Real Solutions for Fake News? Measuring the Effectiveness of General Warnings and Fact-Check Tags in Reducing Belief in False Stories on Social Media

Political Behavior - Social media has increasingly enabled “fake news” to circulate widely, most notably during the 2016 U.S. presidential campaign. These intentionally false...     

Reflections on variability in the blood–breath ratio of ethanol and its importance when evidential breath-alcohol instruments are used in law enforcement

Variability in the blood–breath ratio (BBR) of alcohol is important, because it relates a measurement of the blood-alcohol concentration (BAC) with the co-existing breath-alcohol concentration (BrAC). The BBR is also used to establish the statutory BrAC limit for driving from the existing statutory BAC limits in different countries. The in-vivo BBR depends on a host of analytical, sampling and physiological factors, including subject demographics, time after end of drinking (rising or falling BAC), the nature of the blood draw (whether venous or arterial) and the subject’s breathing pattern prior to exhalation into the breath analyzer. The results from a controlled drinking study involving healthy volunteers (85 men and 15 women) from three ethnic groups (Caucasians, Hispanics and African Americans) were used to evaluate various factors influencing the BBR. Ethanol in breath was determined with a quantitative infrared analyzer (Intoxilyzer 8000) and BAC was determined by headspace gas chromatography (HS-GC). The BAC and BrAC were highly correlated (r = 0.948) and the BBR in the post-absorptive state was 2 382 ± 119 (mean ± SD). The BBR did not depend on gender (female: 2 396 ± 101 and male: 2 380 ± 123, P > 0.05) nor on racial group (Caucasians 2 398 ± 124, African Americans 2 344 ± 119 and Hispanics 2 364 ± 104, P > 0.05). The BBR was lower in subjects with higher breath- and body-temperatures (P < 0.05) and it also decreased with longer exhalation times into the breath-analyzer (P < 0.001). In the post-absorptive state, none of the 100 subjects had a BBR of less than 2 100:1.     

Assessing civil society impact for democracy programmes: Using an advocacy scale in Indonesia and the Philippines

Democracy assistance programmes have always been notoriously difficult to measure in terms of outcome, but the need to show their impact (or lack of it) remains critical. This article represents part of a continuing endeavour to develop a tool for measuring civil society programme impact in the form of an advocacy scale encompassing democracy's critical components of participation, accountability and contestation. The scale is tested in the context of USAID-assisted initiatives in the Philippines and Indonesia, where it demonstrates a capacity both to monitor donor assistance outcomes and to suggest future programme initiatives.     

Exit, Loyalty, and Collective Action Among Workers in a Simulated Business Environment: Interactive Effects of Group Identification and Boundary Permeability

Past research on the effects of boundary permeability and tokenism (open boundaries with restricted access) suggests that when options for individual mobility exist, members of low status groups tend to exit their group and attempt to enter higher status groups. We hypothesized that the effects of boundary permeability on preferences for individual vs. collective action would depend upon prior levels of in-group identification, such that people who are more identified with their group would remain loyal and choose collective action, even under conditions of high boundary permeability. To test this hypothesis, a 2 (High vs. Low Group Identification) × 2 (High vs. Low Permeability) experimental design was employed to assess preferences for exit and loyalty in the context of a simulated business environment. For both rating measures and behavioral choices, the interaction hypothesis was supported. Implications for group loyalty and strategies of tokenism are discussed.