Weber Shandwick's latest study revealed that 81% of CEOs among the world's top 50 companies engage socially, but chief executives in the Asia-Pacific region lag behind their counterparts.

The study also found that many were less active in 2012 than they were in 2010.

The research was conducted in mid-2012, studying the activities of CEOs from the top 50 companies listed in this year's Fortune global 500 rankings. Fifteen CEOs were US-based, 21 are European; 11 are in the Asia-Pacific ...