Getting a scientific article published with no qualifications to any scientific journal?
There are two different types of "no qualifications":


A person may be "unqualified" because they don't have the usual pieces of paper
A person may be "unqualified" because they are not familiar with the standards and practices of the field.


Don't worry about the first one.  Worry about the second one.  For example, one of the other comments raised the issue of getting human subject experiments approved.  Likewise, there are lots of subtle challenges in experimental design that have to be dealt with in order to  getting a valid psychological result.  But high school students and undergraduates do real scientific work all the time.  Consider, for example, the iGEM genetic engineering competition: students from around the world, both high school and undergraduate, get right out to the bleeding edge of science, and some of their work goes on to be published.  Or consider the Hackerspace/DIY movement, which is bubbling over with innovation and certainly knows no age barriers.

Now, what most of those folks have, and what it sounds like you don't currently, is mentors who know the ropes.   A good mentor might or might not be "qualified" in the sense of pieces of paper, but should have a good sense of the scientific method, and at least some ideas of who else to get involved if you start thinking you've got a unique result and want to figure out how to get from awesome science on the internet to a formal publication.

Don't worry about the uniqueness or publication part of it too much.  First, find some good peers and a mentor if you can, and just start doing some science.  Then see if you actually enjoy the thrill of the knowledge chase enough to overcome the frustrations of experiments that don't work and people who point out the problems in the ideas you have come to love.  If you fall in love, not just with the idea of science, but with the process, then as time goes by you can sort out which of the many science-related career paths ends up being a good one for you to pursue. 

Maybe you'll end up published before you turn 20, and maybe you won't.  If that makes a big difference to you, then you're in it for the wrong reasons.