Here's the kids' test for 7-12yos:
http://www.personalitypage.com/cgi-local/build_pqk.cgiIt only gives 3 of the 4 letters, because apparently the 4th isn't fully formed by age 12.
And I don't have any idea which personalities would be more amenable to homeschooling. That's sort of my problem with anyone--expert I respect or no--telling someone not to homeschool based on personality. Because there are so many very different ways to homeschool and so many helpful groups and supplies out there to support a homeschooling family (not to mention babysitting and classes and tutors!), it's hard for me to imagine anyone who couldn't make homeschooling work for the family.
My own opinion is that Introverts tend to have a harder time, since we need more time alone to recharge our batteries. Often people think introverts would have an easier time of it and extroverts would hate it, but HSing requires a lot of time with your kids and other people, so I don't think that's true.
That's another concern I have about telling people "you shouldn't homeschool": often the assumptions made about what homeschooling looks like and how it's done are just flat wrong.
So am I the perfect personality to homeschool? I seriously doubt it! I've had to use some supports, like babysitters. And my housework has suffered a lot (!!!) because something had to give. But compared to our other school options, this is definitely a successful choice for us! We had an adjustment period at the beginning, and I've had to learn to do a better job of "putting the oxygen mask on myself first, before helping others," as it were, so that I don't lose my cool. But you figure all that stuff out, and then it works. It just works!
So I guess what I'm saying is that I suspect I'm not someone Dr. Ruf would say has a good personality for HSing, but we're doing it, and we all greatly (!!!) prefer it over DS7's previous school situation. He's learning more, he's happier, he has more friends and time to be with his friends, and he's a lot nicer to be around. And I'm pretty happy, too...much happier than I was when I was worried all the time about his school situation and dealing with my miserable child's behavior problems.
Provided you remember that there's no one right way for homeschooling to look, you use the supports and helps that you need, and you take care of yourself just as surely as you take care of your kids, I really think ANY personality can homeschool and be happy.
FWIW...