图 Begin by setting up the field you're writing about in a succinct summary. This first sentence (or sentences)holds a lot of weight as it sets up the focus for the article to follow. Your lead-in should be brief and clear enough for the reader to understand what the article will pertain to. Over the past 20 years,psychologists have cataloged a long list of differences between East and West.Begin by setting up the field you're writing about in a succinct summary. This first sentence (or sentences) holds a lot of weight as it sets up the focus for the article to follow. Your lead-in should be brief and clear enough for the reader to understand what the article will pertain to. Over the past 20 years, psychologists have cataloged a long list of differences between East and West