Social and Behavioral Sciences Commons^™

Validation Of Inverse Seasonal Peak Mortality In Medieval Plagues, Including The Black Death, In Comparison To Modern Yersinia Pestis-Variant Diseases, Mark R. Welford, Brian H. Bossak

School of Earth, Environment, and Sustainability Faculty Publications

Background: Recent studies have noted myriad qualitative and quantitative inconsistencies between the medieval Black Death (and subsequent ‘‘plagues’’) and modern empirical Y. pestis plague data, most of which is derived from the Indian and Chinese plague outbreaks of A.D. 1900615 years. Previous works have noted apparent differences in seasonal mortality peaks during Black Death outbreaks versus peaks of bubonic and pneumonic plagues attributed to Y. pestis infection, but have not provided spatiotemporal statistical support. Our objective here was to validate individual observations of this seasonal discrepancy in peak mortality between historical epidemics and modern empirical data.

Methodology/Principal Findings: …

Facilitation Of Learning Spatial Relations Among Goal Locations Does Not Require Visual Exposure To The Configuration Of Goal Locations, Bradley R. Sturz, Debbie M. Kelly, Michael F. Brown

Department of Psychology Faculty Presentations

Human participants searched in a virtual-environment open-field search task for four hidden goal locations arranged in a diamond configuration located in a 5 x 5 matrix. Participants were randomly assigned to one of three groups: Pattern Only, Landmark + Pattern, or Cues + Pattern. All participants experienced a Training phase followed by a Testing phase. During Training, visual cues were coincident with goal locations for the Cues + Pattern group, and a single visual cue at a non-goal location maintained a consistent spatial relationship with the goal locations for the Landmark + Pattern group. All groups were then tested in …