My present research projects include a monograph on the history of hypothetical syllogistic, a study on the logic of vagueness and higher-order vagueness, as well as further explorations of Stoic logic and of its relations to Frege and 19th‒20th century logic. I also retain an interest in determinism, freedom, and responsibility and in MAP.

My abiding interest is in the history of Late Antiquity (from the mid-third century A.D. to the mid-eighth) in both Europe and the Mediterranean. Within that I work on two distinct areas: the Roman Empire under the successors of Constantine (from 337 to 366 A.D.), and the writing and circulation of letters and letter collections in the early-medieval West (from c.400 to 700).

My research lies at the intersection of economic history and international economics. In particular, I’ve done a lot of work on the history of globalization and deglobalization, and am still working on these themes. I’m currently working on interwar trade and trade policy, and am also interested in the relationships between trade and war. Other current projects include a history of economic growth in the 20th century, and quantifying the importance of coal during the industrial revolution.

I work mostly on topics concerned with the operation of markets. This includes research on how firms chooses their prices, including issues to do with offering discounts when consumers buy multiple units or products, or when consumers care about how many other customers also choose to buy from the firm, and how consumers search for products and prices. Particular markets studied include telecommunication and media, scientific publishing, markets for "market information", and markets where some consumers can be "pressured" into buying.

Chris Frith completed his series of seminars on metacognition and is currently collaborating on writing an account of explicit metacognition and communication. He published articles on volition, on the we-mode, and on schizophrenia, and gave lectures at The Pontifical Academy of Sciences, at the Hôpital de la Salpêtrière, and at Harvard University.

My current research is in the philosophy of language. I want to reconsider the general relationship between truth and meaning, a central theme of philosophy from the 1960s until the 1980s, but one which has fallen into abeyance since. My approach is to explicate meaning in terms of its connections with belief and action and then to explain truth in terms of meaning (thereby reversing the predominant order of explanation). This approach casts new light on such diverse topics as the semantic paradoxes and the special characteristics of mathematical discourse.

My main research interests lie in the application of contemporary sociolinguistics to the ancient world and the integration of epigraphy, linguistics and archaeology to write socio-cultural history. My ERC-funded project LatinNow on life and languages of Roman western Europe was completed in 2023 https://latinnow.eu/, the data can be found here https://gis.latinnow.eu/ and the trilogy of Open Access books downloaded via the OUP website: Latinization, Local Languages and Literacies in the Roman West (ed. with Anna Willi), Languages and Communities in the Late-Roman and Post-Imperial Western Provinces (ed. with George Woudhuysen), Social Factors in the Latinization of the Roman West. I currently work on projects on Gaulish inscriptions (ANR), technology for reading ancient texts (SSHRC), writing tablets from Britannia (British Academy), and Roman Inscriptions of Britain in Schools (UKRI) https://romaninscriptionsofbritain.org/. I have published the following books with Cambridge University Press: The Language of Letters: Bilingual Roman Epistolography from Cicero to Fronto (with Olivia Elder), Southern Gaul and the Mediterranean: Multilingualism and Multiple Identities in the Iron Age and Roman Periods and (co-edited with Patrick James) Multilingualism in the Graeco-Roman Worlds. I have also published a born digital, open access eBook, Manual of Roman Everyday Writing Vol. 1 Scripts and Texts (with Alan Bowman, Oxford) http://bit.ly/MREW1, and introductions to Gaulish in three languages (with Coline Ruiz Darasse, Bordeaux). I collaborate in several international projects, including on Gaulish inscriptions (ANR), technology for reading ancient texts (SSHRC), writing tablets from Britannia (British Academy), and Roman Inscriptions of Britain in Schools (UKRI) https://romaninscriptionsofbritain.org/. At Oxford I lectured on Imperial and Late Latin, Roman Britain and Latin Epigraphy for the Classics Faculty.

Paul-James White has been conducting research into automorphic forms. He wrote two mathematical papers, and continued working on a book with Tasho Kaletha (Princeton), Alberto Minguez (Paris VI), and Sug Woo Shin (MIT). He also gave a graduate course on modular forms.