Matthew is a Structured person.  The Structured person is careful, thorough, precise and meticulous.  Matthew was a tax collector by occupation...he had to be good with details.  He was a Jew writing to the Jews about a Jew.  He started the history of Jesus with Abraham rather than with Adam.  His gospel is well organized by teaching.  It contains over sixty five references to the Old Testament, forty-three of these being direct verbal citations, used to prove the deity of Jesus thus greatly outnumbering those found in the other Gospels.

Mark is a Direct person.  The Direct person is candid and results oriented.  Mark skips over all the background and gets right to the point.  He reports a demon being cast out in the 25th verse of the first chapter.  Mark uses the Greek word "euthus" (immediately) more times the all the other gospel writers combined.  He wrote the shortest gospel ... the first one on the market.

Luke is a Paced person.  The Paced person is easy going, harmony oriented and persistent.  Luke was a good listener.  He was not an eye witness.  He had the ability to "hang in there"...the only one that could really work with Paul.  In 2 Timothy 4:11 Paul wrote that the only one with him at one point was Luke.  He was relationship oriented starting his gospel talking about Jesus' family history.  His gospel was written so smoothly that it later became the script for the movie "Jesus".
     
John is an Extroverted person.  The Extrovert is people oriented, they like people and want to be liked in return, they are talkative and outgoing. John went around calling himself the "beloved disciple"...Jesus loved them all the same or he would have been a "respecter of persons".  The Extrovert knows when someone cares about him.  John wanted people to be part of the team and became upset when he saw other people casting out demons.  Jesus told him if they are not against us they are for us.  At the end of his 2nd epistle he writes: "Having many things to write unto you, I would not write with paper and ink: but I trust to come unto you, and speak face to face, that our joy may be full." and again at the end of his 3rd epistle he writes: "But I trust I shall shortly see thee, and we shall speak face to face."  Extroverts would rather talk about it than write about it.