents in 2012 led Mark Webber to label him a “first lap nutcase”.
But some mature drives throughout the year proved that Grosjean was now a different man and the Frenchman put it down to the help he received by working with a psychologist before the start of the season, as quoted on Sky Sports.
(It was) not an easy end of the season but I think I've learnt how to put everything together for this year. We know that there won't be any more chances so I'll have to deliver what the team want. It's not a secret that I started work with a psychologist in September last year and it went very well during the winter. I had a lot of discussion with Genii, the owner, to try to help them understand and take the right decision. And when they called me to say, 'Okay we go again for one more year' I was more than happy.
And two incidents towards the end of the season proved that Grosjean was much more of a team player than Raikkonen.
Having made a minor mistake to allow Raikkonen past him in Korea, Grosjean felt somewhat aggrieved that he was not allowed the position back despite apparently being the quicker man.
Grosjean had been compliant in Germany in letting Raikkonen past to pursue Sebastian Vettel but again he bit his lip and took the disappointment on the chin admirably.
The same could not be said of Raikkonen, who found it hard to accept letting Grosjean by in India despite struggling for grip on shot tyres.
The Finn’s stubbornness finally got to trackside operations director Alan Permane who told Raikkonen to “get the f**k out of the way!”
Raikkonen didn’t take kindly to being spoken to in that manner, responding "Don't shout, f*****. When I have a chance, but not in the middle of the fast corners."