It is understandable why these kids fear failure considering the set up of most classrooms today and kids' desire to be socially competent and accepted. Many teachers do not create a classroom culture that applauds effort over success, and therefore kids feel pressure to "do things right" in order to avoid looking incompetent in front of their peers.
While reading the article and reflecting on instructional practices in teaching mathematics, I have found that number talks are an extremely effective way to foster conceptual understanding and to create an emotionally supportive environment. It is also a great way to hold students accountable for their thinking.
According to Turner and Meyer, "Instructional practices associated with establishing a learning orientation appeared to create fertile conditions for teaching and learning challenging mathematics." Number talks foster this approach by focusing on effort, growing as a community of learners, allowing for the students to be autonomous in their thinking, and placing less emphasis on having the correct answer.