August 02, 2016

More on the uselessness of ranking law reviews by Google Scholar h-indices

The other day I remarked on what should have been obvious, namely, that Google Scholar rankings of law reviews by impact are nonsense, providing prospective authors with no meaningful information about the relative impact of publishing an article in comparable law reviews.  (Did you know that it's better to publish in the Fordham Law Review for impact than in the Duke Law Journal?)  The reason is simple:  the Google Scholar rankings do not adjust for the volume of output--law reviews that turn out more issues and articles each year will rank higher than otherwise comparable law reviews (with actual comparable impact) simply because of the volume of output.

When Google Scholar rankings of philosophy journals first came out, a journal called Synthese came out #1.  Synthese is a good journal, but it was obviously nonsense that the average impact of an article there was greater than any of the actual top journals in philosophy.   The key fact about Synthese is that it publishes five to ten times as many articles per year than the top philosophy journals.   When another philosopher adjusted the Google Scholar results for volume of publication, Synthese dropped from #1 to #24.

Alas, various law professors have dug in their heels trying to explain that this nonsense Google Scholar ranking of law reviews is not, in fact, affected by volume of output.  I was initially astonished, but now see that many naïve enthusiasts apparently do not not understand the metrics and do not realize how sloppy Google Scholar is in terms of what it picks up. 

Let's start with the formula Google Scholar uses in its journal rankings:

The h-index of a publication is the largest number h such that at least h articles in that publication were cited at least h times each. For example, a publication with five articles cited by, respectively, 17, 9, 6, 3, and 2, has the h-index of 3.

The h-core of a publication is a set of top cited h articles from the publication. These are the articles that the h-index is based on. For example, the publication above has the h-core with three articles, those cited by 17, 9, and 6.

The h-median of a publication is the median of the citation counts in its h-core. For example, the h-median of the publication above is 9. The h-median is a measure of the distribution of citations to the articles in the h-core.

Finally, the h5-index, h5-core, and h5-median of a publication are, respectively, the h-index, h-core, and h-median of only those of its articles that were published in the last five complete calendar years.

Obviously, any journal that publishes more articles per year has more chances of publishing highly-cited articles, which then affects both the h-core result and the h-median result.  But that's only part of the problem, though that problem is real and obvious enough.   The much more serious problem is that Google Scholar picks up a lot of "noise," i.e., citations that aren't really citations.  So, for example, Google Scholar records as a citation any reference to the contents of the law review in an index of legal periodicals.  Any journal that publishes more issues will appear more often in such indices obviously.   Google Scholar picks up self-references in a journal to the articles it has published in a given year.   Google Scholar even picks up SSRN "working paper series" postings in which all other articles by someone on a faculty are also listed at the end as from that school.   (Google Scholar gradually purges some of these fake cites, but it takes a long time.)   Volume of publication inflates a journal's "impact" ranking because Google Scholar is not as discerning as some law professors think.


August 2, 2016 in Advice for Academic Job Seekers, Of Academic Interest, Professional Advice, Rankings | Permalink

July 20, 2016

Obligations of law faculty to disclose research supported by those with a stake in the findings?

Prof. Jeff Sovern (St. John's) writes:

I have been wondering about the extent of law professors’ ethical obligations to disclose when their research has been supported by a grant from a group with a stake in the findings, and because you are the de facto moderator of the law professor village square, I wondered if you would consider posting the item below to your blog and seeking comment. I apologize for its length.

 

A grant that results in the publication of a law review article or similar publication should be acknowledged in the article, but what about later work in the same general area that espouses a policy position consistent with what the grantor would have wanted? That issue is germane to a 2013 article in The Nation, The Scholars Who Shill for Wall Street which criticized academics (notably, George Mason’s Todd Zywicki) for failing to disclose in papers, congressional testimony, speeches, op-eds, etc. compensated work for the financial industry.  The AALS has been rather vague on this subject, but here’s what it said in its Statement of Good Practices by Law Professors in the Discharge of Their Ethical and Professional Responsibilities: “Sponsored or remunerated research should always be acknowledged with full disclosure of the interests of the parties. If views expressed in an article were also espoused in the course of representation of a client or in consulting, this should be acknowledged.” It’s not at all clear to me that the conduct described in The Nation article violated that policy.

 

My own concern is more personal.  My law school (St. John’s) accepted a grant from an organization with ties to a particular industry.  My co-authors and I conducted a survey financed by this grant (we had to purchase a software license, compensate those who completed the survey, and so on) and published a law review article about our findings.  We had complete control over the survey and what we wrote about our findings and the grantor did not comment on them; in all respects, its behavior was exemplary.  We acknowledged the funder in the article.  Later, I wrote some op-eds about our work, and acknowledged the grantor again.  Still later, I wrote op-eds about the broader subject, giving no more than a sentence to our research, or not mentioning it at all. Do I have an obligation in the later op-eds to mention the grantor?  Would readers want to know that my law school accepted money from the grantor which supported my research?  If your answer is no, do you see anything wrong with the conduct described in The Nation article?  If you answer is yes, would it be different if the funder were not associated with a particular industry or point of view?

 

Perhaps the AALS would consider updating and elaborating on its statement.  It might be a good project for professors specializing in professional responsibility. When the AALS re-evaluates a school for membership every seven years, does it inquire into compliance with this aspect of its Statement of Good Practices?  Should it? 

Good questions, I've opened it for comments.  (Submit your comment only once, comments are moderated, and may take awhile to appear.)


July 20, 2016 in Legal Profession, Of Academic Interest, Professional Advice | Permalink | Comments (1)

July 18, 2016

A first sign of trouble with the new Elsevier-owned SSRN

July 12, 2016

Cooter & Ulen's famous Law & Econ text is now available for free download...

...from Berkeley.

(Thanks to Dean Rowan for the pointer.)


July 12, 2016 in Of Academic Interest, Professional Advice, Student Advice | Permalink

June 30, 2016

The "Chicago-Style" article

Finally, a clear explanation of what most of my colleagues are doing!


June 30, 2016 in Advice for Academic Job Seekers, Faculty News, Of Academic Interest, Professional Advice | Permalink

June 18, 2016

6 factual errors and several misleading statements in recent New York Times story by Noam Scheiber

New York Times reporter Noam Scheiber was kind enough to respond to my open letter and ask if I could point to anything specifically factually wrong with his story.  My response is below.

 

Noam,

Thanks so much for responding. Yes, there are at least 6 factual errors in the article, and several misleading statements.

I’ll start with my interview with Acosta from earlier today, and then we can discuss empirics. Here’s what Acosta said:

"There’s no way I could pay back my student loans under a 10-year standard payment plan. With my current income, I can support myself and my family, but I need to keep my loan payments low for now. I’ve been practicing law since May, and I’m on track to make $40,000 this year. I think my income will go up over time, but I don’t know if it will be enough for me to pay back my loans without debt forgiveness after 20 years. What happens is up in the air.   I’m optimistic that I can make this work and pay my student loans. I view the glass now as half full.

 

Valparaiso did not mislead me about employment prospects. I had done my research. I knew the job market was competitive going in. I knew what debt I was walking into. I think very few Americans don’t have debt, but for me it was an investment. I saw the debt as an investment in my career, my future, and my family.

 

Valparaiso gave a guy like me, a non-traditional student a shot at becoming a lawyer. Most law schools say they take a holistic approach, but they don’t really do it. I had to work hard to overcome adversity, and they gave me a shot to go to law school and to succeed. They gave me a shot at something that I wanted to do where most law schools wouldn’t.

 

My situation might be different from other law students who start law school right out of college. I was older and I have a family to support."

On to empirics.

The story states that:

“While demand for other white-collar jobs has rebounded since the recession, law firms and corporations are finding that they can make do with far fewer full-time lawyers than before.”

This is incorrect.

First, the number of jobs for lawyers has increased beyond pre-recession levels (2007 or earlier), both in absolute terms and relative to growth in overall employment. (error #1)

Focusing only on lawyers working full-time in law firms or for businesses (I’m not sure why you exclude those working in government), there are more full-time corporate and law firm lawyers in 2014 according to the  U.S. Census Bureau’s Current Population Survey (CPS)—870,000—than in 2007—786,000. There have been more full-time corporate and law firm lawyers in every year from 2009 on than there were in 2007 and earlier.

You were looking at NALP or ABA data, which is measured at a single point in time—9 or 10 months after graduation—and is therefore much less representative of outcomes for law graduates—even recent law graduates—than Census data. Indeed, many law graduates who will eventually gain admission to a state bar will not have done so as of the date when NALP collects data. NALP and the ABA also use different definitions from the Census, so you cannot readily use their data to compare law graduates to others.

The trend of growth in lawyer jobs holds true for other cuts of the data (all lawyers; all full time lawyers) using other data sources—U.S. Census or Department of Labor (BLS OES) data.[i]

This is in spite of large declines in law school enrollments, which would be expected to reduce the number of working lawyers.

Second, employment has not rebounded to pre-recession (2007 or earlier) levels outside of law. (error #2)

Continue reading


June 18, 2016 in Guest Blogger: Michael Simkovic, Legal Profession, Professional Advice, Science, Student Advice, Weblogs | Permalink

June 17, 2016

An Open Letter to New York Times Journalist Noam Scheiber: Journalists Should Consult Peer-Reviewed Research, Not Bloggers (Michael Simkovic)

To: noamscheiber@gmail.com

Dear Mr. Scheiber:

Have you seen this line of peer-reviewed research, which estimates the boost to earning from a law degree including the substantial proportion of law graduates who do not practice law? 

High quality nationally representative data from the U.S. Census Bureau, analyzed using standard and widely accepted econometric techniques, shows that even toward the bottom of the distribution, the value of a law degree (relative to a terminal bachelor’s degree) is much greater than the costs.

All of the data suggests that this has not changed since the financial crisis. The economy is worse and young people are facing more challenges in the job market, but law graduates continue to have the same relative advantage over bachelor’s degree holders as they have had in the past:

These findings have been covered in the New York Times before: 

They have also been covered in other major news outlets such as The Atlantic, The Washington Post, CBS, Slate, etc.  And more importantly, they have been cited favorably in the scholarly literature.

Data from the U.S. Census and the Department of Labor Bureau of Labor Statistics shows that the number of lawyers has grown since the financial crisis, both in absolute terms and relative to overall employment.  

Data from the Department of Education shows that law school graduates, even from very low-ranked law schools, have exceptionally low student loan default rates.

I have a number of concerns about factual inaccuracies in your recent story, “An Expensive Law Degree, and No Place to Use It” and your reliance on “experts” such as Paul Campos who lack any technical expertise or even basic financial or statistical literacy.

Your readers would receive more reliable information if you concentrated less on sources like Paul Campos and internet “scamblogs” and focused instead on peer-reviewed research by professional economists using high quality data and well-established methods of statistical analysis.

 

UPDATES:

June 18, 2016: Noam Scheiber replies and I respond by re-interviewing Acosta and pointing out specific factual errors in Scheiber's story.

June 20, 2016: I explain different data sources that are useful for counting lawyers.

June 21, 2016: Steven Davidoff Solomon weighs in at N.Y. Times Dealbook, citing my research and supporting my points.

June 21, 2016, 10:05pm EST:  Noam Scheiber sent a lengthy response by email and posted his response to his facebook page.   Scheiber informs me that his response was reviewed by his editors at the New York Times.  

June 24: I responded to Scheiber and explain Why The New York Times Should Correct The Remaining Factual Errors in Its Law School Coverage.  In response, the New York Times posted a correction to the most minor of the 5 remaining errors.


June 17, 2016 in Guest Blogger: Michael Simkovic, Legal Profession, Professional Advice, Weblogs | Permalink

June 09, 2016

Journalism researcher: To correct misinformation, essential to monitor and respond immediately (Michael Simkovic)

Scholars Strategy Network's No Jargon: 13: The Misinformation Age
https://overcast.fm/+Feqoo83GI

Professor Brian Southwell explains why people tend to believe false information and discusses strategies for correcting the public perception of misinformation. Southwell is a professor of Mass Communication at University of North Carolina at Chapel Hill.


June 9, 2016 in Guest Blogger: Michael Simkovic, Law in Cyberspace, Legal Profession, Of Academic Interest, Professional Advice, Science, Weblogs | Permalink

May 05, 2016

Do Clients Lose When Lawyers Work for a Fixed-Fee? (Michael Simkovic)

Lawyers traditionally bill a specified hourly rate for the time they spend working on a case. This ideally incentivizes lawyers to work hard and improve outcomes for their clients, and it provides clients transparency with respect to lawyer effort.

However, an hourly rate can reduce the predictability of costs for clients. Some clients worry that hourly rates might encourage inefficient over-work. As a result, some have shifted toward fixed-fee arrangements for their legal services, in which lawyers are paid a flat fee for completion of a task, regardless of how much time it takes to complete.

Preliminary results from empirical research that will be presented at this years’ American Law & Economics Association Conference suggest that a fixed-fee approach to compensating lawyers reduces lawyers’ efforts to assist clients and leads to worse outcomes for clients.

Two separate studies by two groups of researchers using similar research designs with different data sets both come to substantially the same conclusions. (Benjamin Schwall, High-Powered Attorney Incentives: A Look at the New Indigent Defense System in South Carolina and Amanda Y. Agan, Matthew Freedman & Emily Owens, Counsel Quality and Client Match Effects).

One potential obstacle in assessing the effects of different billing practices is reverse causation. Better lawyers may normally be able to bill by the hour because they are better and have more power to negotiate, not because billing by the hour makes them better.

The studies control for differences in lawyer quality by looking at the same lawyers (lawyer fixed effects) sometimes as court–appointed attorneys paid a flat fee and sometimes as attorneys billing by the hour. Schwall’s paper exploits changes in how South Carolina compensates its public defenders, while Agan, Freedman & Owen focus on random assignment of criminal defense counsel in Texas. The studies also attempt to control for differences in the type of case and defendant characteristics. The research designs for causal inference appear to be rigorous, and the results seem intuitive and plausible.

While the context of these studies is the criminal justice system, it would be surprising if the conclusions did not also hold true in civil litigation or in transactional practice. A lawyer on a fixed-fee is likely to be more willing to concede important points to bring a case or transaction to a speedy conclusion than one who can bill by the hour and be compensated for his or her extra efforts. Sophisticated clients may be better able to monitor their attorneys than indigent defendants and criminal courts, but clients probably cannot eliminate agency costs (If they could, an hourly rate would make at least as much sense as a fixed-fee).

Assuming the preliminary results of these studies hold, the incentive problems created by fixed fee arrangements may be an opportunity for shrewd business people or plaintiffs lawyers to target counterparties or defendants. If the businessperson pays his own lawyers by the hour to negotiate opposite lawyers on a fixed-fee, the reward could be contracts with lopsided terms in his favor. Plaintiffs’ lawyers may similarly expect civil defense lawyers on fixed-fee arrangements to advocate a swift settlement on terms relatively favorable to plaintiffs.

Lawyers are likely to know which clients use fixed fee arrangements because such clients often have an RFP process in which law firms bid for their work.


May 5, 2016 in Guest Blogger: Michael Simkovic, Legal Profession, Of Academic Interest, Professional Advice, Science | Permalink

April 30, 2016

Should professors give more feedback before the final exam? (Michael Simkovic)

New research from Dan Schwarcz and Dion Farganis at Minnesota argues that providing students with practice problems and exercises that are similar to final exams and giving individual feedback prior to the final examination can help improve grades for first year law students.

Schwarcz and Farganis tracked the performance of first year students who were randomly assigned to sections, and as a result took courses with professors who either provided exercises and individual feedback prior to the final examination, or who did not provide feedback.

When the students who studied under feedback professors and the students who studied under no-feedback professors took a separate required class together, the feedback students received higher grades after controlling for several factors that predict grades, such as LSAT scores, undergraduate GPA, gender, race, and country of birth. The increase in grades appears to be larger for students toward the bottom half of the distribution. The paper also attempts to control for variation in instructor ability using student evaluations of teacher clarity.

It’s an interesting paper, and part of a welcome trend toward assessing proposed pedagogical reform through quasi-experimental methods.

The interpretation of these results raises a number of questions which I hope the authors will address more thoroughly as they revise the paper and in future research.

For example, are the differences due to instructor effects rather than feedback effects? Students are randomly assigned to instructors who happen to voluntarily give pre-final exam feedback. These might be instructors who are more conscientious, dedicated, or skilled and who also happen to give pre-exam feedback. Requiring other instructors to give pre-exam feedback—or having the same instructors provide no pre-exam feedback—might not affect student performance.

Controlling for instructor ability based on teaching evaluations is not entirely convincing, even if students are ostensibly evaluating teacher clarity. There is not very strong evidence that teaching evaluations reflect how much students learn. An easier instructor who covers less substance might receive higher teaching evaluations across the board than a rigorous instructor who does more to prepare students for practice. Teaching evaluations might reflect friendliness or liveliness or attractiveness or factors that do not actually affect student learning outcomes but that have consumption value for students.  Indeed, high feedback professors might receive lower teaching evaluations for the same quality of teaching because they might make students work harder and because they might provide negative feedback to some students, leading students to retaliate on teaching evaluations.

These issues could be addressed in future research by asking the same instructor to teach two sections of the same class in different ways and measuring both long term student outcomes and teaching evaluations.

Another question is: are students simply learning how to take law school exams? Or are they actually learning the material better in a way that will provide long-term benefits, either in bar passage rates or in job performance? At the moment, the data is not sufficient to know one way or the other.

A final question is how much providing individualized feedback will cost in faculty time, and whether the putative benefits justify the costs.

It’s a great start, and I look forward to more work from these authors, and from others, using quasi-experimental designs to investigate pedagogical variations.


April 30, 2016 in Guest Blogger: Michael Simkovic, Legal Profession, Of Academic Interest, Professional Advice, Science | Permalink