Seamus and Teaghan are good examples. I used compulsion, prong, shock, the whole nine yard with Seamus when he was young. Even though it's been years since I threw all that crap away, the learning blocks still remain. As the article states, he's a good dog in most senses of the word. However it's very hard to teach him new things cause he just sits there and looks at me. He's getting over it though.
Teaghan, on the other hand, I've taught using shaping and marker training. She loves to try new thngs! If I don't show a reaction, she trys something else until she gets a treat (or a thrown toy)