Dividend investing is a powerful way to build wealth and financial security.If you're interested in adding more dividend-paying stocks to your portfolio, that's a fine idea. For one thing, dividend payers tend to be more established and reliable growers, since they have reached a point where management is confident it can commit to a regular payout to shareholders. Better still, dividend-paying stocks tend to outperform non-payers!For example, a study by Hartford Funds and Ned Davis Research found that from ...