Jason does some things well (including restating a message in his own words, to check he has understood something correctly, keeping his eyes engaged on the page when he is reading, and asking appropriate clarifying questions that communicate interest and gained insights) and does other things not so well (such as not maintaining eye contact during conversations, interrupting others, multi-tasking, and focusing on his internal monologue).
The following are some examples that you might recommend to Jason to improve his listening and reading habits.
For more active listening,
maintain eye contact with the speaker when you're having a conversation
wait until the other person has finished speaking before answering
For more active reading,
focus on just one task at a time
focus your attention on the message, not your internal monologue.