| 模型 | 模型答案 | 正确答案 |
|---|---|---|
| 金声玉亮2.0 | A. An increase in the marginal propensity to consume. Explanation: The tax multiplier is the change in aggregate demand resulting from a change in taxes. When the marginal propensity to consume (MPC) increases, it means that households are more likely to spend their disposable income, which leads to a larger increase in aggregate demand for a given tax cut. Therefore, an increase in MPC increases the size of the tax multiplier. The other options are incorrect: B. An increase in the reserve ratio would decrease the money supply and reduce the size of the tax multiplier. C. An increase in the marginal propensity to save (MPS) would reduce the size of the tax multiplier, as households would be less likely to spend their disposable income. D. A decrease in the spending multiplier would reduce the size of the tax multiplier, as a given change in government spending would have a smaller impact on aggregate demand. |
A |
| deepseekr1 | The tax multiplier is calculated as -MPC/(1-MPC), where MPC is the marginal propensity to consume. Its size (absolute value) depends on MPC: a higher MPC increases the numerator and decreases the denominator, thereby amplifying the multiplier. - **Option A**: An increase in MPC directly raises the tax multiplier, as shown by the formula. - **Option B**: A higher reserve ratio impacts monetary policy (money multiplier) but does not directly affect the tax multiplier. - **Option C**: A higher MPS (equivalent to a lower MPC) reduces the tax multiplier. - **Option D**: A decrease in the spending multiplier (caused by a lower MPC) also reduces the tax multiplier. Thus, only **A** increases the tax multiplier. Answer: A |
A |
| gpto1 | A | A |
| GPT-4o | A. An increase in the marginal propensity to consume. | A |
| llama3.1-70B-Instruct | A |
A |
| llama3.1-405B-Instruct | A. An increase in the marginal propensity to consume. The tax multiplier is the change in aggregate demand resulting from a change in taxes. When the marginal propensity to consume (MPC) increases, it means that individuals are more likely to spend their disposable income, which leads to a larger increase in aggregate demand for a given tax cut. Therefore, an increase in the MPC increases the size of the tax multiplier. The other options are incorrect: B. An increase in the reserve ratio would decrease the money multiplier, not the tax multiplier. C. An increase in the marginal propensity to save (MPS) would decrease the tax multiplier, as individuals would be less likely to spend their disposable income. D. A decrease in the spending multiplier would not directly affect the tax multiplier. The spending multiplier and tax multiplier are related but distinct concepts in macroeconomics. |
A |
| DeepSeek-Coder-V2 | A | A |
| Qwen2-72B-Instruct | A. An increase in the marginal propensity to consume. | A |
| baichuan4 | A | A |
| doubao | A The tax multiplier is negatively related to the marginal propensity to save and positively related to the marginal propensity to consume. An increase in the marginal propensity to consume leads to an increase in the tax multiplier. An increase in the reserve ratio and a decrease in the spending multiplier do not directly affect the size of the tax multiplier. An increase in the marginal propensity to save would decrease the tax multiplier. |
A |
| minimax | A. An increase in the marginal propensity to consume. | A |
| kimi | A. An increase in the marginal propensity to consume. The tax multiplier is a measure of how much the total change in aggregate demand is for a given change in taxes. It is influenced by the marginal propensity to consume (MPC), which is the proportion of additional income that is spent on goods and services. When the MPC increases, it means that a larger portion of any additional income is spent, rather than saved. This increased spending can lead to further rounds of spending and income generation, thus amplifying the effect of the initial change in taxes on aggregate demand. Therefore, an increase in the MPC increases the size of the tax multiplier. |
A |
| wenxinyiyan | A Explanation: The tax multiplier measures the change in aggregate demand (or GDP) that results from a change in taxes. The formula for the tax multiplier is: Tax Multiplier = -MPC / (1 - MPC), where MPC is the marginal propensity to consume. A. An increase in the marginal propensity to consume (MPC) would increase the numerator of the tax multiplier formula and make the denominator smaller (since 1 - MPC would be a smaller number). Both these effects would lead to a larger tax multiplier. B. The reserve ratio is not directly related to the tax multiplier. It affects the money multiplier, which is a different concept. C. An increase in the marginal propensity to save would decrease the marginal propensity to consume (since MPC + MPS = 1). This would decrease the numerator of the tax multiplier formula and make the denominator larger, leading to a smaller tax multiplier. D. The spending multiplier and the tax multiplier are related but distinct concepts. A decrease in the spending multiplier would not directly increase the size of the tax multiplier. In fact, since the spending multiplier is also based on the marginal propensity to consume, a decrease in the spending multiplier would likely be caused by a decrease in the marginal propensity to consume, which would decrease the tax multiplier. |
A |
| zhipu | A. An increase in the marginal propensity to consume. Explanation: The tax multiplier is influenced by the marginal propensity to consume (MPC). An increase in the MPC means that people will spend a larger portion of any additional income they receive, which amplifies the effects of tax changes on aggregate demand. Therefore, an increase in the MPC increases the size of the tax multiplier. The other options either decrease the multiplier or are not directly related to its size. |
A |
| gpto1 | A | A |