Assume that an individual engages in behaviors that are in conflict with their stated religious beliefs, and they experience dissonance. What impact might this have on their beliefs? What might allow people to productively resolve that dissonance?

Answer 1

Several things need to be considered.

How strongly do they hold these values? Are their "stated religious beliefs" internalized? In other words, are they their own values or are they just repeating what they have been taught?

Do they believe that one taboo behavior negates the whole belief system? Or can they accept some violations (e.g., dietary laws) without rejecting the belief system entirely.

Do they believe the behavioral norms to be the infallible, literal "word of God" or imperfect human interpretations of God's words passed on through the centuries?

I don't know if I have helped you or just "muddied the waters" more. However, these questions need to be answered before resolving your questions.