The Cognitive Dissonance theory best accounts for his attitudinal shift.
What is Cognitive Dissonance?
In the field of psychology, cognitive dissonance is the perception of contradictory information. Relevant items of information include a person's actions, feelings, ideas, beliefs, values, and things in the environment.
Another common example of cognitive dissonance is the rationalization that takes place when people dieting “cheat.” How many times have you committed to healthy eating when a doughnut, muffin, or another delicious-looking food item threatened to take you off course? Maybe you thought, “Eh, it's only one doughnut.
Signs you might be experiencing cognitive dissonance include:
- General discomfort without a distinct or obvious cause.
- Feeling conflicted regarding a contentious issue.
- People accusing you of hypocrisy.
- Being conscious of opposing opinions and/or wanted, yet unsure about how to handle them.
Learn more about cognitive dissonance here:
brainly.com/question/11732168
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Its been a while since I did this topic, but I believe it was mostly because under communism there was little work for intellectuals, so they were often the ones who left the country. This resulted in a 'brain drain', a lack of knowledgable people. I seem to remember reading about the entire maths department of a university just up and leaving at one point. You could also argue that it was damaging for the image of communism if so many people were trying to leave.
I think it's five distinct paths. I could be wrong but it's an educated guess.

Indian Standards Institute.
