222 research outputs found
Crime minimization and racial bias: what can we learn from police search data?
No full textIs variation by motorist race in the success rate of searches informative about racial bias if police are motivated by crime minimisation rather than success-rate maximisation? We show that the basic idea of extracting information from 'hit rates' may still be valid, provided one can verify some simple restrictions on the joint distribution of criminality by race. We also extend these results to the case where the police minimise the rate of unpunished crime
Perceptions of economic vulnerability: First evidence from the survey of economic expectations
No full textThis report uses data from the authors' National Survey of Economic Expectations to describe how, during 1994, working Americans with health insurance perceived the risk of near-term deterioration in their economic status. Perceived economic vulnerability is measured through responses to questions eliciting subjective probabilities of loss of health insurance, of burglary, and of job loss. We find that respondents tend to rank burglary as the most likely of the three events, followed by job loss, and then loss of health insurance. The perceived risk of crime victimization is much higher than the realized rate of victimization. Male and female respondents have similar risk perceptions but blacks have much greater perceived vulnerability than do whites.
Perceptions of Economic Insecurity: Evidence from the Survey of Economic Expectations
No full textWe have recently initiated the Survey of Economic Expectations (SEE) in an effort to learn how Americans perceive their near-term futures. This paper use SEE data on over two thousand labor force participants interviewed in 1994 and 1995 to describe how Americans in the labor force perceive the risk of near-term economic misfortune. We measure economic insecurity through responses to questions eliciting subjective probabilities of three events in the year ahead: absence of health insurance, victimization by burglary, and job loss. With item response rates exceeding 98 percent, respondents clearly are willing to answer the expectations questions and they appear to do so in a meaningful way. Using the responses to classify individuals as relatively secure, relatively insecure, and highly insecure, we find that respondents with a high risk of one adverse outcome tend also to perceive high risks of the other outcomes. Economic insecurity tends to decline with age and with schooling. Black respondents perceive much greater insecurity than do whites, especially among males. Within the period 1994-1995, we find some time-series variation in insecurity but no clear trends. We find that expectations and realizations of health insurance coverage and of job loss tend to match up quite closely, but respondents substantially overpredict the risk of burglary.
Using expectations data to study subjective income expectations
No full textWe have collected data on the one-year-ahead income expectations of members of American households in our Survey of Economic Expectations (SEE), a module of a national continuous telephone survey conducted at the University of Wisconsin. The income-expectations questions take this form: "What do you think is the percent chance (or what are the chances out of 100) that your total household income, before taxes, will be less than Y over the next 12 months?" We use the responses to a sequence of such questions posed for different income thresholds Y to estimate each respondent's subjective probability distribution for next year's household income. We use the estimates to study the cross- sectional variation in income expectations one year into the future.
Retirement Savings Portfolio Management
No full textWe assess the welfare implications of alternative retirement plan investment options given that households may not invest according to optimal portfolio choice theory but may instead use simple decision rules. We simulate the performance of lifestyle, lifecycle, and other simple strategies for allocating retirement savings. We find that if investors use simple rules of thumb to choose investments, then the impact of these strategies on welfare depend to a large extent on the choice set they are offered. If larger choice sets cause them to undertake more risk, then risk tolerant individuals may tend to be made better off. If larger choice sets cause them to reduce suboptimally low levels of portfolio risk, then the increased choice set may make them substantially worse off. The welfare effects of plan designs that induce lifecycle investing, which tends to be conservative over the lifetime, therefore depend crucially on the counterfactual portfolio composition, as well as preferences and non-retirement wealth.
Comparing predictions and outcomes: theory and application to income changes.
No full textHousehold surveys often elicit respondents' intentions or predictions of future outcomes. The survey questions may ask respondents to choose among a selection of (ordered) response categories. If panel data or repeated cross-sections are available, predictions may be compared with realized outcomes. The categorical nature of the predictions data, however, complicates this comparison. Generalizing previous findings on binary intentions data, we derive bounds on features of the empirical distribution of realized outcomes under the "best-case" hypothesis that respondents form rational expectations and that reported expectations are best predictions of future outcomes. These bounds are shown to depend on the assumed model of how respondents form their "best prediction" when forced to choose among (ordered) categories. An application to data on income change expectations and realizations illustrates how alternative response models may be used to test the best-case hypothesis.
Perceptions of Economic Insecurity: Evidence from the Survey of Economic Expectations
No full textWe have recently initiated the Survey of Economic Expectations (SEE) to learn how Americans perceive their near-term futures. This paper uses SEE data on over two thousand labor force participants interviewed in 1994 and 1995 to describe how Americans in the labor force perceive the risk of near-term economic misfortune. We measure economic insecurity through responses to questions eliciting subjective probabilities of three events in the year ahead: absence of health insurance, victimization by burglary, and job loss. With item response rates exceeding 98 percent, respondents clearly are willing to answer the expectations questions and they appear to do so in a meaningful way. Using the responses to classify individuals as relatively secure, relatively insecure, and highly insecure, we find that respondents with a high risk of one adverse outcome tend also to perceive high risks of the other outcomes. Economic insecurity tends to decline with age and with schooling. Black respondents perceive much greater insecurity than do whites, especially among males. Within the period 1994-1995, we find some time-series variation in insecurity but no clear trends. We find that expectations and realizations of health insurance coverage and of jobs tend to match up quite closely, but respondents substantially overpredict the risk of burglary.
Eliciting student expectations of the returns to schooling
No full textWe report here on the design and first application of an interactive computer-administered personal interview (CAPI) survey eliciting from high school students and college undergraduates their expectations of the income they would earn if they were to complete different levels of schooling. We also elicit respondents' beliefs about current earnings distributions. Whereas a scattering of earlier studies have elicited point expectations of earnings unconditional on future schooling, we elicit subjective earnings distributions under alternative scenarios for future earnings. We find that respondents, even ones as young as high school juniors, are willing and able to respond meaningfully to questions eliciting their earnings expectations in probabilistic form. Respondents vary considerably in their earnings expectations, but there is a common belief that the returns to a college education are positive and that earnings rise between ages 30 and 40. There is a common belief that one's own future earnings are rather uncertain. Moreover, respondents tend to overestimate the current degree of earnings inequality in American society.
Comparing Predictions and Outcomes: Theory and Application to Income Changes
No full textHousehold surveys often elicit respondents' intentions or predictions of future outcomes. The survey questions may ask respondents to choose among a selection of (ordered) response categories. If panel data or repeated cross-sections are available, predictions may be compared with realized outcomes. The categorical nature of the predictions data, however, complicates this comparison. Generalizing previous findings on binary intentions data, we derive bounds on features of the empirical distribution of realized outcomes under the "best-case" hypothesis that respondents have rational expectations and that reported expectations are best predictions of future outcomes. These bounds are shown to depend on the assumed model of how respondents form their "best prediction" when forced to choose among (ordered) categories. An application to data on income change expectations and realized income changes illustrates how alternative response models may be used to test the best-case hypothesis.predictions;categorical data;loss function;income growth
Is Earnings Uncertainty Relevant for Educational Choice? An Empirical Analysis for China
No full textWe use the method of Dominitz and Manski (1996) to solicit anticipated wage distributions for continuing to a Master degree or going to work after completing the Bachelor degree. The means of the distributions have an effect on intention to continue as predicted by theory. The dispersions in these individual distributions have no effect on intention to continue, suggesting that anticipated earnings risk does not play a role in the decision.educational choice, wage expectations
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