Idk about scientifically, but I’ve had spiders at my place that seemed like they had different personalities. For example, one was smaller but liked to move around and build lots of webs. He’d disappear and turn up in another corner of the room. Kinda spazzy. I called him Napoleon. Meanwhile there was another spider (same species) in the room that was super chill, hanging out on the same web for months. I called him The Dude lol