In psychology, the term 'cognitive dissonance' refers to the mental discomfort experienced when a person holds two or more contradictory beliefs, values, or attitudes, or when their behavior conflicts with their beliefs. This discomfort often motivates individuals to reduce the inconsistency by changing their beliefs, adding new ones, or rationalizing their behavior. According to Festinger's theory, people strive for internal consistency, and when dissonance arises, they are driven to restore harmony, often through self-justification or altering their perceptions.
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Professor: Let me give you an example from a classic study. Students were asked to perform a very boring task—turning pegs on a board for an hour. Afterward, they were asked to tell the next participant that the task was fun and interesting. Half were paid one dollar, the other half were paid twenty dollars. Later, when asked how they really felt about the task, the one-dollar group said they actually enjoyed it, while the twenty-dollar group admitted it was dull. Why the difference? The one-dollar group had no strong external reason for lying, so they experienced cognitive dissonance—they told a lie but had little justification. To reduce the discomfort, they convinced themselves the task wasn't so bad. The twenty-dollar group had a clear external justification (the money), so they felt no dissonance and kept their true opinion.
❓ คำถาม Using the example from the lecture, explain the concept of cognitive dissonance and how it was demonstrated in the study.
📊 เกณฑ์การให้คะแนน TOEFL Speaking Task 3
Delivery: Fluency, pronunciation, intonation
Language Use: Grammar, vocabulary, sentence variety
Topic Development: Accurately explain the reading concept and restate the lecture examples
Scored 0-30 based on holistic scoring (original 0-4, scaled to 30). 30s preparation, 60s response.
💡 เคล็ดลับ
Note the core concept definition from the reading (usually 1-2 sentences)
Record 1-2 specific examples the professor uses in the lecture
Start with the concept definition, then explain with lecture examples
Use template phrases: "The reading defines... The professor illustrates this by..."
Keep within 60s; ensure clarity and fluency
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