Nearly all of the studies investigating reactivity in concurrent thinking-aloud protocols are set in the context of problem solving, writing or reading, which only emphasizes that research on reactivity of CTA protocols in usability testing is highly desirable

I'm going to encourage you a little, to help you get started. :)

I am going to encourage you a little, to help you get started :)
Since you looked us up and read the site enthousiastically, I would like to offer you a big discount.