Chapter One: Jonas is concerned about the assignment his friend, Asher, will receive at the Ceremony of Twelve. Based on this information, he seems genuinely concerned for his friend and so we could say he seems like an empathetic and caring friend.
Chapter Four: Jonas spends time volunteering at the House of the Old. He helps an old woman bathe and he is grateful that she trusts him. Here we see that he is a very respectful and responsible person. We also begin to see that he likes freedom of choice, even though he does not refer to it as that. He likes being able to choose where he volunteers his time. This is an indication of what is to come—he will be someone who is an independent thinker.
Chapter Five: Jonas begins to experience the "stirrings" and must start taking pills to suppress them. He is both happy he has grown up enough to reach that phase and at the same time he realizes how happy the dream made him feel. This is one of many instances in the chapter where Jonas trusts in the rules set up by the community. He is obedient to what he feels is the right thing. This will be a characteristic that he remains true to throughout the story, even as his view of what is "Right" changes.