Visual word recognition in a second language : a test of the lexical entrenchment hypothesis with lexical decision times

The word frequency effect is stronger in second language (L2) processing than in first language (L1) processing. According to the lexical entrenchment hypothesis, this difference is not due to a qualitative difference in word processing between L1 and L2, but can be explained by differences in exposure to the target language: People with less exposure to a language show a steeper frequency curve for that language. Exposure differences can be measured with a vocabulary test. The present study tested whether the lexical entrenchment hypothesis provides an adequate explanation for differences in lexical decision times. To this end, we compared the performance of 56 Dutch-English bilinguals to that of 1011 English L1 speakers on 420 English six-letter words. In line with previous research, the differences in the word frequency effect between word processing in L1 and in L2 became vanishingly small once vocabulary size was entered as a predictor. Only in a diffusion model analysis did we find some evidence that the information build-up may be slower in L1 than in L2, independent of vocabulary size. We further report effects of cognates, age-of-acquisition, and neighborhood size that can also be explained in terms of differences in exposure

LpL^p-theory for fractional gradient PDE with VMO coefficients

In this paper, we prove $L^p$ estimates for the fractional derivatives of solutions to elliptic fractional partial differential equations whose coefficients are $VMO$. In particular, our work extends the optimal regularity known in the second order elliptic setting to a spectrum of fractional order elliptic equations.Comment: 10 page

Instability statistics and mixing rates

We claim that looking at probability distributions of \emph{finite time} largest Lyapunov exponents, and more precisely studying their large deviation properties, yields an extremely powerful technique to get quantitative estimates of polynomial decay rates of time correlations and Poincar\'e recurrences in the -quite delicate- case of dynamical systems with weak chaotic properties.Comment: 5 pages, 5 figure

Recent Perceptions of Rural Australia in Italian and Italian Australian Narrative

Italian settlement in rural and outback areas of Australia during the late 1800s and early 1900s has remained a largely unsung saga while most Italians migrating to Australia after 1947 ultimately settled in urban areas. Few narrative writers have written about non-urban Australia in substantially social realist terms. More recently, this trend had taken a post-modern perspective in a few Italian Australian and Italian writers who depict the Australian outback as providing a solution to the protagonists' life quest and promote a discourse on nature as a dynamic, positive and vital element that contrasts with man's static negativism

Private Credit in 129 Countries

We investigate cross-country determinants of private credit, using new data on legal creditor rights and private and public credit registries in 129 countries. We find that both creditor protection through the legal system and information sharing institutions are associated with higher ratios of private credit to GDP, but that the former is relatively more important in the richer countries. An analysis of legal reforms also shows that improvements in creditor rights and in information sharing precede faster credit growth. We also find that creditor rights are extremely stable over time, contrary to the convergence hypothesis. Finally, we find that legal origins are an important determinant of both creditor rights and information sharing institutions.