I've worked with traders in emerging markets and my strong impression is that each market is very different, generally speaking.
But not in the ways you might think. For instance, out in Asia you don't have silly games played by market makers as the exchanges are fully electronic. That said, liquidity is often an issue and there are inumerable ways that local players and offshore hedge funds can game a small market/stock ala Livermore back in the day. Some of the maneuvers can be fairly obvious. Also, insider trading, including companies self dealing in their own stock and stock of subsidiaries, competitors, customers and suppliers is also common.
As such, traders must specialize by country - work on a desk in country for a few years in order to learn the ropes.
Thus, answering your sweeping question is likely all but impossible. If you were to ask about a specific market it is also unlikely someone knowledgeable on that market would be here on ET.