A propositional logic is defined which in addition to propositional language contains a list of probabilistic operators of the form P ≥s (with the intended meaning ‘‘the probability is at least s’’). The axioms and rules syntactically determine that ranges of probabilities in the corresponding models are always finite. The completeness theorem is proved. It is shown that completeness cannot be generalized to arbitrary theories.

We examine corruption across three Central and Eastern Europe countries through a social psychology framework which integrates social identity theory, social cognitive theory and moral disengagement mechanisms. We illustrate how various social identities influence individual and collective action in terms of ethical behavior and corruption, thereby creating, maintaining and perpetuating petty, grand and systemic public/private corruption through triadic co-determination via cognition, behavior and the environment. Despite growing research on corruption normalization, less is known about the cognitive and behavioral mechanisms in (...) ethical decision making, the cognitive workings of how individuals reconcile unethical behavior and the social psychological processes behind corruption in society and organizations. Expert interviews reveal internally conflicted multi-layered social identities perpetuating corruption, some embedded in nationalistic history and others tied to the European Union, which supports the divergent paths of CEE countries since the fall of communism. Some moral disengagement mechanisms are common across all three countries, while others are linked to specific circumstances. Social identity mechanisms feed into moral disengagement, which individuals draw upon to reconcile the conflict between unethical behavior and moral codes. Patterns of moral disengagement aggregate to the country level and explain normalization of corruption in CEE society and organizations. (shrink)