A note on measuring political participation in comparative research

This article presents an application of Prezeworski and Teune's so-called “identity-equivalence method” to a large set of indicators of political participation. By relaxing commonly held assumptions about necessary distinctions among types of participation, it is found that the distinction between “conventional” and “unconventional” modes of participation is unnecessary, while the distinction between “government” and “nongovernment” has some merit. The findings also lend further support to the claims of Prezeworski and Teune that the identity-equivalence method is preferable to the identical indicator method

Value orientation, left-right placement and voting

In this article we try to disentangle the constraints between traditional lines of political polarization (left-right placement) and newer distinctions (materialist/postmaterialist values) among mass publics. It is shown that voting or party preference is most clearly related to the left-right placement of the respondents. However, this placement is directly and strongly dependent on the materialist/postmaterialist orientation, while background variables like education, income and age are linked to voting via this value orientation. The materialist/postmaterialist orientation appears to be the present-day interpretation of the dominant political conflict in advanced industrial society. Although alignments and orientations count for a substantive part of the variance in voting, the power of these models to predict the actual vote of people turns out to be rather poor

Political involvement and social capital in Europe

"Levels of political involvement still are surprisingly different among European citizenries. Apparently, neither the establishment of democratic institutions nor the rise in competences among mass publics has lead to a convergence of the levels of political involvement. Only at a very general level, systemic differences can be noted between the settled democracies of North-western Europe and the newer democracies of Southern Europe. The analyses presented here examine several explanations of the cross-national differences in political involvement by developing multi-level models combining the impact of various factors at the individual and the macro level using the first wave of the European Social Survey (2002-2003) as the primary data source. The results show that of the social capital factors, only the support for norms and values contributes to the explanation of political involvement after the conventional antecedents at the individual level are taken into account. Neither social capital understood as an individual resource, nor social capital understood as a conditional effect at the macro level, appears to be very relevant for the explanation of differences in political involvement. Instead, the multi-level models tested here underline the relevance of conventional individual-level factors. Cross-national differences in political involvement are mainly due to differences in the distributions of these factors in the various countries." (author's abstract

Redox-based epigenetic status in drug addiction: a potential contributor to gene priming and a mechanistic rationale for metabolic intervention

Alcohol and other drugs of abuse, including psychostimulants and opioids, can induce epigenetic changes: a contributing factor for drug addiction, tolerance and associated withdrawal symptoms. DNA methylation is the major epigenetic mechanism and it is one of more than 200 methylation reactions supported by methyl donor S-adenosylmethionine (SAM). The levels of SAM are controlled by cellular redox status via the folate and vitamin B12-dependent enzyme methionine synthase (MS), for example; under oxidative conditions MS is inhibited, diverting its substrate homocysteine (HCY) to the transsulfuration pathway. Alcohol, dopamine and morphine, can alter intracellular levels of glutathione (GSH)-based cellular redox status, subsequently affecting S-adenosylmethionine (SAM) levels and DNA methylation status. In this discussion, we compile this and other existing evidence in a coherent manner to present a novel hypothesis implicating the involvement of redox-based epigenetic changes in drug addiction. Next, we also discuss how gene priming phenomenon can contribute to maintenance of redox and methylation status homeostasis under various stimuli including drugs of abuse. Lastly, based on our hypothesis and some preliminary evidence, we discuss a mechanistic explanation for use of metabolic interventions / redox-replenishers as symptomatic treatment of alcohol addiction and associated withdrawal symptoms. Hence, the current review article strengthens the hypothesis that neuronal metabolism has a critical bidirectional coupling with epigenetic changes in drug addiction and we support this claim via exemplifying the link between redox-based metabolic changes and resultant epigenetic consequences under the effect of drugs of abuse