Woolever:  The Differences Between
Academic Writers and Non-academic Writers

Academic writers stress the interpretation of facts and urge readers to develop their own interpretations. Non-academic writers focus on presenting facts and explaining or calling for specific actions.
 
Academic writers pose readers as “co-conspirators” often filling them in on background details:  how facts were found and interpretations were realized. Non-academic writers envision readers as recpticles or decision makers interested only in essential facts and in knowing what they should do with those facts.
 
Academic writers assume readers will take time to read densely “packaged” material. Non-academic writers assume readers don't have time to read densely "packaged" material.
 
Academic writers most often use dense paragraphs with relatively long and complicated sentences. Non-academic writers most often use short paragraphs, and short sentences.  They also use readability enhancing typographic devices.
 
Academic writers often feature their personas. Non-academic writers efface their personas.
 

Woolever, Kristin R.  "Coming to terms with Different Standards of Excellence for Written Communication."  In Worlds of Writing:  Teaching and Learning in Discourse Communities.  New York:  Random House, 1989.  pp. 5-8.