When the price of petrol rises, some consumers begin riding their bikes more frequently or taking public transport instead of driving their cars. The fact that the Consumer Price Index (CPI) does not fully account for such changes in consumer behaviour is called: 0 a. substitution bias. 0 b. outlet bias 0 c. increase in quality bias. 0 d. diacrimination bias. A stock market crash which causes share prices to fall should cause: O a. a decrease in consumption spending. 0 b. an increase in wealth. O c. no change in consumption spending. 0 d. an increase in consumption spending. How do changes in income tax policies affect aggregate demand? 0 a. Higher taxes reduce disposable income. consumption and aggregate demand. 0 b. Higher taxes increase disposable income. consumption and aggregate demand. 0 0. Higher taxes increase aggregate supply and thus increase aggregate demand as well. 0 d. Higher taxes increase corporate investment and aggregate demand