A Method of Generating Modal Logics Defining Jaśkowski’s Discussive Logic D<Subscript>2</Subscript>

Ja?kowski’s discussive logic D₂ was formulated with the help of the modal logic S5 as follows (see [7, 8]): \({A \in {D_{2}}}\) iff \({\ulcorner\diamond{{A}^{\bullet}}\urcorner \in {\rm S}5}\), where (–)^? is a translation of discussive formulae from For^d into the modal language. We say that a modal logic L defines D₂ iff \({{\rm D}_{2} = \{A \in {\rm For^{\rm d}} : \ulcorner\diamond{{A}^{\bullet}}\urcorner \in {\it L}\}}\). In [14] and [10] were respectively presented the weakest normal and the weakest regular logic which (?): have the same theses beginning with ‘\({\diamond}\)’ as S5. Of course, all logics fulfilling the above condition, define D₂. In [10] it was prowed that in the cases of logics closed under congruence the following holds: defining D₂ is equivalent to having the property (?). In this paper we show that this equivalence holds also for all modal logics which are closed under replacement of tautological equivalents (rte-logics).We give a general method which, for any class of modal logics determined by a set of joint axioms and rules, generates in the given class the weakest logic having the property (?). Thus, for the class of all modal logics we obtain the weakest modal logic which owns this property. On the other hand, applying the method to various classes of modal logics: rte-logics, congruential, monotonic, regular and normal, we obtain the weakest in a given class logic defining D₂.     

Negations and natural sampling in data selection: Ecological versus heuristic explanations of matching bias

Matching bias occurs when people ignore negations when testing a hypothesis--for example, if A, then not 2--and select possible data types that are named in the hypothesis (i.e., A and 2; Evans & Lynch, 1973). There are two explanations of this bias: the heuristic account and the contrast class account. The latter is part of Oaksford and Chater's (1994) ecological approach to data selection. On this account, a contrast set (i.e., birds that are not ravens) has a higher probability than the original set (i.e., birds that are ravens). This article reports two experiments in which these accounts make divergent predictions. The same materials were used as those in Yama (2001), who found more support for the heuristic approach. Experiment 1 replicated Yama with Western participants. Experiment 2 used a procedure introduced by Oaksford and Wakefield (2003). Rather than present participants with one of each of the four possible data types all at once, 50 were presented one at a time. The proportions of each data type reflected the relevant probabilities. The results supported the ecological approach, showing that people constructed contrast sets that strongly influenced their data selection behavior. The results were not consistent with the heuristic approach.     

Why do employees engage in counterproductive work behaviours? Cultural values and white-collar employees in China

This study examines the role of cultural values in influencing counterproductive work behaviours (CWBs). In particular, it focuses on the cultural values of power distance, long-term orientation and collectivism (both horizontal and vertical collectivism) as well as the Confucian values of guanxi and harmony. In line with recent approaches in moral psychology and sociology, we consider how Confucian values become moral triggers or inhibitors for employees to engage in CWB. In addition, we consider the moderating effects of guanxi and harmony on the relationships between the cultural values of power distance, long-term orientation, collectivism and CWB. The results from a survey of 489 white-collar employees in China confirmed the importance of cultural values in influencing CWB. Specifically, our findings indicate that guanxi moderates the relationship between cultural values and CWB and acts as a moral trigger for an employee to engage in CWB. With the exception of horizontal collectivism, we also found that harmony moderates the relationship between cultural values and CWB. Specifically, harmony acts as a moral inhibitor for an employee to engage in CWB. Lastly, we discuss the implications of the findings for theory and practice in the context of managing an increasingly global workplace and business environment.

     

Gender differences and the awareness of plagiarism in higher education

Plagiarism is increasingly prevalent in the educational and research culture in higher education. Students are more and more looking for quick solutions when writing research papers and theses. In this paper, students’ awareness of plagiarism and possible gender differences in this awareness are presented. Gender differences in plagiarism awareness were analysed both generally and within several socio-economic contexts (e.g. social life, living with parents/grandparents, living in a student hall of residence, motivation for study and working during studies). Our study was conducted at the University of Maribor in Slovenia. The findings have revealed statistically significant gender differences in students’ plagiarism awareness; specifically, women have a much more negative attitude towards plagiarism than men. Regarding awareness, students could be divided into three groups: (1) students who are aware of plagiarism but do not consider it wrong or unethical, (2) students who are unaware of plagiarism, and (3) students who are aware of plagiarism but continue to plagiarise despite knowing it to be wrong. A very busy social life, strong motivation for study and working during studies also strongly affect plagiarism and reveal gender differences. Based on the findings of the study, this paper puts forward recommendations for plagiarism prevention. Our recommendations encompass the implementation of a plagiarism policy within academic institutions, strict sanctions on plagiarism, teaching students how to avoid plagiarism and, finally, a national programme for the promotion of academic integrity.     

Language access and theory of mind reasoning: evidence from deaf children in bilingual and oralist environments

This investigation examined whether access to sign language as a medium for instruction influences theory of mind (ToM) reasoning in deaf children with similar home language environments. Experiment 1 involved 97 deaf Italian children ages 4-12 years: 56 were from deaf families and had LIS (Italian Sign Language) as their native language, and 41 had acquired LIS as late signers following contact with signers outside their hearing families. Children receiving bimodal/bilingual instruction in LIS together with Sign-Supported and spoken Italian significantly outperformed children in oralist schools in which communication was in Italian and often relied on lipreading. Experiment 2 involved 61 deaf children in Estonia and Sweden ages 6-16 years. On a wide variety of ToM tasks, bilingually instructed native signers in Estonian Sign Language and spoken Estonian succeeded at a level similar to age-matched hearing children. They outperformed bilingually instructed late signers and native signers attending oralist schools. Particularly for native signers, access to sign language in a bilingual environment may facilitate conversational exchanges that promote the expression of ToM by enabling children to monitor others' mental states effectively.     

Disjunctive and Conjunctive Multiple-Conclusion Consequence Relations

Studia Logica - Two different kinds of multiple-conclusion consequence relations taken from Shoesmith and Smiley (Multiple-conclusion logic, Cambridge University Press, Cambridge, 1978) and Galatos...     

Why should we try to think like scientists? Scientific reasoning and susceptibility to epistemically suspect beliefs and cognitive biases

This paper examines whether scientific reasoning skills predict people's susceptibility to epistemically suspect beliefs and cognitive biases. We used the recently developed Scientific Reasoning Scale (SRS) because it measures the ability to read and evaluate scientific evidence. Alongside the SRS, 317 participants aged 18–30 years completed measures of thinking dispositions and cognitive ability to ascertain whether the SRS contributes specifically to susceptibility to epistemically suspect beliefs and cognitive biases. Scientific reasoning correlated positively with dispositions towards analytic thinking and cognitive ability and negatively with dogmatism, epistemically suspect beliefs, and susceptibility to cognitive biases. Most importantly, it emerged as a significant predictor, contributing to susceptibility to both cognitive biases and epistemically suspect beliefs over and above the other cognitive predictors. These results provide the first empirical evidence that scientific reasoning ability is an important factor in protecting against epistemically suspect beliefs and in aiding better decision making among the non-scientific population.     

Berdjaev: authentic existence or a negative sociology

This paper is a contribution to the constantly increasing Polish interest in Russian thought, especially in Nicolas Berdjaev’s philosophy. The differences between Western philosophy and Russian religious thinking are mentioned in passing. Berdjaev’s existential personalism, which from the sociological point of view can be described as a freedom from the world, is dealt with. The thinker contrasts persons and their activities with the objectified world and emphasizes the existential strangeness of the person in the world of culture bound by different determining factors.