Yes, these aren't conclusive, but I think they're the beginning of the truth. Do you agree that laziness and procrastination is genetic?
It's true for me. Both of my biological parents were ESFPs who procrastinated to the point of getting warrants for arrest due to not attending jury duty, hot water with the IRS, refusing to clean the house until it got infested with raccoons (I'm not even kidding - and actually, not even then), etc etc.
But I was raised by a natural, effortless workaholic ENTJ who expected the same from me - but the effortless part never rubbed off on me. When he was my age, he was only too happy to study non-stop. It was always a dreadful duty for me.
I get shit done now, because I've got goals, but I do have to make a conscious effort to NOT procrastinate, unlike xxTJs who never have that problem, because working is actually easy and enjoyable for them.
If you're a lazy procrastinator, do you find it's genetic? Are yoursiblings similar?
P.S. If you actually have to will yourself to NOT procrastinate, I group you with the actual lazy procrastinators, because your natural instinctive desire is to laze around. THe opposite group is the people who are NATURALLY prompt workaholics, effortlessly.