Which of the following is correct regarding intra-industry trade (IIT)?

Question

BlackTom AI · Accepted Answer

Vertical intra-industry trade occurs when countries simultaneously import and export products within the same industry but these products differ in quality, unit value, or stage of production; trade in parts and components typically fits this pattern, so it is classified as vertical IIT.

1. Relevant concepts
- Intra-industry trade (IIT): two-way trade in goods within the same industry between countries.  
- Horizontal IIT: trade in similar-quality goods targeted at different consumer preferences (unit values similar).  
- Vertical IIT: trade in goods that differ by quality, technological content, or position in the value chain (unit values differ).

2. Step-by-step reasoning
- Parts and components are intermediate goods used to assemble final products.  
- Countries often specialize in different stages of production (e.g., high-value assembly vs. low-value parts manufacturing).  
- When a country exports components and imports other components or final goods of different quality/value, the trade reflects differences in product quality or value-added—characteristic of vertical IIT.

3. Illustrative calculation/example
- A practical test uses unit value ratios (UVR = export unit value / import unit value).  
- If exports of a component have unit value $80 and imports of related components have unit value $120, UVR = 80/120 = 0.67 (<0.8), indicating vertical IIT.  
- Conversely, UVR close to 1 (e.g., 0.95–1.05) would indicate horizontal IIT.

4. Why the correct answer is correct
- Parts/components generally occupy different stages of the value chain and differ in unit value and quality across trading partners, matching the definition of vertical IIT.

5. Why common alternatives are incorrect
- Saying parts/components represent horizontal IIT is incorrect because horizontal implies similar quality and price.  
- Saying they are inter-industry trade is wrong because both exports and imports remain within the same industry (automotive parts vs automotive parts), not across different industries.

6. Conclusion
- Therefore, trade in parts and components is correctly classified as Vertical IIT, which matches the provided answer.

Which of the following is correct regarding intra-industry trade (IIT)?单项选择题

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