I didn't know about body doubling so in the mean time let me ask you some things:
- do you consider the friendly competition aspect (seeing someone do a task revives inspiration, desire, confidence, motivation to do it, when the other is tired you feel happy to fill the role)
- the emotional bond from sharing: sharing any task is often a strong bond (even just carrying a load), pain and success
- the intellectual benefits: a bit like the first point but searching for solutions gets much much cheaper with a peer. You can validate point of view / theories, feel less emotional pain from doubts it the other doesn't know too
In my opinion, they all fall under the category of a body doubling effect. Your second and third points strike a particular chord for me as well. I wrote a bit about why my cofounder and I are creating Double rather than doing it alone. In essence, we are cofounding because seeing the other person also trying their best and going through the rough parts with me drives me to keep going. (It's a quick read here: https://doubleapp.xyz/blog/dont-sleep-in-the-mud ).
Absolutely - one of the most common forms of body doubling that a lot of people have experienced has been studying with others. An emerging trend has also been, as others in the thread have linked, "study with me" videos.
I also find pair work to be very special on many levels (intellectually, emotionally,. logistically). I wish there was more theory on this