Personality traits describe dispositions influencing individuals' behavior and performance at work. However, in the context of personnel selection, the use of personality measures has continuously been questioned. To date, research in selection settings has focused uniquely on predicting task performance, missing the opportunity to exploit the potential of personality traits to predict non-task performance. Further, personality is often measured with self-report inventories, which are susceptible to self-distortion. Addressing these gaps, the planned study seeks to design new personality measures to be (...) used in the selection context to predict a wide range of performance criteria. Specifically, we will develop a situational judgment test and a behavior description interview, both assessing Big Five personality traits and Honesty-Humility to systematically compare these new measures with traditional self-report inventories regarding their criterion-related validity to predict four performance criteria: task performance, adaptive performance, organizational citizenship behavior, and counterproductive work behavior. Data will be collected in a simulated selection procedure. Based on power analyses, we aim for 200 employed study participants, who will allow us to contact their supervisors to gather criterion data. The results of this study will shed light on the suitability of different personality measures to predict an expanded range of performance criteria. (shrink)

The extended mind view and the embodied-grounded view of cognition and language are typically considered as rather independent perspectives. In this paper we propose a possible integration of the two views and support it proposing the idea of “Words As social Tools” (WAT). In this respect, we will propose that words, also due to their social and public character, can be conceived as quasi-external devices that extend our cognition. Moreover, words function like tools in that they enlarge the bodily space (...) of action thus modifying our sense of body. To support our proposal, we review the relevant literature on tool-use and on words as tools and report recent evidence indicating that word use leads to an extension of space close to the body. In addition, we outline a model of the neural processes that may underpin bodily space extension via word use and may reflect possible effects on cognition of the use of words as external means. We also discuss how reconciling the two perspectives can help to overcome the limitations they encounter if considered independently. (shrink)

Recent theories on abstract concepts and words (ACs), such as Words As social Tools (WAT) (Borghi et al., 2019b) and Language is an Embodied Neuroenhancement and Scaffold (LENS) (Dove, 2019) have underlined the crucial role of both sensorimotor experience and language for ACs representation and use [see Dove et al. (2020), for a comparison]. Here we focus on the WAT view. WAT highlights the role of language, sociality, and inner grounding (interoception, metacognition) for ACs. Furthermore, WAT seeks to integrate a (...) developmental perspective with approaches focusing on conceptual use and brain representation. We briefly illustrate evidence coming from both clinical and non-clinical populations and identify areas where additional evidence that ACs evoke linguistic, social, and interoceptive experience is still needed. (shrink)

Both evolutionary and developmental research indicate that humans are adapted to respecting property rights, independently (and possibly orthogonally) of considerations of fairness. We offer evidence from psychological experiments suggesting that enforcing one's rights and respecting others' possessions are basic cognitive mechanisms automatically activated and grounded in humans' sensory-motor system. This may entail an independent motivation that is more profound than considerations of fairness and impartiality.

The paper begins with the distinction between different ways of thinking about the posthuman. From the question about the possibility of the formulation of an ethics that goes beyond the precautionary principle the following thesis is defended: posthumanism, in its transhumanist interpretation, is the most consistent standpoint with normative ethics as we know it, if and only if the consequentialist approach characteristic of their supporters is complemented with the deontological one. For this two assumptions are made: the idea of a (...) continuity between humans and posthumans and the right of a human to exercise enhancements on himself/herself that take him/her to a state qualifiable as posthuman, provided that those do not conflict with human dignity. (shrink)

Thinking about what the senses cannot grasp is one of the hallmarks of human cognition. We argue that “intangible abstracta” are represented differently from other products of abstraction, that goal-derived categorization supports their learning, and that they are grounded also in internalized linguistic and social interaction. We conclude by suggesting different ways in which abstractness contributes to cement group cohesion.

Artefacts are usually understood in contrast with natural kinds and conceived as a unitary kind. Here we propose that there is in fact a variety of artefacts: from the more concrete to the more abstract ones. Moreover, not every artefact is able to fulfil its function thanks to its physical properties: Some artefacts, particularly what we call “institutional” artefacts, are symbolic in nature and require a system of rules to exist and to fulfil their function. Adopting a standard method to (...) measure conceptual representation (the property generation task), we have experimentally explored how humans conceptualise these different kinds of artefacts. Results indicate that institutional artefacts are typically opposed to social objects, while being more similar to standard artefacts, be they abstract or concrete. (shrink)

The role played by language in our cognitive lives is a topic at the centre of contemporary debates in cognitive (neuro)science. In this paper we illustrate and compare two theories that offer embodied explanations of this role: the WAT (words as social tools) and the LENS (language is an embodied neuroenhancement and scaffold) theories. WAT and LENS differ from other current proposals, because they connect the impact of the neurologically realized language system on our cognition to the ways in which (...) language shapes our interaction with the physical and social environment. Examining these theories together, their tenets and supporting evidence, sharpens our understanding of each, but also contributes to a better understanding of the contribution that language might make to the acquisition, representation and use of abstract concepts. Here we focus on how language provides a source of inner grounding, especially metacognition and inner speech, and supports the flexibility of our thought. Overall, the paper outlines a promising research program focused on the importance of language to abstract concepts within the context of a flexible, multimodal, and multilevel conception of embodied cognition. (shrink)

8 March, now known as International Women’s Day, is a day for feminist claims where demonstrations are organized in over 150 countries, with the participation of millions of women all around the world. These demonstrations can be viewed as collective rituals and thus focus attention on the processes that facilitate different psychosocial effects. This work aims to explore the mechanisms involved in participation in the demonstrations of 8 March 2020, collective and ritualized feminist actions, and their correlates associated with personal (...) well-being and collective well-being, collective efficacy and collective growth, and behavioral intention to support the fight for women’s rights. To this end, a cross-cultural study was conducted with the participation of 2,854 people from countries in Latin America and Europe, with a retrospective correlational cross-sectional design and a convenience sample. Participants were divided between demonstration participants and non-demonstrators or followers who monitored participants through the media and social networks. Compared with non-demonstrators and with males, female and non-binary gender respondents had greater scores in mechanisms and criterion variables. Further random-effects model meta-analyses revealed that the perceived emotional synchrony was consistently associated with more proximal mechanisms, as well as with criterion variables. Finally, sequential moderation analyses showed that proposed mechanisms successfully mediated the effects of participation on every criterion variable. These results indicate that participation in 8M marches and demonstrations can be analyzed through the literature on collective rituals. As such, collective participation implies positive outcomes both individually and collectively, which are further reinforced through key psychological mechanisms, in line with a Durkheimian approach to collective rituals. (shrink)

Background: Undergraduate nursing students have been documented to experience ethical distress during their clinical training and felt poorly supported in discussing the ethical issues they encountered. Research aims: This study was aimed at exploring nursing students’ perceived opportunity to discuss ethical issues that emerged during their clinical learning experience and associated factors. Research design: An Italian national cross-sectional study design was performed in 2015–2016. Participants were invited to answer a questionnaire composed of four sections regarding: socio-demographic data, previous clinical learning (...) experiences, current clinical learning experience quality and outcomes, and the opportunity to discuss ethical issues with nurses in the last clinical learning experience. Participants and research context: Participants were 9607 undergraduate nursing students who were attending 95 different three-year Italian baccalaureate nursing programmes, located at 27 universities in 15 Italian regions. Ethical considerations: This study was conducted in accordance with the Human Subject Research Ethics Committee guidelines after the research protocol was approved by an ethics committee. Findings: Overall, 4707 perceived to have discussed ethical issues ‘much’ or ‘very much’; among the remaining, 3683 and 1217 students reported the perception of having discussed, respectively, ‘enough’ or ‘never’ ethical issues emerged in the clinical practice. At the multivariate logistic regression analysis explaining 38.1% of the overall variance, the factors promoting ethical discussion were mainly set at the clinical learning environment levels. In contrast, being male was associated with a perception of less opportunity to discuss ethical issues. Conclusion: Nursing faculties should assess the clinical environment prerequisites of the settings as a context of student experience before deciding on their accreditation. Moreover, the nursing faculty and nurse managers should also enhance competence with regard to discussing ethical issues with students among clinical nurses by identifying factors that hinder this learning opportunity in daily practice. (shrink)

Background: Psychological distress is common among patients with cancer, with severe consequences on their quality of life. Anxiety and depression are the most common clinical presentation of psychological distress in cancer patients, but in some cases cancer may represent a traumatic event resulting in posttraumatic stress disorder. Currently, Eye Movement Desensitization and Reprocessing therapy is considered an evidence-based treatment for PTSD, but recent studies also showed its effectiveness for anxiety and depression. The aim of the present systematic review is to (...) summarize the current literature on the effect of EMDR on cancer-related psychological distress.Methods: A literature search was conducted for peer-reviewed articles about “EMDR” and “cancer patients” in the following electronic databases: PubMed, MEDLINE, Science Direct, Google Scholar, and Cochrane library.Results: Our search identified 7 studies in which EMDR was used with a total of 140 cancer patients. The psychiatric diagnosis was PTSD in 3 studies. Otherwise, the diagnosis concerned the anxious and depressive disorder spectrum. Overall, EMDR treatment schedules used were highly heterogeneous, with a different number of sessions and a different duration of therapy. However, across all studies analyzed EMDR therapy was judged to be adequate in reducing symptoms of psychological distress in this population.Conclusions: According to the results of our analysis, the level of evidence regarding EMDR efficacy in cancer patients is limited by the scarcity of studies and their low methodological quality. Although better quality research is needed, available data suggest that EMDR could be a promising treatment for psychological distress in patients with cancer. (shrink)

During the perinatal period, the establishment of the attachment relationship with the fetus and subsequently with the real child is crucial for the parents' and the child's well-being. Coherently with the assumption that the attachment relationship starts to develop during pregnancy, this systematic review aims to analyze and systematize studies focused on the association between pre-natal attachment and parent-to-infant attachment, in order to clarify the emerging results and provide useful information for clinical purposes. Nineteen studies were included. Sixteen researches identified (...) a positive relationship between pre-natal attachment and parent-to-infant attachment, and three articles highlighted a negative association between antenatal attachment and post-partum bonding disorders. These results were found both in women and men, in normative and at-risk pregnancies, adopting different assessment approaches. However, only small or moderate associations were found. Future studies are needed to further confirm these findings across different populations and with different methodological approaches. Moreover, studies would be needed in order to clarify mechanisms through which pre-natal attachment influences parent-to-infant attachment, as well as protective and risk factors which intervene between these two variables. (shrink)

This experimental writing piece by the Earth Unbound Collective explores the ethical, political and pedagogical challenges in addressing climate change, activism and justice. The provocation Earth Unbound: the struggle to breathe and the creative thoughts that follow are inspired by the contagious energy of what Donna Haraway calls response-ability or the ability to respond. This energy ripples through monthly reading groups and workshops organised by this interdisciplinary collective that emerged organically in January 2020.

I discuss the role of translatability in philosophical justification. I begin by discussing and defending Thomas Reid’s account of the role that facts about comparative linguistics can play in philosophical justification. Reid believes that common sense offers a reliable but defeasible form of justification. We cannot know by introspection, however, which of our judgments belong to common sense. Judgments of common sense are universal, and so he argues that the strongest evidence that a judgment is a part of common sense (...) is that it is to be found in all languages. For Reid, then, evidence that a certain distinction is to be found in all languages is evidence that the distinction is part of common sense rather than being a common local prejudice. From such a perspective, empirical work in comparative linguistics can play a defeasible justificatory role in philosophical arguments. I contrast Reid’s position with the more radical position of defenders of the Natural Semantic Metalanguage approach, such as Anna Wierzbicka, who argues that only judgments that are translatable into all natural languages are justifiable. I show how such a position is rooted in an implausible view, although one common among cognitive scientists and linguistics, about the nature of concepts, which does not allow for novel concepts. (shrink)

Centred on the diaries of Violet Thompson and Betty Whitla-Lucas, this exploratory paper self-reflexively plots key feminist problematics of integrating the personal with scholarship, while also enacting and working them through. By addressing my own familial connection to the archive, I explore the experience of using personal material within scholarship. Considering the increased incorporation of personal narrative into feminist scholarship, I question what is at stake in the production and reception of women’s life-writing. I propose a model of motivation and (...) desire for the process of reading and writing of women’s life-narratives, probing the relationship of desire that exists between women. Returning to the archive, Violet’s and Betty’s records of pregnancy are read as sites of power relations, examining the existence of inter-discursive networks of empowerment that disrupt the dominant cultural precepts on female sexuality. In closing, I reflect upon the interplay of private fantasy with public history and imagine the potential for the disparate forms of women’s life-writing, not only as feminist interventions in the cultural field but as contributions to discussions on the nature of feminine inscriptions. (shrink)

The publication, first in German, then in the Italian translation, of the volume 60 of the Martin Heidegger’s Gesamtausgabe, which is devoted to a Phenomenology of the religious life, reopened the debate on the relationship between his thought and theology. The author reviews an essay by Luca Savarino, which reconstructs Heidegger’s reflection on Christianity from 1916 to 1927 and aims at defining its place in the development of his thought. Mirroring the thesis according to which an ontologization of Aristotelian (...) categories would happen in the existential analytics, the author argues that the ontological project of Sein und Zeit originates from a formalization and subsequent elevation to the ontological plan of some fundamental structures of life which reveal themselves in the Christian experience. (shrink)

The aim of this paper is to focus on Arne Nass’s phenomenological method and some of its anthropological and cosmological implications. Nass’s Ecology, Community and Lifestyle, in fact, can be fruitfully read as an example of phenomenological inquiry, in which the notion of “spontaneous experience” plays a fundamental role. This method leads Nass to develop a “relational ontology,” in which the “ecological self” is seen as a “relational junction within the total field.” In addition, I show how Tymieniecka’s philosophical thought (...) can offer us the proper eco-phenomenological perspective to better understand Nass’s Ecosophy T. (shrink)

What sort of claims do scientific models make and how do these claims then underwrite empirical successes such as explanations and reliable policy interventions? In this paper I propose answers to these questions for the class of models used throughout the social and biological sciences, namely idealized deductive ones with a causal interpretation. I argue that the two main existing accounts misrepresent how these models are actually used, and propose a new account. *Received July 2006; revised August 2008. †To contact (...) the author, please write to: Department of Philosophy, University of Missouri, St. Louis, 599 Lucas Hall (MC 73), One University Blvd., St. Louis, MO 63121-4400; e-mail: [email protected]. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:1 & 2 Thessalonians by Douglas FarrowAnna Silvas1 & 2 Thessalonians by Douglas Farrow (Grand Rapids, MI: Brazos, 2020), xx + 336 pp.1 and 2 Thessalonians are probably the very first written testimonies of early Christianity. When Paul wrote 1 Thessalonians in AD 50, Our Lord Jesus Christ had "accomplished his exodus in Jerusalem" (see Luke 9:31) not twenty years before. Here we find the paradosis of the (...) Mystery of Christ among the Gentiles, the first articulations of Trinitarian faith (see 1 Thess 1:2-5), expressions of longing for the coming Parousia of Christ, warnings of a strange lawlessness already at work ripening towards a great apostasy and the coming of the "man of lawlessness."Douglas Farrow has pondered 1 and 2 Thessalonians for many years, attested by his numerous expositions and essays over three decades. He brings to his task a ready command of Greek, Hebrew, and Latin, and a vast reading of historical commentary and controversy, an intense personal and ecclesial faith, and a sense of historical, prophetic, and pastoral urgency.Throughout the book are excurses on themes opened up by the words and phrases of St Paul's text: Satan (82-86); the sexual body and virtue in sex, divorce, and remarriage (95-114); the remedial pains of purgatory (beginning in this life); the reality of final retribution, the finality of hell; the untenability of so-called "universalism" (131-41,178-84,192-96); the imminency and the delay of the Parousia (199-204); the apostasy / man of lawlessness / Antichrist; the temple in which the Antichrist seats himself (205-42); the mystery of lawlessness at work, especially in undermining the Church (245-61).In studying Paul's eschatological themes, Farrow necessarily ponders other scriptural texts leading in the same direction: Dani 7-12; Jesus's Olivet Discourse in its most extensive form at Matt 24:1-25:46 (though it really begins at 23:23); 2 Pet 2:1-5, 3:3-15; much of the Rev 6:1 through 19:21; [End Page 398] Deut 32:1-43 (Farrow says the Song of Moses encapsulates the whole of human history); Psalms 97 (LXX 96); 110 (LXX 109); Wis 4-5, 10-19; Sirach 50; Joel; Zech 8-14; Mai 3-4; 2 Mace 5-9; Isa 66:5,14-16; and so on. Farrow holds that Paul worked from knowledge of Jesus's apocalyptic teachings in aversion closest to Matthew's (138,142,184, 189, 205).Farrow takes companions in his exegesis: Irenaeus, Hippolytus, Cyril of Jerusalem, John Chrysostom, Augustine, Haimo, Anselm, Aquinas, and others. He knows Luther's hermeneutics and Calvinist disputes about supra- and infra-sessionism and double predestinationism. He consults more recent prophets, quoting at length from Newman's amazingly prescient 1838 discourses on the last times, Solovyovin 1899, and Fulton Sheen in 1948 and 1958. Another exegete is an artist: Luca Signorelli, whose Disputation of the Antichrist in Orvieto Cathedral Farrow refers to several times.Farrow shows his affinity with Irenaeus. That means cleaving to the visible and invisible truths of the Incarnation of God the Word, respecting concrete and embodied realities, keeping in view the transcendent goal ("The glory of God is a living man—and the life of man is in the vision of God"), instinctively flinching at gnosticizing tendencies—sophisticated re-interpretations of Scripture that elide the rule of faith and dissolve truth. It means a ruling sense of the Kingdom of God as an intervention from heaven rather than generating from man or from the earth. It means a spirit of obedience to the commandments, to the paradosis that descends to us from above in Christ, effected by the Spirit in the ecclesia, the company of brethren destined to "gather to Christ" at his coming (1 Thess 2:1), who practice that final gathering to Christ by participating in the Eucharist on the "Eighth Day," the Lord's Day.Farrow deplores the patchy reading of 1 and 2 Thessalonians in the lectionaries: "While 1 Thessalonians fares a little better, barely half of 2 Thessalonians is read in the Churches" (11). Missing is the eschatologically pivotal 2 Thess 2:3-15, where Paul, distinguishing... (shrink)

Conceptual primitives and semantic universals are the cornerstones of a semantic theory which Anna Wierzbicka has been developing for many years. Semantics: Primes and Universals is a major synthesis of her work, presenting a full and systematic exposition of that theory in a non-technical and readable way. It delineates a full set of universal concepts, as they have emerged from large-scale investigations across a wide range of languages undertaken by the author and her colleagues. On the basis of empirical (...) cross-linguistic studies it vindicates the old notion of the "psychic unity of mankind", while at the same time offering a framework for the rigorous description of different languages and cultures. (shrink)

Translation of Aristotle's Parts of Animals Book I into Portuguese, with full commentaries.

The goal of this paper is to review and critically discuss the philosophical aspects of probabilistic seismic hazard analysis (PSHA). Given that estimates of seismic hazard are typically riddled with uncertainty, diferent epistemic values (related to the pursuit of scientifc knowledge) compete in the selection of seismic hazard models, in a context infuenced by non-epistemic values (related to practical goals and aims) as well. We frst distinguish between the diferent types of uncertainty in PSHA. We claim that epistemic and nonepistemic (...) considerations are closely related in the selection of the appropriate estimate of seismic hazard by the experts. Finally, we argue that the division of scientifc responsibility among the experts can lead to responsibility gaps. This raises a problem for the ownership of the results (“no one’s model” problem) similar to the “problem of many hands” in the ethics of technology. We conclude with a plea for a close collaboration between philosophy and engineering. (shrink)

This book discusses Aristotle’s notions of essence and substance as they are developed in Metaphysics ZH. I examine Aristotle's argument at length and defends an unorthodox interpretation according to which his motivation is to provide an answer against a conflation between criteria for existential priority (delivering substances as primary beings) and criteria for explanatory priority (delivering essences as primary principles).

Introduction 1. Language and meaning Nothing is as easily overlooked, or as easily forgotten, as the most obvious truths. The tenet that language is a tool ...

The aim of this paper is to clarify under what conditions a philosophical problem arises. I will describe two ways in which we might perceive a question as a problem. First, when we fnd ourselves inclined to believe in propositions that appear incompatible with each other. Second, when we fnd ourselves inclined to believe in propositions that seem incompatible with our desires. I will discuss both of these cases and articulate a didactic strategy – the Clash Strategy – which can (...) be used in order to plan and facilitate dialogic inquiry in the classroom. This strategy suggests introducing stimuli that will help students appreciate the clash that drives the philosophical question to be explored during the dialogue. In summary, this paper aims to ofer insights to all teachers interested in promoting dialogic inquiry, whether philosophical or otherwise, in education. (shrink)

Translation of Aristotle's Physics I-II into Portuguese, with commentaries. Tradução para o português dos livros I e II da Física de Aristóteles, com comentários.

Making decisions can be tough, but how do you know it s the right one and how can you be sure that unconscious biases aren t distorting your thinking? In Risky Business, Anna Withers and Mark Withers draw on decades of research in the fields of psychology, behavioral economics and neuroscience to explain why are so-called rational brains are frequently fooled by over 100 powerful unconscious biases. At the same time they provide a straightforward framework everyone can use, where (...) these biases are embodied into eight memorable characters that help us to avoid these pitfalls and make better decisions.". (shrink)

This article investigates the challenges posed by the reliability of knowledge in neurophenomenology and its connection to reality. Neurophenomenological research seeks to understand the intricate relationship between human consciousness, cognition, and the underlying neural processes. However, the subjective nature of conscious experiences presents unique epistemic challenges in determining the reliability of the knowledge generated in this research. Personal factors such as beliefs, emotions, and cultural backgrounds influence subjective experiences, which vary from individual to individual. On the other hand, scientific knowledge (...) aims to uncover universal truths based on empirical observations and objective principles. Reconciling the subjective and objective realms presents a significant challenge in determining the reliability of knowledge generated through neurophenomenological research. This article aims to examine the inherent limitations and challenges of neurophenomenological research to shed light on the complexities involved in understanding the nature of knowledge itself. This article highlights that the ontological implications of the reliability of knowledge in neurophenomenology arise from the question of how subjective experiences relate to objective reality. Understanding the neural correlates and mechanisms behind subjective experiences can provide insight into the underlying ontological nature of consciousness. (shrink)

This is an introductory handbook for some of the main themes around the notion of predication in Aristotle. It does not aim at being exhaustive, but only sketches some important lines about the subject; it contains an introductory essay, besides the translation (into Portuguese) and commentary of basic texts (such as Posterior Analytics I-22, Categories 1-5, Interpretation 1-6 etc.).

Translation of Aristotle's Posterior Analytics I into Portuguese, with a few notes, experimental glossary and introduction. The translation, which was made at 2003/4, was preliminary and its publication was intended to provide a didactic tool for courses as well as a provisional resource in research seminars. It needs some revision. I am currently working (slowly...) on the revision of the translation and a new revised one will surely appear at some point.

Translation of Aristotle's Metaphysics IV and VI, with notes. The translation is preliminary and intended as a provisional teaching tool to be also used in seminars and discussions with peers in order to reach a more elaborated version.

I discuss some of Aristotle’s scattered remarks from which one can construct his conception of matter. Aristotle seems to oscillate between two conceptions: one in which matter is the principle of becoming, another in which matter is a constituent element with no contribution for processes of becoming. Sometimes Aristotle takes matter as a thing independent in itself, and the correlated form is a feature that does not contribute to the matter’s essence, nor is a necessary condition for its existence. But (...) sometimes Aristotle takes matter as a constituent element the existence of which depends on the whole thing it is the matter of. These different approaches to matter seem to suggest an inconsistent theory of matter. However, I argue that, quite to the contrary, Aristotle has a consistent theory about matter. One of my main points is to distinguish contexts in which Aristotle is indeed talking about matter in general from contexts in which he uses the term “matter” to refer to a given thing that was previously taken as matter and to talk about that thing not qua matter, but qua the thing it is. (shrink)

Translation of Aristotle's Posterior Analytics II into Portuguese, with a few notes, experimental glossary and introduction. The translation, which was made at 2002 (with a new printing in 2004), was preliminary and its publication was intended to provide a didactic tool for courses as well as a provisional resource in research seminars. It needs some revision. I am currently working (slowly...) on the revision of the translation and a new revised one will surely appear at some point.

Translation of Aristotle's Metaphysics I-III into Portuguese, with a few notes and introduction. The translation, which was made at 2007, is preliminary and its publication was intended to provide a didactic tool for courses as well as a provisional resource in research seminars. It needs some revision. I am currently working (slowly...) on the revision of the translation and a new revised one will surely appear at some point.

I discuss what Aristotle means when he say that scientific demonstration must proceed from necessary principles. I argue that, for Aristotle, scientific demonstration should not be reduced to sound deduction with necessary premises. Scientific demonstration ultimately depends on the fully appropriate explanatory factor for a given explanandum. This explanatory factor is what makes the explanandum what it is. Consequently, this factor is also unique. When Aristotle says that demonstration must proceed from necessary principles, he means that each demonstration requires the (...) principle that is the necessary one for the fully appropriate explanation of its explanandum. This picture also provides a key to understand Aristotle's thesis that scientific explanation depends on essences: it is the essence of the attribute to be explained that should be stated as the fully appropriate explanatory factor. (shrink)