The concept of 'functional fixedness' refers to a cognitive bias that limits a person to using an object only in its traditional manner, preventing them from imagining alternative uses. This mental block often hinders problem-solving, as individuals fail to see novel solutions because they are fixated on an object's typical function. Researchers have demonstrated this bias in various experiments, showing that when people are given a familiar object, they struggle to use it in creative ways to achieve a goal.
🎧 การบรรยาย
Professor: Let me illustrate this with a classic experiment. Participants were given a box of thumbtacks, a candle, and a matchbook, and were asked to attach the candle to a wall so it could burn without dripping wax on the floor. Most people tried to melt the candle and stick it to the wall, or tack the candle directly to the wall—both failed. However, the solution was to empty the thumbtack box, tack it to the wall, and use it as a platform for the candle. Why didn't they see it? Because they fixed the box's function as a container for tacks. Once the box was empty, they still viewed it as 'the tack box,' not as a potential shelf. This demonstrates functional fixedness—the box's usual role blinded them to its alternative use.
❓ คำถาม Question: Using the example from the lecture, explain the concept of functional fixedness.
📊 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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