It's very common for a defense attorney to use psychological techniques during trial to humanize their clients. In fact, any lawyer worth his salt would attempt to do it.
This specific technique is designed to make the jury feel like they are acquainted with the defendant. They may not be consciously aware of it, but that sense of acquaintance influences the jury's decision on guilt.
This is actually a defense tactic. By referring to him by his first name, he is attempting to humanize him to the jury.
It's very common for a defense attorney to use psychological techniques during trial to humanize their clients. In fact, any lawyer worth his salt would attempt to do it.
This specific technique is designed to make the jury feel like they are acquainted with the defendant. They may not be consciously aware of it, but that sense of acquaintance influences the jury's decision on guilt.