Hellerstein Judith K, Neumark David, McInerney Melissa
Department of Economics and MPRC, University of Maryland, and NBER.
J Urban Econ. 2008 Sep;64(2):464-479. doi: 10.1016/j.jue.2008.04.003.
We contrast the spatial mismatch hypothesis with what we term the racial mismatch hypothesis - that the problem is not a lack of jobs, per se, where blacks live, but a lack of jobs where blacks live into which blacks are hired. We first report new evidence on the spatial mismatch hypothesis, using data from Census Long-Form respondents. We construct direct measures of the presence of jobs in detailed geographic areas, and find that these job density measures are related to employment of black male residents in ways that would be predicted by the spatial mismatch hypothesis - in particular that spatial mismatch is primarily an issue for low-skilled black male workers. We then look at mismatch along not only spatial lines but racial lines as well, by estimating the effects of job density measures that are disaggregated by race. We find that it is primarily black job density that influences black male employment, whereas white job density has little if any influence on their employment. The evidence implies that space alone plays a relatively minor role in low black male employment rates.
我们将空间错配假说与我们所称的种族错配假说进行对比——问题并非在于黑人居住地区本身缺乏工作岗位,而是在于黑人居住地区缺乏黑人能够被雇佣的工作岗位。我们首先利用人口普查长表受访者的数据,报告关于空间错配假说的新证据。我们构建了详细地理区域内工作岗位存在情况的直接衡量指标,并发现这些就业密度指标与黑人男性居民的就业情况存在空间错配假说所预测的相关关系——特别是空间错配主要是低技能黑人男性工人面临的问题。然后,我们通过估计按种族分类的就业密度指标的影响,不仅考察了空间错配,还考察了种族错配。我们发现,主要是黑人就业密度影响黑人男性就业,而白人就业密度对他们的就业几乎没有影响。证据表明,在低黑人男性就业率方面,单纯的空间因素所起的作用相对较小。