About

Professor Tarek Hassan is a faculty member in the Department of Economics at Boston University. His research focuses on international finance, macro-finance, and social factors in economic growth. His recent work studies the effects of uncertainty on firm behavior and the allocation of capital across countries, as well as the impact of social structure, historical migration, and ethnic diversity on economic growth and foreign direct investment. His research has been published in top journals such as the American Economic Review, the Quarterly Journal of Economics, and the Journal of Finance. He is also a research fellow of the National Bureau of Economic Research and the Center for Economic Policy Research.

Research topics

• Economics
• Business
• Medicine
• Demographic economics
• Microeconomics
• Monetary economics
• Virology
• Environmental science
• International trade

Selected publications

• The Skill Premium in Times of Rapid Technological Change

  National Bureau of Economic Research · 2026-03-01

  reportOpen access1st authorCorresponding

  This paper shows that the pace of technology creation is a key driver of the skill premium.It develops a model in which skilled workers have a comparative advantage in learning new technologies.As technologies age, they become standardized and accessible to other workers.The skill premium is determined by the interplay between the pace of technology creation and standardization.A rapid pace of technology creation leads to a sustained increase in the skill premium.We calibrate the model using novel text-based data on new technologies and their changing demand for skills as they age.These data show that new technologies are initially skill intensive but become less so as they age.The data also point to an increased pace of new technology creation starting in the 1970s and tapering off in the 2000s.In response to this rapid pace of technology creation, the model generates a 32 percent increase in the college premium, which begins to reverse in the 2010s.Our framework also explains why the college premium is higher in dense cities, why its increase was mainly urban, and why it rose first for young workers and later for older workers.

  PublisherDOI

• Latanoprost/timolol fixed-dose combination: two decades of efficacy and safety in glaucoma management

  BMC Ophthalmology · 2026-01-08

  articleOpen accessSenior author

  Topical prostaglandin analogs (PGAs) are recommended as first-line therapy for the treatment of glaucoma. However, many patients do not achieve adequate IOP control with monotherapy and require additional agents. Combination therapy involving the use of two individual eye drops makes the medication instillation regimen complex, often leading to reduced adherence to treatment. Lack of adherence leads to poor outcomes. Fixed combinations of glaucoma pharmacotherapies can simplify the dosing regimen, increase adherence, and improve the quality of life (QoL). Latanoprost 0.005% and timolol maleate 0.5% fixed combination (LTFC) was the first PGA/βeta-blocker (BB) combination, launched in the European Union in 2001, and continues to be widely used. Studies have reported improved QoL and patient satisfaction with LTFC compared to monotherapy or other combination therapies. A high level of satisfaction with LTFC concerning tolerability and good adherence has also been reported. In several studies comparing LTFC with other monotherapies, LTFC consistently showed a higher reduction in intraocular pressure (IOP). Some studies have also shown that LTFC leads to a greater reduction in IOP than other combination therapies. Thus, LTFC can be useful in the management of patients with inadequate IOP control on monotherapy.

  PublisherOA PDFDOI

• Immigration, Innovation, and Growth

  American Economic Review · 2026-02-27 · 5 citations

  preprintOpen accessSenior author

  We propose a novel identification strategy to isolate exogenous immigration shocks across US counties, by interacting quasi-random variations in the composition of ancestry across counties with the contemporaneous inflow of migrants from different countries. We show a positive causal impact of immigration on local innovation and wages at the five-year horizon. The positive dynamic impact of immigration on innovation and wages dominates the short-run negative impact of increased labor supply. A structural estimation of a model of endogenous growth and migrations suggests the increased immigration to the United States since 1965 may have increased innovation and wages by 5 percent. (JEL J15, J22, J31, J61, O31, R11, R23)

  PublisherOA PDFDOI

• First detection of VHE gamma-ray signal from the FSRQ TON 0599

  arXiv (Cornell University) · 2026-01-07

  preprintOpen access

  TON\,0599 (z=0.7247) belongs to the few flat spectrum radio quasars (FSRQs) detected in the very high energy (VHE, $E > 100$\,GeV) gamma-ray band. Its redshift makes it currently one of the farthest VHE gamma-ray sources. It was detected for the first time with the MAGIC telescopes on 2017 December 15, and observed until December 29. The flux reached a maximum of about 50 per cent of the Crab Nebula flux above 80 GeV on the second night of observation, after which we witnessed a gradual decrease of the flux. The VHE gamma-ray spectrum connects smoothly to the one in the high energy ($E > 100$\,MeV) band obtained from simultaneous observations with {\textit Fermi}-LAT. It features a cut-off at energies around 50\,GeV, indicating the location of the gamma-ray emission zone beyond the broad line region. In addition, we were able to follow the spectral evolution during the fading phase of the flare. Multiwavelength analysis based on observations in optical, near-infrared, and radio bands acquired by the Whole Earth Blazar Telescope (WEBT) Collaboration from November to March, as well as observations in X-ray and optical--UV bands with instruments on board the \textit{Swift} satellite, shows strong correlation between different bands. We model the broadband emission with a simple one-zone leptonic model, where the high-energy peak is predominantly produced by external Compton (EC) scattering of photons from the dusty torus.

  PublisherDOI

• The Skill Premium in Times of Rapid Technological Change

  SSRN Electronic Journal · 2026-01-01

  preprintOpen access1st authorCorresponding
  PublisherDOI

• The Role of Applying Some Logistical Services on The Efficiency of The Food Subsidy System in Egypt

  Damietta Journal of Agricultural Sciences · 2025-11-25

  articleSenior author

  The Egyptian food support system is one of pillars policies aimed at ensuring food security for low-income groups, which still face challenges of low logistical efficiency in areas of storage, packaging, and distribution. The research aims to measure role applying logistics services on efficiency of supply system’s performance. It relied: Reliability Analysis, Cronbach's Alpha, Correlation Factor, Liker's-scale, Multiple Regression, (VIF), as well as Factor Analysis. Through field data from simple random sample, and secondary data, The important results: (1) Average food support about 15.21 billion pounds for period (02/2003-12/2013), representing 24.11% of total support, with coefficient variation 55.84%.It increased to 70.19 billion pounds after implementing digital transformation for period (13/2014-23/2024), representing 22.9% of support, with C.V. 42.50%. (2) Digital transformation of the food support system has an impact on increasing the efficiency of data management and enhancing spatial and social justice in access support (3) Strengthening logistics aspects of packaging fields and developing technical infrastructure (4) Arelative increase 1% for development packaging, storage and continuous monitoring systems, motivating operators to improve service, and satisfaction with the digital transformation system will lead to relative and statistically significant increase about 0.081%, 0.078%, 0.075%, 0.072%, respectively, for efficiency support system. (5) Quality management explains about 36.2% of total variance, and is saturated by items service quality, citizen satisfaction, and availability storage standards of appropriate quality, while time management explain 30.1% of total variance, and efficiency safety of food products explains 13.5% of variance, and highlights guarantee that goods reach their beneficiaries without loss.

  PublisherDOI

• The Effect of Economic Factors on Competitive Advantage of Consumer Goods Manufacturing Companies in Nigeria

  Mimbar Ilmu · 2025-04-25

  articleOpen access

  Consumer goods manufacturing industry owners and managers find it challenging and difficult in constantly and continuously achieving targeted business performance occasioned by their inability to achieve competitive advantage resulting from global economic activities. This study investigates the examining the effect of economic factors on competitive advantage of consumer goods manufacturing companies in Nigeria. The study adopted cross sectional survey research design. A sample size of 568 was used. The primary data was collected through administering copies of questionnaire to the target respondents. A self-developed structured and validated questionnaire was used for data collection. The reliability test yielded Cronbach’s alpha for the constructs ranging from 0.745 to 0.892. The response rate was 87.7%. Data were analyzed using inferential statistics (Multiple regression analysis). Findings revealed that The results revealed that interest rate (β = 0.126, t = 2.143, p = 0.033), importation policy (β = 0.288, t = 3.996, p = 0.000), infrastructural facility (β = 0.285, t = 4.065, p = 0.000) and exchange rate (β = 0.313, t = 4.357, p = 0.000) have positive and significant effects on competitive advantage of the selected quoted consumer goods companies in Nigeria. It was recommended that Managers or consumer goods owners should factor in economic policies on importation policy, inflation rate, infrastructural facility, interest rate and exchange rates so as to proactively determine the trend effect of economic policies on competitive advantage of selected quoted consumer goods companies in Nigeria.

  PublisherOA PDFDOI

• Next-generation pharmaceuticals: the rise of sildenafil citrate ODF for the treatment of men with erectile dysfunction

  Therapeutic Delivery · 2025-01-12 · 6 citations

  reviewOpen accessSenior authorCorresponding

  Orodispersible film (ODF) is one of the novel formulations that disintegrate rapidly in the mouth without the requisite for water compared to other conventional oral solid dosage formulations. This delivery system serves as a convenient mode of administration, especially in patients who have dysphagia and fluid restriction, being beneficial to pediatric, geriatric, and bedridden patients. A novel sildenafil ODF containing sildenafil citrate is formulated to be used in patients with erectile dysfunction (ED). This review discusses the advantages of ODF in improving compliance and satisfaction in these patients and describes the manufacturing techniques, evaluation tests, bioequivalence, and stability studies of sildenafil ODF. This formulation offers unique benefit to patients with ED by improving their acceptance and compliance and respecting their privacy and the need for a discreet treatment. Moreover, the comparison of pharmacokinetic parameters between the sildenafil ODF administered with and without water and the conventional film-coated tablet were similar. It also demonstrated reliable performance that yielded a consistent product, meeting all specifications at release and after three weeks of storage under stressed conditions (60°C). Sildenafil ODF warrants improved ease of intake, taste, portability, storage, and compliance among ED patients, making it the potential most preferred formulation and drug of choice.

  PublisherOA PDFDOI

• The Canary and the Bone: A Darwinian Lecture on Erectile Dysfunction

  Trends in andrology and sexual medicine · 2025-09-30 · 3 citations

  book-chapterOpen access1st authorCorresponding

  Erectile dysfunction (ED) is one of the most common impairments in sexual function seen in males. The pathogenesis of ED is commonly attributed to a complex interaction of biological, psychological and social factors. The high prevalence of ED and its impact on male sexual function require further explanation from an evolutionary perspective, as one might expect the forces of natural selection to reduce ED frequency over generations. This chapter explores the Darwinian perspective of ED and highlights the importance of sexual selection and the loss of the penile bone, the baculum, as contributing to the presence and persistence of ED in human males. This chapter unravels the complexity of the evolutionary basis of ED, examining the hypothesis that the loss of baculum has generated ED, which serves, like the canary in the coalmine, as an early marker of general health. Thus, the inability to achieve and/or maintain an erection adequate for the fulfillment of sexual intercourse might act as a “fuse” for species preservation. Similarly to how fuses burn in a car to prevent more extensive damage, ED would develop in men who harbor other concurrent conditions, or exposed to accumulation of several risk factors of various origin, as a measure to prevent “damage” to the species as a whole. This mechanism would favor reproduction of healthier men, while at the same time reducing the risk of transmission of harmful genes to subsequent generations. The implications of this hypothesis are explored, as well as the importance of modern medicines targeting the phosphodiesterase 5 enzyme in overcoming the evolutionary handicap of ED.

  PublisherOA PDFDOI

• Trade War and the Dollar Anchor

  SSRN Electronic Journal · 2025-01-01

  preprintOpen access1st authorCorresponding
  PublisherDOI

Frequent coauthors

• Ahmed Tahoun

  316 shared

• Thomas Chaney

  207 shared

• Josh Lerner

  Entrepreneurial Ecosystems

  164 shared

• Konrad Burchardi

  Stockholm University

  159 shared

• Nicholas Bloom

  Stanford University

  158 shared

• Aakash Kalyani

  153 shared

• Stephen Terry

  147 shared

• Lisa Tarquinio

  University of Chicago

  147 shared

Education

• Ph.D.

  Harvard University