Revisiting the quantitative-qualitative debate:Implications for mixed-methods research

Health care research includes many studies that combine quantitative and qualitative methods. In this paper, we revisit the quantitative-qualitative debate and review the arguments for and against using mixed-methods. In addition, we discuss the implications stemming from our view, that the paradigms upon which the methods are based have a different view of reality and therefore a different view of the phenomenon under study. Because the two paradigms do not study the same phenomena, quantitative and qualitative methods cannot be combined for cross-validation or triangulation purposes. However, they can be combined for complementary purposes. Future standards for mixed-methods research should clearly reflect this recommendation.

The Continuing Debate on Deep Molluscan Phylogeny: Evidence for Serialia (Mollusca, Monoplacophora + Polyplacophora)

Molluscs are a diverse animal phylum with a formidable fossil record. Although there is little doubt about the monophyly of the eight extant classes, relationships between these groups are controversial.We analysed a comprehensive multilocus molecular data set for molluscs, the first to include multiple species from all classes, including five monoplacophorans in both extant families. Our analyses of fivemarkers resolve two major clades: the first includes gastropods and bivalves sister to Serialia (monoplacophorans and chitons), and the second comprises scaphopods sister to aplacophorans and cephalopods. Traditional groupings such as Testaria, Aculifera, and Conchifera are rejected by our data with significant Approximately Unbiased (AU) test values. A new molecular clock indicates that molluscs had a terminal Precambrian origin with rapid divergence of all eight extant classes in the Cambrian. Therecovery of Serialia as a derived, Late Cambrian clade is potentially in line with the stratigraphic chronology of morphologically heterogeneous early mollusc fossils. Serialia is in conflict with traditional molluscan classifications and recent phylogenomic data. Yet our hypothesis, as others from molecular data, implies frequent molluscan shell and body transformations by heterochronic shifts in development and multiple convergent adaptations, leading to the variable shells and body plans in extant lineages.

Ambient Temperature Hydrocarbon Selective Catalytic Reduction of NOx Using Atmospheric Pressure Nonthermal Plasma Activation of a Ag/Al2O3 Catalyst

Atmospheric pressure nonthermal-plasma-activated catalysis for the removal of NOx using hydrocarbon selective catalytic reduction has been studied utilizing toluene and n-octane as the hydrocarbon reductant. When the plasma was combined with a Ag/Al2O3 catalyst, a strong enhancement in activity was observed when compared with conventional thermal activation with high conversions of both. NOx and hydrocarbons obtained at temperature at temperature ≤250 °C, where the silver catalyst is normally inactive. Importantly, even in the absence of an external heat source, significant activity was obtained. This low temperature activity provides the basis for applying nonthermal plasmas to activate emission control catalysts during cold start conditions, which remains an important issue for mobile and stationary applications.

Using debate to teach pharmacy students about ethical issues

Objective. To create, implement, and evaluate debate as a method of teaching pharmacy undergraduate students about ethical issues.

Design. Debate workshops with 5 hours of contact with student peers and facilitators and 5 hours of self-study were developed for second-year pharmacy students. Student development of various skills and understanding of the topic were assessed by staff members and student peers.

Assessment. One hundred fifty students completed the workshops. The mean score for debating was 25.9 out of 30, with scores ranging from 23.2 to 28.7. Seventy percent of students agreed that the debates were a useful teaching method in the degree program.

Conclusion. A series of workshops using debates effectively delivered course content on ethical issues and resulted in pharmacy students developing skills such as teamwork, peer assessment, communication, and critical evaluation. These findings suggest that pharmacy students respond favorably to a program using debates as a teaching tool.

The Evidence Debate for Behavioural Interventions for Autism

For more than fifty years evidence has been accrued regarding the efficacy of applied behaviour analysis-based interventions for individuals with autism spectrum disorders. Despite this history of empirical evidence, some researchers and ASD experts still are reluctant to accept behavioral interventions as best practice for ASD. In this paper, we consider both random control trials and single subject experimental designs as forms of evidenced-based practice (EBP). Specific application of these methods to ASD research is considered. In an effort to provide scientifically based evidence for interventions for ASD, EBP standards have been debated without a consensus being achieved. Service users of ASD interventions need access to sound empirical evidence to choose appropriate programmes for those they care for with ASD rather than putting their hopes in therapies backed by pseudoscience and celebrity endorsements.

Scotland, Renewable Energy and the Independence Debate: Will Head or Heart Rule the Roost?

Political support for renewable energy development, especially offshore renewables, is particularly conspicuous in Scotland and is a centrepiece of SNP policy. However, this is built on something of a paradox because, put simply, without the subsidies paid by electricity consumers in the rest of the UK, the Scottish Government's ambitious targets for renewable energy would be politically unachievable. We argue in this paper that if Scotland does move towards independence, then there could be little reason for the UK to continue paying (much) of the subsidies since the resulting renewable generation would no longer contribute towards UK renewable energy targets. We suggest that the potential scenarios, and their implications, needs to be far better considered in the arguments around the Scottish constitutional position and the broader aims of UK energy policy.