Five intriguing papers I discovered this week II

As the second in a series, here are summaries of five interesting journal articles I read in the last week. All of these ones are new, although that may not always be the case. 1. "Very Long-Run Discount Rates" by Stefano Giglio, Matteo Maggiori and Johannes Stroebel

Giglio et al. use the difference between the prices of leasehold and freehold properties in the UK and Singapore to compute long-run discount rates. They find that over 100 years, the discount rate is 2.6%—whereas properties with 700-year or longer leases trade at par with freeholds. They point out that this 2.6% discount rate may have implications for climate change policy; the famous and influential Stern Review recommended using a 0% discount rate, which may justify much more extensive anti-CO2 measures now. Some slides explaining their findings are available here.

2. "Is the stock market just a side show? Evidence from a structural reform" by Murillo Campello, Rafael P. Ribas, and Albert Wang

Campello et al. look at a 2005 reform that, in a staggered 16-month basis and after a trial, allowed $400bn worth of Chinese equity, previously untradable, to be bought and sold. Using "wrinkles" in the roll out that provide quasi-experimental tests, they find that firm profitability, productivity, investment and value all improved substantially. "Policies that ease restrictions on [capital] markets may have positive effects" runs the final line of their conclusion—quelle surprise!

3. "Social security programs and retirement around the world: Disability insurance programs and retirement" by Courtney Coile, Kevin S. Milligan and David A. Wise

These three authors add to the burgeoning literature proving that those on the edge of retirement respond to incentives just like anyone else. This shouldn't really be a surprise, but the heavy flow of publications adding evidence in this direction suggests that maybe there was once a bizarre consensus in the other direction. Coile et al. show that delaying eligibility to pensions, increasing the stringency of disability insurance programs, and other welfare reforms for older people have "very large" effects on how much labour they decide to supply. Not exactly shocking, but certainly important in ageing societies.

4. "What Happens When Employers are Free to Discriminate? Evidence from the English Barclays Premier Fantasy Football League" by Alex Bryson and Arnaud Chevalier

In this nifty and quirky paper the authors try and isolate "taste-based" racial discrimination, by looking if fantasy football players pick footballers differently based on their race, controlling for "productivity" (i.e. their expected points tally). They find no evidence of taste-based discrimination here, suggesting that much of the apparent discrimination found in other studies (e.g. studies of fake CVs where different ethnicities see different acceptance rates even when they have similar qualifications and experience) could be statistical. That is, since employers cannot directly observe productivity (unlike in fantasy football), and since different ethnicities have different productivity distributions, certain ethnicities are on average less valuable to employers. Of course, it might be that people exercise taste-based discrimination as well when they have to interact regularly with the group/race/ethnicity in question—fantasy football is much more at arms length.

5. "The Role of Publicly Provided Electricity in Economic Development: The Experience of the Tennessee Valley Authority, 1929–1955" by Carl Kitchens (ungated)

The most fun kind of research to read is one that confirms a niggling view you've had for a while, but one that nevertheless overturns a happy consensus. The Tennessee Valley Authority is a classic example of "enlightened" central planning, targeting a hard-up area with massive coordinated infrastructural investment and widely believed to have delivered substantial benefits. But if these dams and systems were really such good investments wouldn't private companies have got around all the barriers to such an investment already? There are some cases where I suppose that sort of basic argument doesn't hold, but it's a pretty good first approach to any area, and it turns out the TVA is one of them. Kitchens newly-published paper finds "that the development of the TVA during its first 30 years did not cause manufacturing, retail sales per capita or electrification to grow any faster in areas receiving TVA electricity than in other areas in the Southeast."

Five intriguing papers I discovered this week

In what might become a recurring feature, I am going to summarise the findings of a few research papers, potentially of interest to ASI blog readers, that were either first released this week, first published this week, or first come upon by me this week.

1. Fernandes, D., Lynch, J. G., and Netemeyer, R. G., "Financial Literacy, Financial Education and Downstream Financial Behaviors" (Jan 2014)

This paper is a large meta-analysis of 168 other papers, which in turn refer to 201 different studies and experiments. They find that at least 99.9% of financial behaviour in life cannot be explained by differences in financial education, or conversely at most 0.1% of the difference in people's financial decision-making and choices is down to education interventions designed to improve their financial literacy. In the words of their abstract: "even large interventions with many hours of instruction have negligible effects on behavior 20 months or more from the time of intervention".

While other correlational studies appear to show some relationship between financial behaviour and educational schemes (i.e. one explaining more than 0.1% of the variance between individuals) they explain that this is only because those typically getting financial education already have various psychological traits associated with careful management of finances. They therefore suggest that big schemes designed to improve lifetime financial decisionmaking are futile and a waste of money; the best we can hope for is "just in time" interventions, perhaps at the point of financial transactions, that are more likely to be taken in and not forgotten.

2. Wang, M-T., Eccles, J. S., and Kenny, S., "Not Lack of Ability but More Choice: Individual and Gender Differences in Choice of Careers in Science, Technology, Engineering, and Mathematics" (May 2013)

In this paper the authors find that a substantial fraction of the male-female "gap" in STEM (Science, Technology, Engineering and Medicine) fields can be explained by the fact that women who are talented at maths tend to also have high verbal skills, skills that mathematically talented men are much more likely to lack. This means they have a wider range of choices available to them, and also possibly identify less closely with maths as part of their personality, and it is this choice not to pursue STEM further that drives the gap, rather than, for example, discrimination in the area or a perceived unfriendly atmosphere.

3. Liu, S., Huang, J. L., and Wang, M., "Effectiveness of Job Search Interventions: A Meta-Analytic Review" (Mar 2014)

Liu, Huang and Wang found, reviewing 47 different experiments testing if schemes "teaching job search skills, improving self-presentation, boosting self-efficacy, encouraging proactivity, promoting goal setting, and enlisting social support" could boost the unemployed's chances of getting a job. In fact, on average those in the treatment groups—i.e. those actually subject to the intervention, and not in the control group—were 2.67 times more likely to get a job. Since the studies all used randomness of quasi-randomness to assign treatment, this suggests, they say, that schemes that develop skills and self-motivation can be effective. However, the schemes were more likely to help the young than the old, the short-term unemployed than the long-term unemployed, and job-seekers with special needs, as compared to the population at large.

4. Karwowski, M., and Lebuda, I., "Digit ratio predicts eminence of Polish actor" (Jul 2014)

In a slightly surprising study, the two authors looked at 98 Polish actors, both male and female, and compared the ratio between their second and fourth digits on their hand (a measure of prenatal testosterone exposure) and their productivity and fame. For both men and women, even controlling for age, a higher ratio predicted more pre-eminence.

5. Aisen, A., and Veiga, F. J., "How Does Political Instability Affect Economic Growth?" (Jan 2011)

In a classic example where economists do extensive research to tell us what we already know, this IMF paper from 2011 shows us how bad political instability is for economic growth. Actually, the paper is a great one because it allows us to estimate the size of the impact of different political elements on instability and then the size of instability's own impact on economic aggregates.

Their findings are highly interesting: whereas primary school enrolment has a pitifully small impact on economic growth, and the impact of investment, economic freedom and the security of property rights comes out quite small, violence, political instability and cabinet changes have substantial negative effects, as does, surprisingly, population growth. And while the most productive regions in Europe are the most ethnically diverse, in this study ethnic homogeneity is very strongly associated with growth. Of course, the conclusions of the paper—that countries should address the root causes of political instability—are much easier said than done!