Suitable words to fill the blanks

Hello, everyone,

Chapter 3, ‘The Rule of Dissonance -- Internal Pressure Is the Secret’

‘Getting Your Foot in the Door’

. . . In a study, a researcher pretending to be a volunteer surveyed a California neighborhood, asking residents if they would allow a large sign reading ‘‘Drive Carefully’’ to be displayed on their front lawns. To help them understand what it would look like, the volunteer showed his participants a picture of the large sign blocking the view of a beautiful house. Naturally, most people refused, but in one particular group, an incredible 76 percent actually approved. The reason that they agreed was this: two weeks earlier, these residents had been asked by another volunteer to make a small commitment to display a tiny sign that read ‘‘Be a Safe Driver’’ in their windows. Since it was such a small and simple request, nearly all of them agreed. The astonishing result was that the initial small commitment deeply influenced their willingness to accept the much larger request two weeks later.

*source; https://westsidetoastmasters.com/resources/laws_persuasion/chap3.html

Though the title of above paragraph is “A small commitment leads to a larger one.”, which words will be best in the blanks to summarize above paragraph? Or, I would appreciate, if you propose your opinion;

“If we engage in a behavior we had not expected that we would have, our ( A ) toward that behavior are likely to ( B )."

? thought - change, ? thought – persist

Would hope to hear your valuable ones.