How can a 18 month old be so stubborn?

A few months ago when it started getting warm outside I figured it would be nice for Austin to get a pair of sandles to wear. I couldn't get him to try them on at the store which should of been my first clue that this might be an uphill battle. But really---what kid would want to wear socks and tennis shoes all summer long...especially in the humid Oklahoma heat? So after a few attempts of trying to put the sandles on a kicking and screaming kid, I decided that this battle would not be won. How could I expect him to put on new shoes when he has learned that "go get your shoes" and "lets put on your shoes" means getting out the blue and white tennis shoes. So I returned the sandles and bought the same tennis shoes he has been wearing the last 6 months but in a bigger size. As you can see by the picture this story does have a happy ending. Austin loves to play with his cousins Connor and Klayton including watching and emulating them. Now Connor and Klayton wear sandles. So Andrea brought down a pair of sandles that her kids don't wear for Austin to try. So I pulled out the shoes and purposely said "look, do you want to wear Klayton's shoes"......"let's put on Klayton's shoes".......haha....it worked like a charm!!!