Variability or Moderation? The Effects of Ambivalence on Political Opinions

Prior research theorizes that ambivalence makes opinions about an object unreliable in the sense of being haphazard, unpredictable, or variable. As such, ambivalence is a prominent explanation for seeming nonattitudes in opinion surveys. This study proposes an alternative account of the effects of ambivalence on attitudes. It posits that people who are ambivalent about an issue split the difference between their conflicting considerations by taking a position near the middle of the bipolar opinion scale, which reflects a moderate attitude. I show how the widely-used method of modeling the supposed variability of ambivalent opinions conflates variability and moderation. This problem is addressed by modeling variability and moderation of attitudes separately, without this confound. Using this strategy in analyses involving four datasets and three policy domains, the results show that ambivalence is associated with moderate, not variable, attitudes. Ambivalence does not increase the variability of opinions but, rather, moves them quite predictably toward the middle of the response scale. The results recast our understanding of the effects of ambivalence on political opinions and raise questions about the ability of ambivalence to explain nonattitudes in surveys.     

An innovative transfer DNA experimental design and qPCR assay: Protocol and pilot study

Forensic “touch” DNA samples are low-quantity samples that are recovered from surfaces that have been touched by single or multiple individuals. These samples can include DNA from primary contributors who directly touched the surface, as well as secondary contributors whose DNA was transferred to the surface through an intermediary. It is difficult to determine the type of transfer, or how often and under what conditions DNA transfer occurs. In this paper, we present an innovative protocol that combines (1) a paired male and female transfer DNA experimental design in which the presence of male DNA indicates secondary transfer and (2) a cost-effective quantitative PCR (qPCR) assay of a sex-specific region in the Amelogenin gene to detect male and female DNA. We evaluate the ability of the Amelogenin qPCR assay to detect low concentrations of male and female DNA in mixed samples. We also test experimental DNA samples using our transfer DNA protocol to differentiate primary and secondary DNA transfer. Male DNA was detected in the majority of known mixed samples, even in samples with 4× more female DNA—this result demonstrates the ability to detect low concentrations of male DNA and the presence of secondary transfer DNA in our experimental design. Primary DNA transfer was detected in 100% of our experimental trials and secondary DNA transfer was detected in 37.5% of trials. Our innovative protocol mimics realistic case scenarios to establish rates of primary and secondary DNA transfer in an inexpensive and simplified manner.     

The incidence and magnitude of the health costs of in-person schooling during the COVID-19 pandemic

Public Choice - The health costs of in-person schooling during the pandemic, if any, fall primarily on the families of students, largely owing to the fact that students significantly outnumber...     

The utility of polyester and cotton as swabbing substrates for the removal of cellular material from surfaces

Various types of cotton and polyester fabrics were tested to ascertain the optimal physical and chemical characteristics of fabrics needed for the removal of cellular material from surfaces. DNA quantitation values obtained on dried saliva stains showed no difference between cotton and polyester across all constructions and solvent conditions. Fabrics used dry and with water yielded higher quantitation values than those used with isopropanol. Quantitation values were also higher for wovens and nonwovens than knits across all solvent conditions. Low thread count fabrics used with water yielded higher quantitation values, but no correlation between thread count and quantitation values was observed with dry fabrics. A low thread count woven fabric, however, outperformed other tested fabrics when swabbing object surfaces in a highly used room. Full DNA profiles from fingerprints on glass surfaces were obtained with low thread count woven and nonwoven fabrics but not with the knit fabric tested.     

Translation Approaches in Constitutional Hermeneutics

International Journal for the Semiotics of Law - Revue internationale de Sémiotique juridique - In this article, we suggest an alternate approach to interpreting the US Constitution, using...