Market expectations have increased that Yellen might indicate a clearer timeframe for the next US rate hike
MSCI's broadest index of Asia-Pacific shares outside Japan eased 0.3 per cent in early trade and Nikkei rose 0.4%
MSCI's broadest index of Asia-Pacific shares outside Japan eased 0.1 per cent in early trades
MSCI's index of Asia-Pacific shares outside Japan was down 0.1% but still headed for a 0.4% gain, South Korea's Kospi lost 0.4% and Australian shares dropped 0.2%
With global economy slowing and many countries facing deflationary pressures, investors' focus remained squarely on policy decisions from the world's major central banks