The aim of this article is to sketch the procedural nature of the modus in which Deleuze reads the other philosophers. The hermeneutical problem indicated by the indecision to consider his books on different authors as an authorized interpretation or as fantasist utilization may be scattered if we understand his hermeneutical attempts both as interpretation and construction. In addition, this indecision affects the guild of Deleuzian exegetes in respect to the directory idea which could point out the general strategy of (...) his philosophy. (shrink)

This paper aims to clarify the program of Deleuze’s work on Hume’s philosophy. Also, I plan to make clear the operational meaning of Deleuze’s own hallmark regarding his approaches to philosophy. I start to follow Deleuze’s plot by engendering three functions of his interpretation of Hume’s Treatise that will be the area of three thematic chapters. The first tries to sort the polemical function of empiricism that is launched through Deleuze’s Hume; the second attempts to figure the domain of subjectivity (...) as the inventive function of the book; the third searches the creative function by describing the role of the institutional theory. (shrink)

Starting from the assumption that everything is measured in this world, the author sets out to ask some questions about the value and the measure of the human soul and postulates that we should distinguish between an earthly measure and a divine measure of the soul. He concludes that the “positive” measure of the soul is acquired according to its redemption and salvation for the eternal life, because a saved soul is worthier than the whole world.

Despite the promise to boost human potential and wellbeing, enhancement drugs face recurring ethical scrutiny. The present studies examined attitudes toward cognitive enhancement in order to learn more about these ethical concerns, who has them, and the circumstances in which they arise. Fairness-based concerns underlay opposition to competitive use—even though enhancement drugs were described as legal, accessible and affordable. Moral values also influenced how subsequent rewards were causally explained: Opposition to competitive use reduced the causal contribution of the enhanced winner’s (...) skill, particularly among fairness-minded individuals. In a follow-up study, we asked: Would the normalization of enhancement practices alleviate concerns about their unfairness? Indeed, proliferation of competitive cognitive enhancement eradicated fairness-based concerns, and boosted the perceived causal role of the winner’s skill. In contrast, purity-based concerns emerged in both recreational and competitive contexts, and were not assuaged by normalization. (shrink)

There is a tendency to use data from neuroscience, cognitive science and experimental psychology to rail against philosophical ethics. Recently, Joshua Greene has argued that deontological judgments tend to be supported by emotional responses to irrelevant features, whereas consequentialist judgments are more reliable because they tend to be supported by cognitive processes. In this article, I will analyse the evidence used by Greene to suggest a different kind of argument against deontology, which I will call the argument from self-defeating beliefs. (...) The charge of this type of argument amounts to exposing a psychological nature of deontological judgements that is supposedly rejected by deontologists. I will argue that the alleged evidence is poorly understood, mixed and indeterminate, failing to endorse general conclusions about the psychological processes underlying deontological judgements. (shrink)

Should the development of pharmacological cognitive enhancers raise worries about doping in cognitively demanding activities? In this paper, we argue against using current evidence relating to enhancement to justify a ban on cognitive enhancers using the example of chess. It is a mistake to assume that enhanced cognitive functioning on psychometric testing is transferable to chess performance because cognitive expertise is highly complex and in large part not merely a function of the sum specific sub-processes. A deeper reason to doubt (...) that pharmacological cognitive enhancers would be as significant in mind sports is the misleading parallel with physical enhancement. We will make the case that cognitive performance is less mechanical in nature than physical performance. We draw lessons from this case example of chess for the regulation of cognitive enhancement more generally in education and the professions. Premature regulation runs the risk of creating a detrimental culture of suspicion that ascribes unwarranted blame. (shrink)

Joshua Greene has put forward the bold empirical hypothesis that deontology is a confabulation of moral emotions. Deontological philosophy does not steam from "true" moral reasoning, but from emotional reactions, backed up by post hoc rationalizations which play no role in generating the initial moral beliefs. In this paper, I will argue against the confabulation hypothesis. First, I will highlight several points in Greene’s discussion of confabulation, and identify two possible models. Then, I will argue that the evidence does not (...) illustrate the relevant model of deontological confabulation. In fact, I will make the case that deontology is unlikely to be a confabulation because alarm-like emotions, which allegedly drive deontological theorizing, are resistant to be subject to confabulation. I will end by clarifying what kind of claims can the confabulation data support. The upshot of the final section is that confabulation data cannot be used to undermine deontological theory in itself, and ironically, if one commits to the claim that a deontological justification is a confabulation in a particular case, then the data suggests that in general deontology has a prima facie validity. (shrink)

Moral outrage is often characterized as a corrosive emotion, but it can also inspire collective action. In this article we aim to deepen our understanding of the dual nature of online moral outrage which divides people and contributes to inclusivist moral reform. We argue that the specifics of violating different types of moral norms will influence the effects of moral outrage: moral outrage against violating harm-based norms is less antagonistic than moral outrage against violating loyalty and purity/identity norms. We identify (...) which features of social media platforms shape our moral lives. Connectivity, omniculturalism, online exposure, increased group identification and fostering what we call “expressionist experiences”, all change how moral outrage is expressed in the digital realm. Finally, we propose changing the design of social media platforms and raise the issue of moral disillusion when ample moral protest in the online environment does not have the expected effects on the offline world. (shrink)

This article pulls together the disjointed complexification of security studies. Such analytical overview suggests that the perspective of “timescapes” allows for exploring the complexity that shapes meanings and practices of security and its governance. In this respect, it is the imperative to change that suggests the significance of complexity thinking to security studies—that is, it is alone in taking the discontinuities of global life seriously. Security, in this regard, is not merely about the clockwork of survival, but is redefined through (...) the cloudlike adaptive contingency of “security as resilience.” In this setting, the security governance of complexity is identified through its dancing to the timescaped rhythms of uncertainty, cognitive challenges, complex risks, and exaptation prompted by the heterogeneity of global life. (shrink)

For a theory T, we study relationships among IΔ n +1 (T), LΔ n+1 (T) and B * Δ n+1 (T). These theories are obtained restricting the schemes of induction, minimization and (a version of) collection to Δ n+1 (T) formulas. We obtain conditions on T (T is an extension of B * Δ n+1 (T) or Δ n+1 (T) is closed (in T) under bounded quantification) under which IΔ n+1 (T) and LΔ n+1 (T) are equivalent. These conditions depend (...) on Th Πn +2 (T), the Π n+2 –consequences of T. The first condition is connected with descriptions of Th Πn +2 (T) as IΣ n plus a class of nondecreasing total Π n –functions, and the second one is related with the equivalence between Δ n+1 (T)–formulas and bounded formulas (of a language extending the language of Arithmetic). This last property is closely tied to a general version of a well known theorem of R. Parikh. Using what we call Π n –envelopes we give uniform descriptions of the previous classes of nondecreasing total Π n –functions. Π n –envelopes are a generalization of envelopes (see [10]) and are closely related to indicators (see [12]). Finally, we study the hierarchy of theories IΔ n+1 (IΣ m ), m≥n, and prove a hierarchy theorem. (shrink)

Parents frequently attempt to shield their children from distressing prognostic information. Pediatric oncology providers sometimes follow parental request for non-disclosure of prognostic information to children, invoking what we call the stability of the family argument. They believe that if they inform the child about terminal prognosis despite parental wishes, cohesion and family structure will be severely hampered. In this paper, we argue against parental request for non-disclosure. Firstly, we present the stability of the family argument in more detail. We, then, (...) set out the (conceptual, legal, systemic) entitativity of the family and the kind of value the stability of the family argument assumes, before we set on to critically evaluate the argument. Our analysis shows that disclosure of prognostic information to children does not necessarily destabilize the family to a greater extent than non-disclosure. In fact, a systemic perspective suggests that mediated disclosure is more likely to result in a (long-term) stability of the family than non-disclosure. It is in the interest of the family to resist the initial aversive reaction to delivering bad news. In the final part, we draw a set of recommendations on how to facilitate decision-making in face of parental request for non-disclosure. (shrink)

To capture genuine utilitarian tendencies, (Kahane et al., Psychological Review 125:131, 2018) developed the Oxford Utilitarianism Scale (OUS) based on two subscales, which measure the commitment to impartial beneficence and the willingness to cause harm for the greater good. In this article, I argue that the impartial beneficence subscale, which breaks ground with previous research on utilitarian moral psychology, does not distinctively measure utilitarian moral judgment. I argue that Kantian ethics captures the all-encompassing impartial concern for the well-being of all (...) human beings. The Oxford Utilitarianism Scale draws, in fact, a point of division that places Kantian and utilitarian theories on the same track. I suggest that the impartial beneficence subscale needs to be significantly revised in order to capture distinctively utilitarian judgments. Additionally, I propose that psychological research should focus on exploring multiple sources of the phenomenon of impartial beneficence without categorizing it as exclusively utilitarian. (shrink)

The prospect of cognitive enhancement well beyond current human capacities raises worries that the fundamental equality in moral status of human beings could be undermined. Cognitive enhancement might create beings with moral status higher than persons. Yet, there is an expressibility problem of spelling out what the higher threshold in cognitive capacity would be like. Nicholas Agar has put forward the bold claim that we can show by means of inductive reasoning that indefinite cognitive enhancement will probably mark a difference (...) in moral status. The hope is that induction can determine the plausibility of post‐personhood existence in the absence of an account of what the higher status would be like. In this article, we argue that Agar's argument fails and, more generally, that inductive reasoning has little bearing on assessing the likelihood of post‐personhood in the absence of an account of higher status. We conclude that induction cannot bypass the expressibility problem about post‐persons. (shrink)

In this paper we develop test cases to adjudicate between dual-process and the causal mapping explanations of order effects. Using dilemmas with minimized emotional force, we explore new conditions for order effects to occur. Overall, the results support causal model theory. We produced novel evidence that order effects extend not only to cases with low emotional engagement, but also to specialized judgments about whether an action violates a rule. However, when objects are sacrificed instead of persons the order effect either (...) disappears or becomes symmetrical, contrary to previous theorizing that it is an asymmetrical transfer effect. Causal model theory needs to be developed to include interplays between the moral status of sacrificed entities and computational models of causal mapping. Symmetric order effects remain a puzzle, motivating future research. Though we do not know how to explain them yet, we discuss how symmetric order effects can influence policy decision making. (shrink)

Contemporary critical space theories as well as singular architectural experiments acknowledge a quest for renewing the most significant ways in which space design is conceptually elaborated, factually realised and socially perceived. Searching to seize the possibility and the meaning of a creative intervention in space-related practices, the paper aims at revisiting the manner in which modern times determined the relationship between architectural production and politics. The main reason is that this sequence of the argument allows for a more accurate definition (...) of transformations that build up contemporary experience and especially the ways in which common creative practices totally abandon existential and political concerns. We argue that a specific comprehension of anarchitecture in ontological terms could shed a new light on creative architectural gestures. Anarchitecture, as we understand it, interrupts the logic of manifestos, which distinguishes it from oppositional architecture. In supporting the idea that experienced spaces are more that mere reified presences, involved as they are in shaping and determining meaning, our approach is not prescriptive but, quite on the contrary, attempts to empirically construct minimal orientations for thought and practice. (shrink)

This text is an examination of the democratic public sphere in relation to the presently dominating crisis discourse. More precisely, we endeavor to expose assumptions, aims and consequences entailed by the discourse of crisis, hereafter considered as a rhetorical apparatus asserting that crisis reveals an unambiguous and mandatory nature of things imposing self-evident and thus non deliberative decisions concerning both singular existence and communities. The crisis discourse serves to endorse indisputable certainty and therefore to blur or even suppress indeterminacy. Nevertheless, (...) and it is our guiding allegation formulated mainly in reference to Claude Lefort’s political thought, the possibility of democracy and of its public sphere depends constitutively on a unique indeterminacy. Our analysis proves that restoring certainty cannot but go along with a naturalist fallacy and an abuse of rhetoric power postponing deliberative-shaped democratic practices. This line of reasoning comes to define public sphere as a rhetorical counter-power strategy meant to reassert democratic indeterminacy. (shrink)

Cette contribution entend rendre compte de l’actualité de la pensée de Michel Foucault à travers une analyse du concept de bio-politique. L’étude vise l’émergence historique et celle discursive de la bio-politique, essayant d’insister sur le rapport étroit entre la mutation à travers laquelle la politique se donne comme objet la vie en tant que telle et l’émergence du capitalisme en tant que paradigme dominant de la modernité. Ce faisant, l’analyse s’inscrit dans un horizon herméneutique plus large des Temps modernes.

The five articles composing the thematic dossier Rhetorics of Justice in Emerging Democracies represent the initial results of the joint Romanian and South African research project – Rhetoric of Justice and Deliberative Perceptions of the Rule of Law in Post-Communist Romania and Post-Apartheid South Africa.

We propose hereafter an analysis of the way in which the post-communism has determined the significance of justice and, in doing so, pretended to reorganize the possibility for a legitimate political community. Given that the public perception points out to a gap between the rule of law and justice, one should understand for what reasons. Does the rule of law have the resources for doing justice? Are the legal procedures enough? Or should we take into consideration the possibility that the (...) rule of law is unable to do justice? Subsequently, we identify and discuss three radicalizations: the issue of normativity, the rogue state and the heterogeneity between law and justice. Ultimately, the possibility of justice depends on a different way of thinking democracy. (shrink)

In this paper we deal with some new axiom schemes for Peano's Arithmetic that can substitute the classical induction, least-element, collection and strong collection schemes in the description of PA.

We study the quantifier complexity and the relative strength of some fragments of arithmetic axiomatized by induction and minimization schemes for Δn+1 formulas.

We study the quantifier complexity and the relative strength of some fragments of arithmetic axiomatized by induction and minimization schemes for Δn+1 formulas.

We propose to expand the conversation around moral enhancement from direct brain-altering methods to include technological means of modifying the environments and media through which agents can achieve moral improvement. Virtual Reality (VR) based enhancement would not bypass a person’s agency, much less their capacity for reasoned reflection. It would allow agents to critically engage with moral insights occasioned by a technologically mediated intervention. Users would gain access to a vivid ‘experience machine’ that allows for embodied presence and immersion in (...) a virtual world that meaningfully replicates relevant aspects of real life. We explore how VR can train empathy and foster moral growth in complex ways that would be inaccessible even for traditional moral education. Virtual Reality Perspective Taking is a unique medium for making empathy more reflective. (shrink)

În acest studiu, îmi propun să arăt că modelul social intuiţionist al judecăţii morale propus de Haidt este la rândul său prea restrictiv faţă de influenţa raţionării morale, poate tot aşa cum modelul raţionalist subestima influenţa emoţiilor morale. Mai întâi, voi prezenta modelul raţionalist despre natura judecăţii morale şi voi evidenţia rezultatele empirice care au contribuit la erodarea sa. Apoi, voi prezenta şi critica modelul social intuiţionist revigorat de revoluţia „afectivă” din psihologia morală, argumentând că rezultatele din psihologia experimentală, neuroştiinţă (...) şi psihologia evoluţionistă acordă raţionării morale o influenţă cauzală mai mare decât admite Haidt. (shrink)

The aim of this paper is to argue that intuitive methods of moral decision making are objective tools on the grounds that they are reasons based. First, I will conduct a preliminary analysis in which I highlight the acceptance of methodological pluralism in the practice of medical ethics. Here, the point is to show the possibility of using intuitive methods given the pluralism framework. Second, I will argue that the best starting point of elaborating such methods is a bottom-up perspective. (...) Third, I will address the worry of subjectivism. Under the influence of certain rationalist positions and recent developments in cognitive science and moral psychology, one might think that intuitive methods of moral decision making are essentially subjective and emotion based. If moral intuitions are the result of emotional reactions and intuitive reasoning is emotionally driven, then there are reasons to believe intuitive methods are subjective and relative to particular psychological constitution. Against this picture, I will argue that intuitive methods of moral decision making are essentially reasons-based. A Wittgensteinian approach will show that intuitive methods of moral decision making are conceptually linked with criteria of morality. (shrink)

In acest articol voi intreprinde o analiza conceptuala asupra formei si a continutului codului deontologic al farmacistilor din Romania din perspectiva expertizei etice. Voi atrage atentia asupra necesitatii de a distinge intre obligatii morale si alte tipuri de normativitate. Dupa analiza diferitelor modele de redactare a codurilor de etica, voi evidentia doua exigente metodologice pe care ar trebui să le satisfaca un cod deontologic. In final, voi puncta cateva provocari pentru managementul eticii farmaceutice.

We study the theories I∇n, L∇n and overspill principles for ∇n formulas. We show that IEn ⇒ L∇n ⇒ I∇n, but we do not know if I∇n L∇n. We introduce a new scheme, the growth scheme Crγ, and we prove that L∇n ⇒ Cr∇n⇒ I∇n. Also, we analyse the utility of bounded collection axioms for the study of the above theories.

How do we make good moral decisions? There is a tendency to answer this question by developing methods and procedures of moral decision making. In this paper I will show some limits and pitfalls of this approach. Good moral decisions need to take into account factors which cannot be codified into procedures. I draw attention to how analyzing the type of context is a necessary preamble for a better handling of procedures.

Many natural scientists explain the evolutionary origin of morality by documenting altruistic behaviour in our nearest nonhuman relatives. Christine Korsgaard has criticized such attempts on the premise that they do not put enough effort in explaining the capacity to be motivated by normative thoughts. She speculates that normative motivation may have originated with the internalization of the dominance instincts. In this article I will challenge the dominance hierarchy hypothesis by arguing that a proper investigation into how and when dominance inhibits (...) behaviour does not seem to reveal a minimal normative dimension. (shrink)

Many Kantian scholars have debated what normative guidance the formula of the law of nature provides. There are three ways of understanding the role of FLN in Kant’s ethics. The first line of interpretation claims that FLN and FLU are logically equivalent. The second line claims that there are only subjective differences, meaning that FLN is easier to apply than the abstrct method of FUL. The third line of interpretation claims that there are objective differences between FLN and FUL in (...) the sense that each formula has an irreducible role in Kant’s ethics. In this article I will show that the first and second lines of interpretation cannot fully explain Kant’s account of FLN and I will propose a new interpretation which pertains to the third type. I will explore the schematism model to understand the role of FLN and argue that it is an intermediary principle that fills in a practical gap between the moral law and action. In the end, I will consider a possible objection against this understanding which claims that the schematism model is not applicable to practical judgment since nothing is given in experience. (shrink)

„E o plăcere să citeşti o carte filosofică în care este atât de evidentă preocuparea autorului pentru a se face cât mai bine înţeles, iar rezultatele sunt pe măsura acestei preocupări. Sobrietatea scrierii este, în acest caz, expresia unei onestităţi intelectuale lipsite de cusur. Sunt atribute, din păcate mai rar întâlnite, care constituie apanajul acelora care îşi pot permite să renunţe la orice încercări de a-şi impresiona cititorii prin efecte exterioare. şi aceasta deoarece ei pot convinge pe deplin numai şi (...) numai prin substanţa ideilor şi forţa argumentelor.” Mircea Flonta. (shrink)

This article reviews Confucianism and Reflexive Modernity: Bringing Community back to Human Rights in the Age of Global Risk Society 978-90-0435255-1.

The Rashomon effect – a phenomenon studied in the arts and social sciences – occurs when the same event is given contradictory interpretations by different individuals involved. The effect was named after Akira Kurosawa's 1950 film Rashomon, in which a murder is described in four contradictory ways by four witnesses. In the film, a samurai has been killed under mysterious circumstances. Four people give contradictory reports about the crime. In particular, the samurai's wife claims that she was sexually abused by (...) a bandit, fainted, and then awoke to find her husband dead; the bandit claims that he seduced the wife and challenged the samurai in a battle to victory or at least to an honorable death; the woodcutter (who may have been an onlooker) claims that he witnessed the rape and murder but was not involved; and the dead samurai's spirit claims that he committed suicide. The Rashomon effect is not only about constructing different versions of the world based on differences in perspective; it occurs when such differences appear together with the absence of evidence to assess any version of the truth, plus “the social pressure for closure on the question.” In this commentary, we describe the relevance of the Rashomon effect beyond the arts and social sciences, namely in the field of biology. We use examples from redox biology, which is full of contradictions, thus making it fertile ground on which to apply reasoning derived from the Rashomon effect. (shrink)

We characterize the sets of all Π2 and all equation image theorems of IΠ−1 in terms of restricted exponentiation, and use these characterizations to prove that both sets are not deductively equivalent. We also discuss how these results generalize to n > 0. As an application, we prove that a conservation theorem of Beklemishev stating that IΠ−n + 1 is conservative over IΣ−n with respect to equation image sentences cannot be extended to Πn + 2 sentences. © 2011 WILEY-VCH Verlag (...) GmbH & Co. KGaA, Weinheim. (shrink)

By a theorem of R. Kaye, J. Paris and C. Dimitracopoulos, the class of the Πn+1-sentences true in the standard model is the only consistent Πn+1-theory which extends the scheme of induction for parameter free Πn+1-formulas. Motivated by this result, we present a systematic study of extensions of bounded quantifier complexity of fragments of first-order Peano Arithmetic. Here, we improve that result and show that this property describes a general phenomenon valid for parameter free schemes. As a consequence, we obtain (...) results on the quantifier complexity, finite axiomatizability and relative strength of schemes for Δn+1-formulas. (shrink)

The debate about how neurotechnologies impact authenticity has focused on two inter-related dimensions: self-discovery and self-creation. In this paper, we develop a broader framework that includes the experimental and relational dimensions of authenticity, both understood as decisive for shaping one’s narrative identity. In our view, neurointerventions that alter someone’s personality traits will also impact her very own self-understanding across time. We argue that experimental authenticity only needs a minimum conception of narrative coherence of the self and that reversibility should remain (...) a key feature in the ethical assessment of neurotechnologies. The relational dimension of authenticity derives from the fact that a process of self-constitution is never a solitary business. The significant others act not just as subsequent judges of one’s life decisions, but as real co-authors of one’s self. We discuss relevant cases in which others are actively contributing to the meaning-making process, as to the direction one’s life is taking. We also claim that the experimental and the relational dimensions of authenticity should aim to correct each other. The relational dimension introduces socially approved standards as well as limitations to the array of available possibilities of self-fashioning or human enhancement. The experimental side enables us to avoid confusing one’s personal identity with a social and narrative construct that only bears the mark of social pressure and conformism. (shrink)

This paper investigates the status of the fragments of Peano Arithmetic obtained by restricting induction, collection and least number axiom schemes to formulas which are Δ1\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\Delta_1}$$\end{document} provably in an arithmetic theory T. In particular, we determine the provably total computable functions of this kind of theories. As an application, we obtain a reduction of the problem whether IΔ0+¬exp\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${I\Delta_0 + \neg \mathit{exp}}$$\end{document} implies BΣ1\documentclass[12pt]{minimal} (...) \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${B\Sigma_1}$$\end{document} to a purely recursion-theoretic question. (shrink)

In this paper we continue the study of the theories IΔ n+1 (T), initiated in [7]. We focus on the quantifier complexity of these fragments and theirs (non)finite axiomatization. A characterization is obtained for the class of theories such that IΔ n+1 (T) is Π n+2 –axiomatizable. In particular, IΔ n+1 (IΔ n+1 ) gives an axiomatization of Th Π n+2 (IΔ n+1 ) and is not finitely axiomatizable. This fact relates the fragment IΔ n+1 (IΔ n+1 ) to induction (...) rule for Δ n+1 –formulas. Our arguments, involving a construction due to R. Kaye (see [9]), provide proofs of Parsons’ conservativeness theorem (see [16]) and (a weak version) of a result of L.D. Beklemishev on unnested applications of induction rules for Π n+2 and Δ n+1 formulas (see [2]). (shrink)

A well known theorem proved by J. Paris and H. Friedman states that BΣn +1 is a Πn +2-conservative extension of IΣn . In this paper, as a continuation of our previous work on collection schemes for Δn +1-formulas , we study a general version of this theorem and characterize theories T such that T + BΣn +1 is a Πn +2-conservative extension of T . We prove that this conservativeness property is equivalent to a model-theoretic property relating Πn-envelopes and (...) Πn-indicators for T . The analysis of Σn +1-collection we develop here is also applied to Σn +1-induction using Parsons' conservativeness theorem instead of Friedman-Paris' theorem.As a corollary, our work provides new model-theoretic proofs of two theorems of R. Kaye, J. Paris and C. Dimitracopoulos : BΣn +1 and IΣn +1 are Σn +3-conservative extensions of their parameter free versions, BΣ–n +1 and IΣ–n +1. (shrink)