| Abstract: | Recent theory suggests uncertainty in income influences consumption expenditures. With disposable income modeled as a random walk plus drift, an econometric technique for estimating the moments of a dependent variable is used to test this hypothesis by producing a series of consistent estimates of the variance of disposable income. Using quarterly post-World War II data and a well-known specification of the consumption function, the standard deviation of income has a negative and statistically significant influence on consumption. The influence of the standard deviation of income on consumption is of the same order of magnitude as that of contemporaneous wealth on consumption. |
