Cognitive information levels,voter preferences,and local partisan political activity: A field experimental study on the effects of timing and order of message presentation

This article is based upon a factorial design field experiment conducted during the 1980 election campaign. The experiment was conducted to assess whether there is an optimal message strategy available to local party workers in their efforts to inform and persuade voters. The study assesses whether the timing of communications, i.e., near or distant to election day, and the order of message presentation, i.e., whether presenting important information early or late in a communication, have any effects upon voters' information levels and electoral decisions. The analysis supports an interpretation of recency effects, i.e., information presented last in a partisan appeal was more likely to facilitate information and persuasion effects than information positioned first. However, this finding was conditioned upon the timing of message presentation with appeals referencing familiar partisan material only effective near to election day and appeals referencing less familiar and nonpartisan material only effective further from election day.     

Self-reports of Police Speeding Stops by Race: Results from the North Carolina Reverse Record Check Survey

Survey reports of police stops and driving behavior are a potential methodology for examining the magnitude and prevalence of the “Driving While Black” phenomena. However, estimates of the magnitude or correlates of racial disparity in police stops from self-reported survey data are potentially compromised if the accuracy of self-reports of police stops and driving behavior differ by race. We report on the results of a reverse record check survey in which we directly assess the degree and consequences of differences by race in self-reports of police stops. In our sample of drivers who had been cited for speeding in the preceding year, we found that 77% of the White respondents and 71% of the African American respondents admitted to being stopped. While both groups underreport stops, African Americans do so at a higher rate. This finding is consistent with many past studies which report stronger social desirability effects on survey responses among African Americans. Thus, survey data will tend to underestimate the magnitude of the “Driving While Black” phenomena.

Detection of visible and latent fingerprints using micro-X-ray fluorescence elemental imaging

Using micro-X-ray fluorescence (MXRF), a novel means of detecting fingerprints was examined in which the prints were imaged based on their elemental composition. MXRF is a nondestructive technique. Although this method requires a priori knowledge about the approximate location of a print, it offers a new and complementary means for detecting fingerprints that are also left pristine for further analysis (including potential DNA extraction) or archiving purposes. Sebaceous fingerprints and those made after perspiring were detected based on elements such as potassium and chlorine present in the print residue. Unique prints were also detected including those containing lotion, saliva, banana, or sunscreen. This proof-of-concept study demonstrates the potential for visualizing fingerprints by MXRF on surfaces that can be problematic using current methods.