Can old dogs change?

Challenged leadership can be modified according to HBR:

Those who believe that leopards, particularly senior management leopards, can't change their spots may be surprised to find that 71 of those 96 leaders were able to improve those flaws enough show a statistically significant improvement in their overall leadership effectiveness on their subsequent 360 evaluations. That is, roughly 75% of these leaders were able to change their behavior enough that their colleagues, subordinates, direct reports, and bosses (who had judged them so harshly before) could readily see improvement.

Common areas of weakness in challenged leaders:


http://blogs.hbr.org/cs/2013/01/good_news_poor_leaders_can_cha.html