Fiction Writing: Craft Issue and Solution: Killer and Kid Problem

In my short novel, Killer and the Kid, my dialogue is unrealistic in multiple manners. Although the goal was to represent the astounding genius of the kids, they came off as unauthentic, in that all their conversation was intellectual and they did not jabber in kid talk as often as was necessary to make the kids genuine. Furthermore, the dialogue does not flow as well as it could and the characters speak in excessively long sentences, as if giving soliloquies.

Answer:
        To better portray the actors of my book speaking, I can break up the long winding passages with the characters performing actions while they are talking, so they don’t appear as if chatting while in a void. I can also use multiple forms of dialogue: summary, indirect, direct, and intermixed. I can also try to put more plot into dialogue and less exposition. I can also make sure to put tension within the conversations and natural pauses or moments of silence.