Processional Culture and Black Mobility in Maggie Washington's Wilmington

This article addresses changes in the built environment of the postbellum American South through an examination of the life histories, parade routes, and costuming practices of the Afro-Caribbean Jonkonnu masking tradition. I juxtapose the stories of two practitioners of the tradition across the color line in turn-of-the-twentieth-century Wilmington, North Carolina. Using a material culturally inflected approach to the study of landscapes, I use these two narratives to deepen the histories of African American processional cultures toward a longer time span and a more immersive, performer-oriented approach. Though few conventional objects of ornamentation and display from these practices survive, this article posits that an approach rooted in the materiality of landscape can help uncover festive cultures that have been understudied or undertheorized in more conventional historical approaches. Further, the ubiquitous presence of Jonkonnu and other Black processional traditions in the post-emancipation city suggests the importance of these and other objects, practices, and larger cultures of celebration in combating white supremacist culture.

Uncertainty and Prior Assumptions, Rather Than Innate Logarithmic Encoding, Explain Nonlinear Number-to-Space Mapping

Mapping number to space is natural and spontaneous but often nonveridical, showing a clear compressive nonlinearity that is thought to reflect intrinsic logarithmic encoding of numerical values. We asked 78 adult participants to map dot arrays onto a number line across nine trials. Combining participant data, we confirmed that on the first trial, mapping was heavily compressed along the number line, but it became more linear across trials. Responses were well described by logarithmic compression but also by a parameter-free Bayesian model of central tendency, which quantitatively predicted the relationship between nonlinearity and number acuity. To experimentally test the Bayesian hypothesis, we asked 90 new participants to complete a color-line task in which they mapped noise-perturbed color patches to a “color line.” When there was more noise at the high end of the color line, the mapping was logarithmic, but it became exponential with noise at the low end. We conclude that the nonlinearity of both number and color mapping reflects contextual Bayesian inference processes rather than intrinsic logarithmic encoding.

Decolonizing the Color-Line: A Topological Analysis of W.E.B. Du Bois's Infographics for the 1900 Paris Exposition

As infographics are implicated in racist policies like redlining, we need to decolonize the genre. But previous studies have found that infographics’ panopticism—their at-a-glance reduction of complex issues—makes them tend to support hegemonic power structures in spite of their designers’ intentions. A way out of this dilemma can be located in the first attempt to decolonize the infographic: W.E.B. Du Bois's series depicting Black life in the United States, created for the 1900 Paris Exposition. This topological analysis of Du Bois's decolonial project reveals both problematic and promising avenues for our own attempts to decolonize the infographic.