Question

David Neumark and William Wascher have criticized a 1994 study of these policies, whose results they have failed to replicate. For 10 points each:
[10m] Name these policies that Alan Krueger and David Card analyzed with a difference-in-differences approach comparing New Jersey and Pennsylvania unemployment rates.
ANSWER: minimum wage laws [prompt on wage laws; prompt on living wage]
[10e] Difference-in-differences estimation compares a treatment group with one of these groups. These groups may still experience a placebo effect.
ANSWER: control group
[10h] These variables, which satisfy the exclusion restriction, are often used in natural experiments. Krueger and Joshua Angrist used one of these exogenous variables to study the draft.
ANSWER: instrumental variables [or IVs; accept instruments]
<Social Science - Social Science - Economics>

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