I have done any research about the relation between body image and critical thinking but i couldn't find any literature or research about it. Could you tell me some people who work on critical thinking?
I invite you to see studies by Ennis, Facione, Lipham, Peck and others. I have some articles on researchgate that you can access and then review the reference sections as well. An interesting topic-but what is theoretical foundation for looking for associations between body type and CTS. Did you use a published CTS instrument?
critical thinking in general or critical thinking about body image? There's some interesting work with a critical stance about weight-related approaches to health (see Bacon and Aphramor), you might want to review some of the fat studies literature too.