Mobile Phone Use and Cognitive Functions

In Environmental Health Perspectives, Milena Foerster, Arno Thielens, Wout Joseph, Marloes Eeftens, and Martin Röösli report findings that suggest potential adverse effects of adolescents’ mobile phone use on cognitive functions.

We found preliminary evidence suggesting that RF-EMF may affect brain functions such as figural memory in regions that are most exposed during mobile phone use. Our findings do not provide conclusive evidence of causal effects and should be interpreted with caution until confirmed in other populations. Associations with media use parameters with low RF-EMF exposures did not provide clear or consistent support of effects of media use unrelated to RF-EMF (with the possible exception of consistent positive associations between verbal memory and data traffic duration). It is not yet clear which brain processes could be potentially affected and what biophysical mechanism may play a role. Potential long-term risk can be minimized by avoiding high brain-exposure situations as occurs when using a mobile phone with maximum power close to the ear because of, for example, bad network quality.

Financial Sanctions, the USD, and the EUR

On Moneyness, JP Koning discusses the ability or not of the U.S. treasury to enforce financial sanctions overseas. Focusing on the Iran sanctions that ran from 2010 to 2015 (with strong international support) and are scheduled to be reimposed soon (without such support) Koning compares the U.S. sanctions regime to an exclusivity agreement that a large retailer imposes on a manufacturer.

Foreign banks in places like Europe were free to continue providing transactions services to Iran, but if they did so they would not be able to maintain correspondent accounts at U.S. banks. To ensure these rules were enforced, U.S. banks were to be fined and U.S. bank executives incarcerated if found guilty of providing accounts to offenders. Fearful bank executives were very quick to comply by carefully vetting those that they offered correspondent banking services to.

Having a U.S. correspondent account is very important to a non-US bank. If a European bank has a corporate customer who wants to make a U.S. dollar payment, the bank’s correspondent relationship with a U.S. bank allows it to effect that payment. Since the revenues from U.S. dollar payments far exceeds revenues from providing Iranian agencies and corporations with payments services, a typical European bank would have had no choice but to abandon Iran in order to keep its U.S. correspondent account.

But what would happen if Iran were to invoice in EUR rather than USD and make payments using an account at a European bank, bank X say, without direct links to the U.S. and no U.S. correspondent account? The answer to that question depends on whether the U.S. treasury would be prepared to sanction a third financial institution, bank Y say, that collaborates with bank X (or a business partner of bank X) and relies on a U.S. correspondent account. In the most extreme scenario bank Y would be the European Central Bank.

One scheme would be to set up a single sanctions-remote bank that conducts all Iranian business. To defang the U.S. Treasury’s threat “do business with us, or them, but not both!”, this bank should not be dependent on U.S. dollar business. Without a U.S. correspondent, the Treasury’s threat to disconnect it from the correspondent network packs no punch. … Crude oil buyers from all over Europe could have their banks wire payments to [bank X’s] account via the ECB’s large value payments sytem, Target2. [Bank X] could also open accounts for companies in India, China, and elsewhere who want to buy Iranian crude oil with euros.

… There is also the extreme possibility that the U.S. would impose travel bans on the ECB itself, in an effort to force ECB officials to remove [bank X] from Target2. Here is one such threat: “Treasury this week designated the governor of Iran’s central bank—does any European country think Treasury can’t designate their own central bank governor too?” Look, the idea of preventing Mario Draghi from travelling to the U.S., or blocking his U.S. assets, sounds so unhinged that it’s not even worth entertaining.

The reason Iran and its trading partners were not able to break sanctions between 2010 and 2015, according to Koning, is that Europe (specifically the German chancellor Angela Merkel) supported the U.S. administration and imposed its own sanctions on bank X, cutting it off the SWIFT and Target2 networks.

Bullshit Jobs and Corporate Correctness

In the New Yorker, Nathan Heller reviews David Graeber’s “Bullshit Jobs.”

In the course of Graeber’s diagnosis, he inaugurates five phyla of bullshit work. “Flunkies,” he says, are those paid to hang around and make their superiors feel important: doormen, useless assistants, receptionists with silent phones, and so on. “Goons” are gratuitous or arms-race muscle; Graeber points to Oxford University’s P.R. staff, whose task appears to be to convince the public that Oxford is a good school. “Duct tapers” are hired to patch or bridge major flaws that their bosses are too lazy or inept to fix systemically. (This is the woman at the airline desk whose duty is to assuage angry passengers when bags don’t arrive.) “Box tickers” go through various motions, often using paperwork or serious-looking reports, to suggest that things are happening when things aren’t. (Hannibal is a box ticker.) Last are “taskmasters,” divided into two subtypes: unnecessary superiors, who manage people who don’t need management, and bullshit generators, whose job is to create and assign more bullshit for others. …

Graeber comes to believe that the governing logic for such expansion isn’t efficiency but something nearer to feudalism: a complex tangle of economics, organizational politics, tithes, and redistributions, which is motivated by the will to competitive status and local power.

My view is that what Graeber describes is a reflection of growing “corporate correctness,” the tendency

  • to structure and regulate everything, and often in an incompetent way;
  • to focus on appearance rather than content (think of power point);
  • to avoid responsibility by forming commissions and commissioning reports; and
  • to replace common sense by a mentality of box ticking, buzz wording, and bull shitting.

Of course, corporate correctness transcends the corporate sector. Universities and the public sector are leading the way.

Redenomination Risk in the Eurozone

In a CEPR discussion paper Christian Bayer, Chi Kim, Alexander Kriwoluzky analyze redenomination risk during the European debt crisis and how the European Central Bank’s interventions affected this risk. They conclude that the risk fell in the case of Italy but increased for France and Germany.

From the abstract:

… first estimate daily default-risk-free yield curves for French, German, and Italian bonds that can be redenominated and for bonds that cannot. Then, we extract the compensation for redenomination risk from the yield spreads between these two types of bonds. Redenomination risk primarily shows up at the short end of yield curves. At the height of the euro crisis, spreads between first-year yields were close to 7% for Italy and up to -2% for Germany. The ECB’s interventions designed to reduce breakup risk successfully did so for Italy, but increased it for France and Germany.

See also this earlier blogpost.

Marx was Right—Partly

According to René Scheu in the NZZ.

Die zehn «Massregeln» für die «fortgeschrittensten Länder», in die das «Kommunistische Manifest» mündet, lesen sich aus heutiger Sicht wie ein sozialdemokratisches Programm, dem auch viele softbürgerliche Politiker sogleich vorbehaltlos zustimmen würden. Starke Progressivsteuer, Geldmonopol der Nationalbank, Zentralisation des Transportwesens, nationale Industriepolitik, Verstaatlichung des Bauernstandes und unentgeltliche Erziehung aller Kinder gehören längst zu den Errungenschaften avancierter Wohlfahrtsstaaten – damit sind wohlgemerkt bereits sechs der zehn Punkte erfüllt….

Marxens Kritik zielt nicht auf den Unternehmer und Eigentümer als solchen, sondern auf den Bourgeois, der auf der faulen Haut liegt und auf Kosten anderer lebt. …

Der Verfasser des «Manifests» ist kein Moralist, sondern ein geradezu passionierter Ökonomist der ersten Stunde.

And according to The Economist:

  • Modern “capitalism” often reduces to rent seeking: The Economist mentions “corporate bureaucrats”, “management consultants”, “professional board members”, “retired politicians (who spend their twilight years sponging off firms they once regulated)”.
  • It is global (WEF).
  • It has a tendency towards monopoly (Google, Facebook, …).
  • It yields an army of casual workers (gig economy).
  • But Marx overestimated poverty and underestimated reform.

Isaiah Berlin: Karl Marx and his Environment.

CBDC-Skepticism-Skepticism

On their blog, Stephen Cecchetti and Kermit Schoenholtz voice doubts regarding the usefulness of universal central bank digital currency (U-CBDC). They argue:

… in an effort to retain their deposit base, commercial banks would surely raise the interest rate they offer to their customers relative to the rate on U-CBDC. … the introduction of U-CBDC would cause a substantial fraction of deposits to shift to the central bank, with the remainder prone to exit in a period of financial stress.

… if the Federal Reserve were to issue U-CBDC, we expect that this would not only hollow out the U.S. commercial banking system, but also destabilize the financial system in a range of countries.

… what would the central bank become? As its U-CBDC liabilities grow, its assets will need to expand as well. And, since commercial banking will have shrunk, so will the sources of private credit. At this point, the central bank turns into a commercial lender. It will become the state bank. In the allocation of funds, it will substitute increasingly for the discipline of private suppliers and markets, inviting political interference in the allocation of capital, slowing economic growth.

The problem with this argument is twofold: First, it disregards the possibility of liability substitution: Deposits may be replaced by other forms of bank debt. Second, bank balance sheet length is equated with lending capacity. But empirically, one is far from a perfect predictor of the other. For example, some countries rely much more heavily on bank credit than others, without obvious implications for intermediation and investment.

… we are compelled to ask what problem it is that U-CBDC is designed to solve. There seem to be three possibilities: the inability of monetary policymakers to set interest rates much below zero; the fact that paper currency is a vehicle for criminality; and the need to broaden financial access. On the first, we currently see little political support for interest rates that go meaningfully below zero. … As for criminal use of paper currency, as we argued in a recent post, there is a strong case for eliminating anything bigger than the equivalent of a U.S. 20-dollar note, but doing so does not imply a need for U-CBDC. Finally, there is financial access. Here, we see technology as providing solutions outside of the central bank [e.g., India’s program of providing costless, no-frills accounts].

Indeed, none of these arguments makes a convincing case for CBDC (especially since only the first one directly relates to the monetary system). But there are two more convincing arguments. First, it is preposterous to have governments prohibit citizens from using cash—the legal tender—for large transactions, and to force them into using privately issued money instead. Opening the central bank’s balance sheet to the public is a more liberal approach than restricting access to financial institutions.

Second, private money creation puts the central bank at a second mover disadvantage, effectively forcing it to serve as lender of last resort during liquidity crises or even as provider of bailout funds. Since the central bank is obliged to safeguard the payment system it cannot escape this disadvantage; regulatory measures—to the extent that they work and do not cause more harm—may alleviate moral hazard but cannot solve the time consistency problem completely. The more payments are conducted using CBDC the less can the banking sector and its customers dictate monetary policy.

To conclude, we see very little upside for central banks to issue retail digital currency. Instead, we see an enormous risk to the commercial banking system and political challenges for central banks. In the end, we wonder: would capitalism survive the introduction of U-CBDC? It may, but we are not at all sure.

As argued above, threats to capitalism also lurk in other corners.

Does CBDC Increase Run Risk?

Central bankers often argue that CBDC would increase the risk of bank runs. On his blog, JP Koning rejects this notion. After all, he retorts, during a confidence crisis bank customers would no longer have to queue to withdraw cash; lender of last resort support would be provided much more quickly; and “large” cash holders would continue to shift funds into treasury bills, not into CBDC.

Koning writes:

The general criticism here is that during a crisis, households and businesses will desperately shift their deposits into the ultimate risk-free asset: central bank money. Presumably when deposits were only redeemable in banknotes (as is currently the case) and one had to trudge to an ATM to get them, this afforded people time for sober contemplation, thus rendering runs less damaging. But if small depositors can withdraw money from their accounts while in their pajamas, this makes banks more susceptible to sudden shifts in sentiment, goes the Carney critique.

I don’t buy it. … even in jurisdictions without deposit insurance, I still don’t think that shifts into digital currency in times of stress would exceed shifts into banknotes. A bank will quickly run out of banknotes during a panic as it meets client redemption requests, and will have to make arrangements with the central bank to get more cash. Thanks to the logistics of shipping cash, refilling the ATMs and tellers will take time. In the meantime a highly visible lineup will grow in front of the bank, exacerbating the original panic. Now imagine a world with digital currency. In the event of a panic, customer redemption requests will be instantaneously granted by the bank facing the run. But that same speed also works in favor of the bank, since a request to the central bank for a top-up of digital currency could be filled in just a few seconds. Since all depositors gets what they want when they want, no lineups are created. And so the viral nature of the panic is reduced.

But what about large depositors like corporations and the rich … ? During a crisis, won’t these sophisticated actors be more likely to pull uninsured funds from a bank, which have a small possibility of failure, and put them into risk-free central bank digital currency?

I disagree. In a traditional economy where banknotes circulate, CFOs and the rich don’t generally flee into paper money during a crisis, but into short-term t-bills. Paper money and t-bills are government-issued and thus have the same risk profile, t-bills having the advantage of paying positive interest whereas banknotes are barren. The rush out of deposits into t-bills is a digital one, since it only requires a few clicks of the button to effect. Likewise, in an economy where digital currency circulates, CFOs are unlikely to convert deposits into barren digital currency during stress, but will shift into t-bills. The upshot is that banks are not more susceptible to large deposit shifts thanks to the introduction of digital currency—they always were susceptible to digital bank runs thanks to the presence of short-term government debt.

Of course, depending on the type of CBDC, central banks might also choose to pay negative interest on CBDC in order to depress demand for it.

“Fiscal and Monetary Policies”

The Journal of Economic Dynamics and Control has published a special issue with the papers of the conference on “Fiscal and Monetary Policies” that the Study Center Gerzensee co-organized with the JEDC, the St. Louis Fed, the University of Bern, and the Swiss National Bank.

This earlier post contains a link to the conference program.

Monetary Policy and the Wealth Distribution

In a Staff Working Paper, the Bank of England’s Philip Bunn, Alice Pugh, and Chris Yeates discuss how monetary policy easing following the financial crisis affected income and wealth of different age groups.

The authors analyze survey panel data (ONS Wealth and Assets Survey) on households’ characteristics and balance sheet positions. They argue that

the overall effect of monetary policy on standard relative measures of income and wealth inequality has been small. Given the pre-existing disparities in income and wealth, we estimate that the impact on each household varied substantially across the income and wealth distributions in cash terms, but in percentage terms the effects were broadly similar. We estimate that households around retirement age gained the most from the support to wealth, but that support to incomes disproportionately benefited the young. Overall, our results illustrate the importance of taking a broad-based approach to studying the distributional impacts of monetary policy and of considering channels jointly rather than in isolation.

Quill Cloud

BIS report on CBDC

A BIS report submitted by the Committee on Payments and Market Infrastructures and the Markets Committee discusses potential implications of the introduction of central bank digital currency for payments, monetary policy, and financial stability.

From the executive summary

… CBDC is potentially a new form of digital central bank money that can be distinguished from reserves or settlement balances held by commercial banks at central banks. There are various design choices for a CBDC, including: access (widely vs restricted); degree of anonymity (ranging from complete to none); operational availability (ranging from current opening hours to 24 hours a day and seven days a week); and interest bearing characteristics (yes or no).

… Two main CBDC variants are … a wholesale and a general purpose one. The wholesale variant would limit access to a predefined group of users, while the general purpose one would be widely accessible.

… Traditionally, central banks have … This approach has, in general, served the public and the financial system well, setting a high bar for changing the current monetary and financial structure.

Wholesale CBDCs, combined with the use of distributed ledger technology, may enhance settlement efficiency for transactions involving securities and derivatives. Currently proposed implementations for wholesale payments – designed to comply with existing central bank system requirements relating to capacity, efficiency and robustness – look broadly similar to, and not clearly superior to, existing infrastructures. …

In part because cash is rapidly disappearing in their jurisdiction, some central banks are analysing a CBDC that could be made widely available to the general public and serve as an alternative safe, robust and convenient payment instrument. … analysing whether these goals could also be achieved by other means is advisable, as CBDCs raise important questions and challenges … the benefits of a widely accessible CBDC may be limited if fast (even instant) and efficient private retail payment products are already in place or in development.

… a central bank introducing such a CBDC would have to ensure the fulfilment of anti-money laundering and counter terrorism financing (AML/CFT) requirements, as well as satisfy the public policy requirements of other supervisory and tax regimes. … in some jurisdictions central banks may lack the legal authority to issue a CBDC … compared with the current situation, a non-anonymous CBDC could allow for digital records and traces, which could improve the application of rules aimed at AML/CFT.

Issuance of a CBDC would probably not alter the basic mechanics of monetary policy implementation, including central banks’ use of open market operations. … However, if flows into CBDC were to become large and not associated with offsetting declines in physical banknotes, as could be the case in times of financial stress, challenges could arise (such as a need to broaden the assets that the central bank can hold or take on as collateral).

CBDC could enrich the options offered by the central bank’s monetary policy toolkit, eg by allowing for a strengthening of pass-through of policy rate changes to other interest rates or addressing the zero lower bound (or the even lower, effective bound) on interest rates. … other more conventional tools and policies can to some extent achieve similar outcomes without introducing new risks and challenges (such as implementing negative interest rates on public holdings of a general purpose CBDC). And some of these gains might not arise without discontinuing higher denomination banknotes …

Implications are more pronounced for monetary policy transmission and financial markets, especially if a CBDC was to be designed as, or de facto became, an attractive asset. … could function as a safe asset comparable in nature to short maturity government bills. A general purpose variant could compete with guaranteed bank deposits, with implications for the pricing and composition of banks’ funding.

… A general purpose CBDC could give rise to higher instability of commercial bank deposit funding. Even if designed primarily with payment purposes in mind, in periods of stress a flight towards the central bank may occur on a fast and large scale, challenging commercial banks and the central bank to manage such situations. Introducing a CBDC could result in a wider presence of central banks in financial systems. This, in turn, could mean a greater role for central banks in allocating economic resources … It could move central banks into uncharted territory and could also lead to greater political interference.

For currencies that are widely used in cross-border transactions, all the considerations outlined above would apply with added force, especially during times of generalised flight to safety. …

… Further research …

Saga—A Global CBDC?

In the FT, Martin Arnold reports about plans to launch “Saga,” a reserves-backed krypto currency, maybe the closest substitute yet to central bank digital currency.

It is being launched by a Swiss foundation with an advisory board featuring Jacob Frenkel, … Myron Scholes, … and Dan Galai, co-creator of the Vix volatility index. The currency aims to avoid the wild price swings of many cryptocurrencies by tethering itself to reserves deposited in a basket of fiat currencies at commercial banks. Holders of Saga will be able to claim their money back by cashing in the cryptocurrency.

Saga also aims to avoid the anonymity of bitcoin that raises financial crime concerns with regulators and bankers. It will require owners to pass anti-money laundering checks and allow national authorities to check the identity of a Saga holder when required.

Deposits will be made in the IMF’s special drawing right basket of currencies, which is heavily weighted in US dollars.

Reserves for All come into sight.

Update (30 March): From the white paper:

Saga … deploys a reserve anchoring algorithm, serving to stabilise the currency in terms of leading state-issued currencies. As Saga gains trust, its reserve ratio will decrease in favour of an independent establishment of value.

???

Truata

In the FT, Mehreen Khan and Aliya Ram report that MasterCard and IBM plan to create a “data trust” to allow businesses with EU customers to meet the strict General Data Protection Regulation (GDPR) provisions that come into effect by the end of May. “Truata” will be based in Dublin.

The independent company, called Truata, will manage, anonymise and analyse vast amounts of personal information held by companies such as travel agents and insurers in a way that is compliant under the EU’s General Data Protection Regulation (GDPR). …

Truata will strip data sets of key details such as a person’s name, contact details or email address so they cannot be re-identified from the information. It will also offer analytical services to allow a business to extract valuable information from the data.

“Für elektronisches Zentralbankgeld (In Favor of Central Bank Digital Currency),” NZZ, 2018

NZZ, March 15, 2018. PDF. Ökonomenstimme, March 19, 2018. HTML

  • CBDC is not the same as krypto currencies.
  • The case against CBDC is not at all obvious; CBDC has costs and benefits.
  • Switzerland should not dismiss CBDC too quickly.
  • (The title of the article is misleading, it is not mine. I argued for openness in the discussion rather than for adoption.)

U.S. Tax Enforcement and Offshore Accounts

In an NBER working paper, Niels Johannesen, Patrick Langetieg, Daniel Reck, Max Risch, and Joel Slemrod discuss the effects of recent U.S. tax enforcement initiatives on tax compliance. They offer background information about U.S. initiatives since 2009 and conclude, based on administrative microdata, that

[e]nforcement caused approximately 60,000 individuals to disclose offshore accounts with a combined value of around $120 billion. Most disclosures happened outside offshore voluntary disclosure programs by individuals who never admitted prior noncompliance. The disclosed accounts were concentrated in countries whose institutions facilitate tax evasion. The enforcement-driven disclosures increased annual reported capital income by $2.5-$4 billion corresponding to $0.7-$1.0 billion in additional tax revenue.

“Financial Policy,” CEPR, 2018

CEPR Discussion Paper 12755, February 2018. PDF. (Personal copy.)

This paper reviews theoretical results on financial policy. We use basic accounting identities to illustrate relations between gross assets and liabilities, net debt positions and the appropriation of (primary) budget surplus funds. We then discuss Ramsey policies, answering the question how a committed government may use financial instruments to pursue its objectives. Finally, we discuss additional roles for financial policy that arise as a consequence of political frictions, in particular lack of commitment.

“Fiscal and Monetary Policies,” Bern, Spring 2018

MA course at the University of Bern.

The classes follow chapters 11–13 in this text (updated: April 5) and build on the material covered in chapters 1–5. Uni Bern’s official course page. The course TA is Christian Myohl.

Main contents:

  1. Concepts.
  2. RA model with government spending and taxes.
  3. Government debt in RA model.
  4. Government debt and social security in OLG model.
  5. Neutrality results.
  6. Consolidated government budget constraint.
  7. Fiscal effects on inflation. Game of chicken.
  8. FTPL. Active and passive policies.
  9. Primal and dual approach.
  10. Tax smoothing.
  11. Time consistent policy.