Great post from Tyler Cowen.
"There
has been a recent kerfluffle over the Sabia and Burkhauser paper
(ungated here) suggesting that
minimum wage increases do not very much help the American poor. Sabia and
Burkhauser report facts such as this:
Only
11.3% of workers who will gain from an increase in the federal minimum wage to
$9.50 per hour live in poor households…Of those who will gain, 63.2% are second
or third earners living in households with incomes three times the poverty
line, well above 50,233, the income of the median household in 2007.
That’s
what I call not very well targeted toward helping the poor. To the best
of my knowledge, these numbers have not been refuted or even questioned.
There
has been a significant campaign lately to elevate this Arindrajit Dube piece
(pdf) into a rebuttal of Sabia and Burkhauser. I’ve now read through it,
and while it is pretty dense, I don’t see that it supplies any such effective
rebuttal (it is however a valuable paper, and survey paper, in its own right).
Here is
an excerpt from the Dube paper:
An
additional contribution of the paper is to apply the recentered influence
function (RIF) regression approach of Firpo, Fortin and Lemieux (2009) to
estimate unconditional quantile partial effects (UQPEs) of minimum wages on the
equivalized family income distribution.
Dube
also writes:
The
elasticity of the poverty rate with respect to the minimum wage ranges between
-0.12 and -0.37 across specifications with alternative forms of time-varying
controls and lagged effects; most of these estimates are statistically
significant at conventional levels.
Dube in
fact counts up twelve papers on the side of “minimum wage hikes can make a
reasonably-sized dent in poverty.”
Now, I
don’t intend this as any kind of snide, anti-theory, or anti-technique comment,
but when there is a clash between simple, validated observations and
complicated regressions, no matter how state of the art the latter may be, I
don’t always side with the regressions.
One
interpretation of the Dube results is:
a)
although a minimum wage hike applies only to some members of a community, its
morale or network effects spread its benefits much more widely, or,
b)
through some kind of chain link effect, a minimum wage hike pushes up the
entire distribution of wages for lower-income workers
Alternatively,
I would try
c) the
public choice critique of econometrics is correct, these minimum wage hikes are
all endogenous to complex factors, and no one has a properly specified
model. We are seeing correlations rather than causation, despite all
attempts to adjust for confounding variables.
So far
I am voting for c). And there is a very simple story to tell here, namely
that states which are good at fighting poverty, through whatever means, also
tend to have higher minimum wages for political economy reasons. It seems
unlikely that controls are going to pick up that effect fully.
Or try
another model, more tongue in cheek but instructive nonetheless. If government
is quite benevolent and omniscient, and has always done exactly the right thing
in the past, we will see in the data that the minimum hikes of the past are at
least somewhat effective in fighting poverty. At the same time, the
remaining options on possible minimum wage hikes will not help at all.
Dube’s
paper, econometrically speaking, is a clear advance over Sabia and
Burkhauser. But Dube pays little heed to integrating econometric results
with common sense facts and observations about the economy. As Bryan
Caplan has stated, the knowledge and judicious invocation of simple facts about
the economy is one of the most underrated skills in professional economics.
I also
get a bit nervous when the number of studies on one side of a question is
counted and weighed up against common facts. Some of these pieces are
simply measuring the same correlation in (somewhat) differing ways, and the
number of them says more about the publication process than anything
else. These pieces also are not all in what I would call great
journals. Maybe that is an unfair metric of judgment — I am writing this
on a blog, after all. Nonetheless I looked at the list of cited
sources and pulled out the two clumps with what appeared to be the highest
academic pedigree, in terms of both economist and outlet.
The
first clump is a group of papers by David Neumark, with co-authors. I
find that Neumark does not himself think that minimum wage hikes do much if
anything to help poverty, and he has a good claim at being the world’s number
one expert on the economics of minimum wages. In fairness to Dube, he
does have some good (although I would not say decisive) criticisms of one of
Neumark’s papers pushing this line.
The
second source is a paper by Autor, Manning, and Smith, an NBER
working paper. They write “…the implied effect of the minimum
wage on the actual wage distribution is smaller than the effect of the minimum
wage on the measured wage distribution.”
Of
course that hardly settles it.
You
might call this one a draw, but then we return to the question of where the
burden of proof lies. I’m still stuck on, to repeat the above quotation,
this:
Only
11.3% of workers who will gain from an increase in the federal minimum wage to
$9.50 per hour live in poor households…Of those who will gain, 63.2% are second
or third earners living in households with incomes three times the poverty
line, well above 50,233, the income of the median household in 2007.
From
where I stand, that hasn’t yet been knocked down."
There has been a recent kerfluffle over the
Sabia and Burkhauser paper (ungated
here)
suggesting that minimum wage increases do not very much help the
American poor. Sabia and Burkhauser report facts such as this:
Only 11.3% of workers who will gain from an increase in
the federal minimum wage to $9.50 per hour live in poor households…Of
those who will gain, 63.2% are second or third earners living in
households with incomes three times the poverty line, well above 50,233,
the income of the median household in 2007.
That’s what I call not very well targeted toward helping the poor.
To the best of my knowledge, these numbers have not been refuted or even
questioned.
There has been a significant campaign lately to elevate
this Arindrajit Dube piece
(pdf) into a rebuttal of Sabia and Burkhauser. I’ve now read through
it, and while it is pretty dense, I don’t see that it supplies any such
effective rebuttal (it is however a valuable paper, and survey paper, in
its own right).
Here is an excerpt from the Dube paper:
An additional contribution of the paper is to apply the
recentered influence function (RIF) regression approach of Firpo, Fortin
and Lemieux (2009) to estimate unconditional quantile partial effects
(UQPEs) of minimum wages on the equivalized family income distribution.
Dube also writes:
The elasticity of the poverty rate with respect to the
minimum wage ranges between -0.12 and -0.37 across specifications with
alternative forms of time-varying controls and lagged effects; most of
these estimates are statistically significant at conventional levels.
Dube in fact counts up twelve papers on the side of “minimum wage hikes can make a reasonably-sized dent in poverty.”
Now, I don’t intend this as any kind of snide, anti-theory, or
anti-technique comment, but when there is a clash between simple,
validated observations and complicated regressions, no matter how state
of the art the latter may be, I don’t always side with the regressions.
One interpretation of the Dube results is:
a) although a minimum wage hike applies only to some members of a
community, its morale or network effects spread its benefits much more
widely, or,
b) through some kind of chain link effect, a minimum wage hike pushes
up the entire distribution of wages for lower-income workers
Alternatively, I would try
c) the public choice critique of econometrics is correct, these
minimum wage hikes are all endogenous to complex factors, and no one has
a properly specified model. We are seeing correlations rather than
causation, despite all attempts to adjust for confounding variables.
So far I am voting for c). And there is a very simple story to tell
here, namely that states which are good at fighting poverty, through
whatever means, also tend to have higher minimum wages for political
economy reasons. It seems unlikely that controls are going to pick up
that effect fully.
Or try another model, more tongue in cheek but instructive
nonetheless. If government is quite benevolent and omniscient, and has
always done exactly the right thing in the past, we will see in the data
that the minimum hikes of the past are at least somewhat effective in
fighting poverty. At the same time, the remaining options on possible
minimum wage hikes will not help at all.
Dube’s paper, econometrically speaking, is a clear advance over Sabia
and Burkhauser. But Dube pays little heed to integrating econometric
results with common sense facts and observations about the economy. As
Bryan Caplan has stated, the knowledge and judicious invocation of
simple facts about the economy is one of the most underrated skills in
professional economics.
I also get a bit nervous when the number of studies on one side of a
question is counted and weighed up against common facts. Some of these
pieces are simply measuring the same correlation in (somewhat) differing
ways, and the number of them says more about the publication process
than anything else. These pieces also are not all in what I would call
great journals. Maybe that is an unfair metric of judgment — I am
writing this on a blog, after all. Nonetheless I looked at the list of
cited sources and pulled out the two clumps with what appeared to be
the highest academic pedigree, in terms of both economist and outlet.
The first clump is a group of papers by David Neumark, with
co-authors. I find that Neumark does not himself think that minimum
wage hikes do much if anything to help poverty, and he has a good claim
at being the world’s number one expert on the economics of minimum
wages. In fairness to Dube, he does have some good (although I would
not say decisive) criticisms of one of Neumark’s papers pushing this
line.
The second source is a paper by
Autor, Manning, and Smith, an NBER working paper.
They write “…the implied effect of the minimum wage on the actual wage
distribution is smaller than the effect of the minimum wage on the
measured wage distribution.”
Of course that hardly settles it.
You might call this one a draw, but then we return to the question of
where the burden of proof lies. I’m still stuck on, to repeat the
above quotation, this:
Only 11.3% of workers who will gain from an increase in
the federal minimum wage to $9.50 per hour live in poor households…Of
those who will gain, 63.2% are second or third earners living in
households with incomes three times the poverty line, well above 50,233,
the income of the median household in 2007.
From where I stand, that hasn’t yet been knocked down.
- See more at:
http://marginalrevolution.com/marginalrevolution/2014/01/how-well-does-a-minimum-wage-boost-target-the-poor.html#sthash.i0hHhO0N.dpuf
There has been a recent kerfluffle over the
Sabia and Burkhauser paper (ungated
here)
suggesting that minimum wage increases do not very much help the
American poor. Sabia and Burkhauser report facts such as this:
Only 11.3% of workers who will gain from an increase in
the federal minimum wage to $9.50 per hour live in poor households…Of
those who will gain, 63.2% are second or third earners living in
households with incomes three times the poverty line, well above 50,233,
the income of the median household in 2007.
That’s what I call not very well targeted toward helping the poor.
To the best of my knowledge, these numbers have not been refuted or even
questioned.
There has been a significant campaign lately to elevate
this Arindrajit Dube piece
(pdf) into a rebuttal of Sabia and Burkhauser. I’ve now read through
it, and while it is pretty dense, I don’t see that it supplies any such
effective rebuttal (it is however a valuable paper, and survey paper, in
its own right).
Here is an excerpt from the Dube paper:
An additional contribution of the paper is to apply the
recentered influence function (RIF) regression approach of Firpo, Fortin
and Lemieux (2009) to estimate unconditional quantile partial effects
(UQPEs) of minimum wages on the equivalized family income distribution.
Dube also writes:
The elasticity of the poverty rate with respect to the
minimum wage ranges between -0.12 and -0.37 across specifications with
alternative forms of time-varying controls and lagged effects; most of
these estimates are statistically significant at conventional levels.
Dube in fact counts up twelve papers on the side of “minimum wage hikes can make a reasonably-sized dent in poverty.”
Now, I don’t intend this as any kind of snide, anti-theory, or
anti-technique comment, but when there is a clash between simple,
validated observations and complicated regressions, no matter how state
of the art the latter may be, I don’t always side with the regressions.
One interpretation of the Dube results is:
a) although a minimum wage hike applies only to some members of a
community, its morale or network effects spread its benefits much more
widely, or,
b) through some kind of chain link effect, a minimum wage hike pushes
up the entire distribution of wages for lower-income workers
Alternatively, I would try
c) the public choice critique of econometrics is correct, these
minimum wage hikes are all endogenous to complex factors, and no one has
a properly specified model. We are seeing correlations rather than
causation, despite all attempts to adjust for confounding variables.
So far I am voting for c). And there is a very simple story to tell
here, namely that states which are good at fighting poverty, through
whatever means, also tend to have higher minimum wages for political
economy reasons. It seems unlikely that controls are going to pick up
that effect fully.
Or try another model, more tongue in cheek but instructive
nonetheless. If government is quite benevolent and omniscient, and has
always done exactly the right thing in the past, we will see in the data
that the minimum hikes of the past are at least somewhat effective in
fighting poverty. At the same time, the remaining options on possible
minimum wage hikes will not help at all.
Dube’s paper, econometrically speaking, is a clear advance over Sabia
and Burkhauser. But Dube pays little heed to integrating econometric
results with common sense facts and observations about the economy. As
Bryan Caplan has stated, the knowledge and judicious invocation of
simple facts about the economy is one of the most underrated skills in
professional economics.
I also get a bit nervous when the number of studies on one side of a
question is counted and weighed up against common facts. Some of these
pieces are simply measuring the same correlation in (somewhat) differing
ways, and the number of them says more about the publication process
than anything else. These pieces also are not all in what I would call
great journals. Maybe that is an unfair metric of judgment — I am
writing this on a blog, after all. Nonetheless I looked at the list of
cited sources and pulled out the two clumps with what appeared to be
the highest academic pedigree, in terms of both economist and outlet.
The first clump is a group of papers by David Neumark, with
co-authors. I find that Neumark does not himself think that minimum
wage hikes do much if anything to help poverty, and he has a good claim
at being the world’s number one expert on the economics of minimum
wages. In fairness to Dube, he does have some good (although I would
not say decisive) criticisms of one of Neumark’s papers pushing this
line.
The second source is a paper by
Autor, Manning, and Smith, an NBER working paper.
They write “…the implied effect of the minimum wage on the actual wage
distribution is smaller than the effect of the minimum wage on the
measured wage distribution.”
Of course that hardly settles it.
You might call this one a draw, but then we return to the question of
where the burden of proof lies. I’m still stuck on, to repeat the
above quotation, this:
Only 11.3% of workers who will gain from an increase in
the federal minimum wage to $9.50 per hour live in poor households…Of
those who will gain, 63.2% are second or third earners living in
households with incomes three times the poverty line, well above 50,233,
the income of the median household in 2007.
From where I stand, that hasn’t yet been knocked down.
- See more at:
http://marginalrevolution.com/marginalrevolution/2014/01/how-well-does-a-minimum-wage-boost-target-the-poor.html#sthash.i0hHhO0N.dpuf
There has been a recent kerfluffle over the
Sabia and Burkhauser paper (ungated
here)
suggesting that minimum wage increases do not very much help the
American poor. Sabia and Burkhauser report facts such as this:
Only 11.3% of workers who will gain from an increase in
the federal minimum wage to $9.50 per hour live in poor households…Of
those who will gain, 63.2% are second or third earners living in
households with incomes three times the poverty line, well above 50,233,
the income of the median household in 2007.
That’s what I call not very well targeted toward helping the poor.
To the best of my knowledge, these numbers have not been refuted or even
questioned.
There has been a significant campaign lately to elevate
this Arindrajit Dube piece
(pdf) into a rebuttal of Sabia and Burkhauser. I’ve now read through
it, and while it is pretty dense, I don’t see that it supplies any such
effective rebuttal (it is however a valuable paper, and survey paper, in
its own right).
Here is an excerpt from the Dube paper:
An additional contribution of the paper is to apply the
recentered influence function (RIF) regression approach of Firpo, Fortin
and Lemieux (2009) to estimate unconditional quantile partial effects
(UQPEs) of minimum wages on the equivalized family income distribution.
Dube also writes:
The elasticity of the poverty rate with respect to the
minimum wage ranges between -0.12 and -0.37 across specifications with
alternative forms of time-varying controls and lagged effects; most of
these estimates are statistically significant at conventional levels.
Dube in fact counts up twelve papers on the side of “minimum wage hikes can make a reasonably-sized dent in poverty.”
Now, I don’t intend this as any kind of snide, anti-theory, or
anti-technique comment, but when there is a clash between simple,
validated observations and complicated regressions, no matter how state
of the art the latter may be, I don’t always side with the regressions.
One interpretation of the Dube results is:
a) although a minimum wage hike applies only to some members of a
community, its morale or network effects spread its benefits much more
widely, or,
b) through some kind of chain link effect, a minimum wage hike pushes
up the entire distribution of wages for lower-income workers
Alternatively, I would try
c) the public choice critique of econometrics is correct, these
minimum wage hikes are all endogenous to complex factors, and no one has
a properly specified model. We are seeing correlations rather than
causation, despite all attempts to adjust for confounding variables.
So far I am voting for c). And there is a very simple story to tell
here, namely that states which are good at fighting poverty, through
whatever means, also tend to have higher minimum wages for political
economy reasons. It seems unlikely that controls are going to pick up
that effect fully.
Or try another model, more tongue in cheek but instructive
nonetheless. If government is quite benevolent and omniscient, and has
always done exactly the right thing in the past, we will see in the data
that the minimum hikes of the past are at least somewhat effective in
fighting poverty. At the same time, the remaining options on possible
minimum wage hikes will not help at all.
Dube’s paper, econometrically speaking, is a clear advance over Sabia
and Burkhauser. But Dube pays little heed to integrating econometric
results with common sense facts and observations about the economy. As
Bryan Caplan has stated, the knowledge and judicious invocation of
simple facts about the economy is one of the most underrated skills in
professional economics.
I also get a bit nervous when the number of studies on one side of a
question is counted and weighed up against common facts. Some of these
pieces are simply measuring the same correlation in (somewhat) differing
ways, and the number of them says more about the publication process
than anything else. These pieces also are not all in what I would call
great journals. Maybe that is an unfair metric of judgment — I am
writing this on a blog, after all. Nonetheless I looked at the list of
cited sources and pulled out the two clumps with what appeared to be
the highest academic pedigree, in terms of both economist and outlet.
The first clump is a group of papers by David Neumark, with
co-authors. I find that Neumark does not himself think that minimum
wage hikes do much if anything to help poverty, and he has a good claim
at being the world’s number one expert on the economics of minimum
wages. In fairness to Dube, he does have some good (although I would
not say decisive) criticisms of one of Neumark’s papers pushing this
line.
The second source is a paper by
Autor, Manning, and Smith, an NBER working paper.
They write “…the implied effect of the minimum wage on the actual wage
distribution is smaller than the effect of the minimum wage on the
measured wage distribution.”
Of course that hardly settles it.
You might call this one a draw, but then we return to the question of
where the burden of proof lies. I’m still stuck on, to repeat the
above quotation, this:
Only 11.3% of workers who will gain from an increase in
the federal minimum wage to $9.50 per hour live in poor households…Of
those who will gain, 63.2% are second or third earners living in
households with incomes three times the poverty line, well above 50,233,
the income of the median household in 2007.
From where I stand, that hasn’t yet been knocked down.
- See more at:
http://marginalrevolution.com/marginalrevolution/2014/01/how-well-does-a-minimum-wage-boost-target-the-poor.html#sthash.i0hHhO0N.dpuf