Discuss the differences between the formation of attitudes via the affective and the cognitive route.

Discuss the differences between the formation of attitudes via the affective and the cognitive route.
Do attitudes have the same effect on the actual behaviour in the context of a planned behaviour and an impulse purchase?
What is the role of involvement in this process and how might marketers influence actual behaviour in practice?
Use well researched and contextually relevant real world examples/scenarios to carefully illustrate your thoughts throughout your answer