Got referred by my former manager. The process includes HR Interview + Test (Q'naire checking + Problem solving + Charting) + Line manager - Hr is the most arrogant people I've known with little respect for their candidates, especially someone's older than them. The whole experience actually levelled down my wants to work for Nielsen. - The testing is not difficult. However, as I don't want to work for them anymore since the HR, which supposed to be supportive and take a good care of the people, are terrible, I chose to finish my test with minimum effort to not waste my time with them.