I recently shared an IB Learner Profile self-assessment form with you (here). One of our wonderful teachers and head of Grade 7, Jason Simons, gathered some feedback from some students. They said that the older students would just skip through this quickly, giving themselves 5 for every one. They said they would be more invested, if they only saw the description, and they did not know the attribute (though hopefully they would be able to figure it out!).
SO....we made a Google Form where the first page just had the description, and a space for them to assess themselves from one to five, then on the second page (which they can only access after they have finished the first page), had the descriptions (IB Learner Profile Poster), and a space for reflection.
Fill it in yourself - I'll send you your results.
If you already have a copy of the Google Form, you can easily make yourself this version. If you are really stuck, then comment with your email (make sure you put it in the 'comment' field, as I can't see the email box results), and I can make you a copy.