Empirical Progress Research Articles

Swordtail fish hybrids reveal that genome evolution is surprisingly predictable after initial hybridization.

Over the past 2 decades, biologists have come to appreciate that hybridization, or genetic exchange between distinct lineages, is remarkably common-not just in particular lineages but in taxonomic groups across the tree of life. As a result, the genomes of many modern species harbor regions inherited from related species. This observation has raised fundamental questions about the degree to which the genomic outcomes of hybridization are repeatable and the degree to which natural selection drives such repeatability. However, a lack of appropriate systems to answer these questions has limited empirical progress in this area. Here, we leverage independently formed hybrid populations between the swordtail fish Xiphophorus birchmanni and X. cortezi to address this fundamental question. We find that local ancestry in one hybrid population is remarkably predictive of local ancestry in another, demographically independent hybrid population. Applying newly developed methods, we can attribute much of this repeatability to strong selection in the earliest generations after initial hybridization. We complement these analyses with time-series data that demonstrates that ancestry at regions under selection has remained stable over the past approximately 40 generations of evolution. Finally, we compare our results to the well-studied X. birchmanni × X. malinche hybrid populations and conclude that deeper evolutionary divergence has resulted in stronger selection and higher repeatability in patterns of local ancestry in hybrids between X. birchmanni and X. cortezi.

Pattern Theory of Selflessness: How Meditation May Transform the Self-Pattern

For many centuries, scholars and philosophers from wisdom traditions in different cultures have reported and discussed non-self states of consciousness. These states can be both short-term (state, transitory) and long-term (trait, lasting) conditions. However, in psychology, the importance of a healthy self is usually emphasized, and some theorists have dismissed the idea of “selfless” modes of functioning. This disagreement hinders further empirical progress in the study of self and the way it might be affected by meditation. This paper addresses this issue by providing an interdisciplinary conceptual discussion, grounded in the pattern theory of self (PTS). According to PTS, what we call “self” is a complex pattern of dynamically related constituent processes, which include embodied, experiential (prereflective), affective, psychological/cognitive, reflective, narrative, intersubjective, ecological, and normative processes. We propose that Buddhist and secular meditative practices induce a reorganization of the self-pattern, allowing individuals to experience a “selfless” state, both temporarily and persistently. We then put forward a heuristic model, the pattern theory of selflessness (PTSL), possibly experienced through meditation practices. The proposed PTSL model consists of six transformations that contribute to self-pattern reorganization in a nonlinear and iterative manner: consolidating and integrating the self-pattern; cultivating concentration and present-moment awareness; cultivating mindful awareness; self-deconstruction (non-self) states; self-flexibility; and self-liberation as a trait. This conceptual analysis and integrative view contributes to the growing field of consciousness and contemplative research by advancing the contemporary understanding of non-self experience and its relation to Buddhist and secular meditation. The proposed model serves as a basis for interdisciplinary efforts to guide empirical research in this area.

Measuring Rational Thinking in Adolescents: The Assessment of Rational Thinking for Youth (ART‐Y)

ABSTRACTThere has been considerable conceptual and empirical progress on the measurement of rational thinking in adult samples. Studies in developmental samples have demonstrated that many of these domains and paradigms can also be assessed in children and youth, especially in adolescent samples. Here, we present an efficient rationality assessment battery for adolescents and youth—the Assessment of Rational Thinking for Youth (ART‐Y). The ART‐Y consists of five subtests: Probabilistic and Statistical Thinking, Scientific Thinking, Avoidance of Framing, Knowledge Calibration, and Rational Temporal Discounting. Two supplementary measures of thinking dispositions are included in the ART‐Y: Actively Open‐Minded Thinking (AOT) and Deliberative Thinking. The ART‐Y battery was examined in a sample of 143 adolescents (mean age = 15.4 years). The five rational thinking subtests displayed intercorrelations largely consistent with those obtained in the adult literature. Age, cognitive ability, problem solving, probabilistic numeracy, and thinking dispositions predicted variance differently across the five subtests of the ART‐Y, but again largely consistent with the adult literature. These measures, along with the ART‐Y subtests, were examined as predictors of two real‐world skills: financial literacy and academic achievement. Scientific thinking, knowledge calibration, and rational temporal discounting were significant unique predictors of financial literacy when statistically controlling for cognitive ability. Scientific thinking predicted academic achievement when statistically controlling for cognitive ability.

Distinguishing four types of Person × Situation interactions: An integrative framework and empirical examination.

People differ in their reaction to situations, resulting in Person × Situation interactions. These interactions have been emphasized by many theoretical accounts of personality. Nevertheless, empirical progress on Person × Situation interactions has been slow. This is in part attributable to an insufficient distinction of person and situation variables and of different types of interaction effects. We propose a framework distinguishing four nested types of interaction effects varying in specificity: (a) P × S: broad Person × Situation interaction variance, (b) P × Sspec: between-person differences in situation variable-outcome associations, (c) Pspec × S: between-situation differences in person variable-outcome associations, and (d) Pspec × Sspec: specific Person Variable × Situation Variable interactions. We conducted two large online studies (N = 622 and N = 818) with standardized situation stimuli (N = 62 pictures and N = 62 first-person perspective videos) and assessed Big Five traits, DIAMONDS situation characteristics, and Big Five states. Using preregistered multilevel models, we systematically quantified the different interaction types. We found (a) large Person × Situation interaction variance in personality states, (b) sizable individual differences in situation characteristic-state contingencies, (c) consistent but smaller between-situation differences in trait-state associations, and (d) some significant but (very) small Personality Trait × Situation Characteristic interactions. Our findings highlight Person × Situation interactions as potentially important predictors of psychological states, although the explanation of these interactions through specific person variables remains difficult. Individual differences in the reaction to situations should be incorporated into our models of personality. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Progress in Understanding Consciousness? Easy and Hard Problems, and Philosophical and Empirical Perspectives

AbstractDavid Chalmers has distinguished the “hard” and the “easy” problem of consciousness, arguing that progress on the “easy problem”—on pinpointing the physical/neural correlates of consciousness—will not necessarily involve progress on the hard problem—on explaining why consciousness, in the first place, emerges from physical processing. Chalmers, however, was hopeful that refined theorizing would eventually yield philosophical progress. In particular, he argued that panpsychism might be a candidate account to solve the hard problem. Here, I provide a concise stock-take on both the empirical-neuroscientific and philosophical-conceptual progress on consciousness. It turns out that, whereas empirical progress is indisputable, philosophical progress is much less pronounced. While Chalmers was right, I argue, in distinguishing distinctive types of problems of consciousness, his prediction of progress on the hard problem was overly optimistic. Empirical progress and philosophical progress are essentially uncoupled; a more skeptical perspective on progress in philosophy in general is appropriate.

Reasoning with Concepts: A Unifying Framework

Over the past few decades, cognitive science has identified several forms of reasoning that make essential use of conceptual knowledge. Despite significant theoretical and empirical progress, there is still no unified framework for understanding how concepts are used in reasoning. This paper argues that the theory of conceptual spaces is capable of filling this gap. Our strategy is to demonstrate how various inference mechanisms which clearly rely on conceptual information—including similarity, typicality, and diagnosticity-based reasoning—can be modeled using principles derived from conceptual spaces. Our first topic analyzes the role of expectations in inductive reasoning and their relation to the structure of our concepts. We examine the relationship between using generic expressions in natural language and common-sense reasoning as a second topic. We propose that the strength of a generic can be described by distances between properties and prototypes in conceptual spaces. Our third topic is category-based induction. We demonstrate that the theory of conceptual spaces can serve as a comprehensive model for this type of reasoning. The final topic is analogy. We review some proposals in this area, present a taxonomy of analogical relations, and show how to model them in terms of distances in conceptual spaces. We also briefly discuss the implications of the model for reasoning with concepts in artificial systems.

Empirical progression criteria thresholds for feasibility outcomes in HIV clinical trials: a methodological study

IntroductionPilot and feasibility trials use predetermined thresholds for feasibility outcomes to decide if a larger trial is feasible. These thresholds may be derived from the literature, observational data, or clinical experience. The aim of this study was to determine empirical estimates for feasibility outcomes to inform future HIV pilot randomized trials.MethodsWe conducted a methodological study of HIV clinical trials indexed in the past 5 years (2017–2021) in the PubMed database. We included trials of people living with HIV individually randomized to any type of intervention and excluded pilot trials and cluster randomized trials. Screening and data extraction were conducted in duplicate. We computed estimates for recruitment, randomization, non-compliance, lost to follow-up, discontinuation, and the proportion analyzed using a random effects meta-analysis of proportions and reported these estimates according to the following subgroups: use of medication, intervention type, trial design, income level, WHO region, participant type, comorbidities, and source of funding. We report estimates with 95% confidence intervals.ResultsWe identified 2122 studies in our search, of which 701 full texts were deemed relevant, but only 394 met our inclusion criteria. We found the following estimates: recruitment (64.1%; 95% CI 57.7 to 70.3; 156 trials); randomization (97.1%; 95% CI 95.8 to 98.3; 187 trials); non-compliance (3.8%; 95% CI 2.8 to 4.9; 216 trials); lost to follow-up (5.8%; 95% CI 4.9 to 6.8; 251 trials); discontinuation (6.5%; 95% CI 5.5 to 7.5; 215 trials); analyzed (94.2%; 95% CI 92.9 to 95.3; 367 trials). There were differences in estimates across most subgroups.ConclusionThese estimates may be used to inform the design of HIV pilot randomized trials with careful consideration of variations due to some of the subgroups investigated.

Comparative success and empirical progress without approximate truth

Comparative success and empirical progress without approximate truth

The private life of CEOs; A strategic leadership perspective

Major events in the private lives of CEOs have been a source of fascination for decades. However, despite gaining traction, studies on the relevant phenomena (e.g., marriage, divorce, parenthood, illness) remain scattered in parallel across disciplines. We thematically review the interdisciplinary evidence on the fast-emerging literature on CEO private life events (72 unique studies) to consolidate our understanding of how private life events can become reflected in the professional domains of CEO influence. Through this approach, we comprehensively intersect empirical progress on CEO life events with key strategic leadership outcomes (i.e., performance, strategy, socio-ethical issues, innovation, governance), allowing us to identify key gaps and highlight inconsistencies. We then propose several research opportunities and challenges to move the field from phenomenon-driven standalone studies to a more coherent research program on the blurred boundaries between the private and professional lives of CEOs.

Far-Right and Jihadi Terrorism Within the United States: From September 11th to January 6th

As tens of thousands swarmed the US Capitol Grounds on January 6th, 2021, to oppose the election of Joe Biden as President, thousands among them assaulted officers and breached the building to stop the certification of the election results, leading to nine deaths and hundreds of injuries. Despite being an act of terrorism and evidence that far-right extremists planned to take over the government, some dismiss January 6th as legitimate political discourse. This divisive response starkly contrasts with the unifying response to the jihadi attacks on September 11th two decades earlier, raising the question as to why the country has not also united against far-right extremism. This review argues that the Bush administration misused deterrence in response to the September 11th attacks. While unifying the country, it also disproportionately punished innocent Muslims and legitimized anti-Muslim ideals, giving rise to anti-Muslim hate crimes and backlash by jihadi extremists and emboldening violence from far-right extremists. This review combines research on deterrence, counterterrorism, anti-Muslim ideals, and far-right organizations with data on terrorism and hate crimes within the United States to delineate this argument and assess its alignment with the empirical progression of violence between September 11th and January 6th.

Electromagnetism's Bridge Across the Explanatory Gap: How a Neuroscience/Physics Collaboration Delivers Explanation Into All Theories of Consciousness.

A productive, informative three decades of correlates of phenomenal consciousness (P-Consciousness) have delivered valuable knowledge while simultaneously locating us in a unique and unprecedented explanatory cul-de-sac. Observational correlates are demonstrated to be intrinsically very unlikely to explain or lead to a fundamental principle underlying the strongly emergent 1st-person-perspective (1PP) invisibly stowed away inside them. That lack is now solidly evidenced in practice. To escape our explanatory impasse, this article focuses on fundamental physics (the standard model of particle physics), which brings to light a foundational argument for how the brain is an essentially electromagnetic (EM) field object from the atomic level up. That is, our multitude of correlates of P-Consciousness are actually descriptions of specific EM field behaviors that are posed (hypothesized) as “the right” correlate by a particular theory of consciousness. Because of this, our 30 years of empirical progress can be reinterpreted as, in effect, the delivery of a large body of evidence that the standard model’s EM quadrant can deliver a 1PP. That is, all theories of consciousness are, in the end, merely recipes that select a particular subset of the totality of EM field expression that is brain tissue. With a universal convergence on EM, the science of P-Consciousness becomes a collaborative effort between neuroscience and physics. The collaboration acts in pursuit of a unified explanation applicable to all theories of consciousness while remaining mindful that the process still contains no real explanation as to why or how EM fields deliver a 1PP. The apparent continued lack of explanation is, however, different: this time, the way forward is opened through its direct connection to fundamental physics. This is the first result (Part I). Part II posits, in general terms, a structural (epistemic) add-on/upgrade to the standard model that has the potential to deliver the missing route to an explanation of how subjectivity is delivered through EM fields. The revised standard model, under the neuroscience/physics collaboration, intimately integrates with the existing “correlates of-” paradigm, which acts as its source of empirical evidence. No existing theory of consciousness is lost or invalidated.

The Contributions of Model Studies for Fundamental Understanding of Polymer Mechanochemistry

AbstractThe exciting field of polymer mechanochemistry has made great empirical progress in discovering reactions in which a stretching force accelerates scission of strained bonds using single molecule force spectroscopy and ultrasonication experiments. Understanding why these reactions happen, i.e., the fundamental physical processes that govern coupling of macroscopic motion to chemical reactions, as well as discovering other patterns of mechanochemical reactivity require complementary techniques, which permit a much more detailed characterization of reaction mechanisms and the distribution of force in reacting molecules than are achievable in SMFS or ultrasonication. A molecular force probe allows the specific pattern of molecular strain that is responsible for localized reactions in stretched polymers to be reproduced accurately in non-polymeric substrates using molecular design rather than atomistically intractable collective motions of millions of atoms comprising macroscopic motion. In this review, we highlight the necessary features of a useful molecular force probe and describe their realization in stiff stilbene macrocycles. We describe how studying these macrocycles using classical tools of physical organic chemistry has allowed detailed characterizations of mechanochemical reactivity, explain some of the most unexpected insights enabled by these probes, and speculate how they may guide the next stage of mechanochemistry.

NCC research and the problem of consciousness

One of the reasons why the Neural Correlates of Consciousness Program could appear attractive in the 1990s was that it seemed to disentangle theoretical and empirical problems. Theoretical disagreements could thus be sidestepped in order to focus on empirical research regarding the neural substrate of consciousness. One of the further consequences of this dissociation of empirical and theoretical questions was that fundamental questions regarding the Mind Body Problem or the “Hard Problem of Consciousness” could remain unresolved even if the search for the neural correlates had been successful.Drawing on historical examples, a widely held consensus in the philosophy of science, and actual NCC research we argue that there is no such independence. Moreover, as the dependence between the theoretical and the empirical level is mutual, empirical progress will go hand in hand with theoretical development. Thus, contrary to what the original NCC program suggested, we conclude that NCC research may significantly take advantage from and contribute to theoretical progress in our explanation and understanding of consciousness. Eventually, this might even contribute to a solution of the Hard Problem of Consciousness.

The new normal? Redaction bias in biomedical science.

A concerning amount of biomedical research is not reproducible. Unreliable results impede empirical progress in medical science, ultimately putting patients at risk. Many proximal causes of this irreproducibility have been identified, a major one being inappropriate statistical methods and analytical choices by investigators. Within this, we formally quantify the impact of inappropriate redaction beyond a threshold value in biomedical science. This is effectively truncation of a dataset by removing extreme data points, and we elucidate its potential to accidentally or deliberately engineer a spurious result in significance testing. We demonstrate that the removal of a surprisingly small number of data points can be used to dramatically alter a result. It is unknown how often redaction bias occurs in the broader literature, but given the risk of distortion to the literature involved, we suggest that it must be studiously avoided, and mitigated with approaches to counteract any potential malign effects to the research quality of medical science.

Spanish women pastoralists' pathways into livestock management: Motivations, challenges and learning

Rural studies has made considerable theoretical and empirical progress on gender and agriculture, yet almost none of this work focuses specifically on women involved in livestock production in the Global North. To address this gap, we explored the experiences of women involved in extensive livestock farming in Spain, including their motivations, identities, challenges, and sources of learning and support. Using a life-history approach, we interviewed 29 women across four regions of Spain and conducted follow-up participatory workshops in three regions. We investigated how women enter the extensive livestock sector, learn the occupation and business of livestock husbandry, and their experiences of power relations and discrimination, then interpreted our findings through the lens of Feminist Agrifood Systems Theory (FAST). Women's narratives reveal three primary pathways into livestock management: via family, via a partner/spouse, and from zero. Although interviewees shared common experiences and struggles, each pathway is associated with distinct motivations, challenges, and sources of learning. This variety of goals and experiences disrupts stereotypes about women's roles in extensive pastoralism and points to the need for outreach and policy grounded in the diverse realities of women's lived experiences. Our results underscore the obstacles pastoralist women face in gaining and maintaining economic and decision-making autonomy. Our findings partially support all FAST propositions, yet highlight continuing challenges for Spanish women entering a historically male-dominated sector. In the Spanish context, we found strongest support for FAST propositions 5 and 6, which posit that women must carefully navigate agricultural institutions, often encountering exclusion and discrimination, and that women create their own networks to address their specific needs and advance agroecology and rural sustainability. Increased training for officials overseeing new enterprise incorporations, and investment in women's networks could reduce institutional bias and increase support for women operators.

Leadership, green innovation, and green creativity: a systematic review

ABSTRACT Conceptual and empirical progress have failed to keep up with growing industry interest in leadership, green innovation, and green creativity in the service industries. The purpose of this study is to address this gap by reviewing the literature on the relationship between leadership and green innovation/creativity. A total of 65 studies indexed in the Scopus database are analyzed. A systematic review and thematic analysis are performed utilizing Leximancer mixed analysis software. Descriptive findings are provided under eight categories: (1) studies by journal, (2) by method, (3) by time, (4) by country, (5) correlations between leadership and green innovation/creativity, (6) commonly used scales of green innovation and creativity, (7) summary of moderators, and (8) summary of mediators between leadership and green innovation/creativity. The findings show that there is a growing interest in the causal relationships among leadership and green innovation/creativity, and that Asian countries dominate the study domain. This study proposes a taxonomy of mediators and moderators. A concept map illustrating the main themes and concepts is also presented, and the study concludes by offering an agenda for future research. This study contributes to a deep understanding of the mechanisms underlying green innovation/creativity in the service context as well as extending research on the leadership–green-innovation/creativity nexus.

Формирование инновационной экосистемы в условиях цифровизации

We are currently at the stage of forming a digital economy. Due to the lack of relevant statistical and empirical data and rapid technological progress, public authorities are faced with constantly changing priorities when developing strategies for digitalizing the economy. The formation and development of the national segment of the digital economy is necessary to achieve sustainable economic growth, increase the country's competitiveness and improve the quality of life of the population. The need to predict trends in innovative development in the context of the digitalization of the economy, taking into account modern realities, predetermined the choice of the topic and the main directions of the study. The article presents international comparisons of indicators that characterize the prospects and opportunities for innovative development. The possible consequences of digital transformation are considered. The stages of the formation of the innovation ecosystem are justified. Recommendations for the formation of an innovation ecosystem in the context of digital transformation are summarized.

Time-resolved Rotational Velocities in the Upper Atmosphere of WASP-33 b*

Abstract While steady empirical progress has been made in understanding the structure and composition of hot-planet atmospheres, direct measurements of velocity signatures, including winds, rotation, and jets, have lagged behind. Quantifying atmospheric dynamics of hot planets is critical for a complete understanding of their atmospheres, and such measurements may even illuminate other planetary properties, such as magnetic field strengths. In this manuscript we present the first detection of the Balmer lines Hα and Hβ in the atmosphere of the ultra-hot Jupiter WASP-33 b. Using atmospheric models that include the effects of atmospheric dynamics, we show that the shape of the average Balmer line transmission spectrum is consistent with rotational velocities in the planet’s thermosphere of km s−1. We also measure a low-significance day- to nightside velocity shift of km s−1 in the transmission spectrum, which is naturally explained by a global wind across the planet’s terminator. In a separate analysis the time-resolved velocity centroids of individual transmission spectra show unambiguous evidence of rotation, with a best-fit velocity of km s−1, consistent with the value of v rot derived from the shape of the average Balmer line transmission spectrum. Our observations and analysis confirm the power of time-resolved transmission spectra with a high signal-to-noise ratio to measure the velocity structures in exoplanet atmospheres. The high rotational and wind velocities we measure highlight the need for more detailed 3D global climate simulations of the rarefied upper atmospheres of ultra-hot gas giants.

Business models in process industries: Emerging trends and future research

This article reviews the literature on business models in process industries. The review reveals that the business model concept has gained an increasing amount of attention in process-industrial research, but it also shows that the literature exhibits a lack of construct clarity and that it is developing in different domains, depending on the perspectives scholars have taken to study business models in process industries. Specifically, while innovation management scholars have explored the relationship between technological innovations and business models as well as the process and outcomes of business model innovation, scholars from the domain of production management have focused on value chain (re)configurations and taken a system-based perspective to consider boundary-spanning exchanges with key stakeholders in the design of business models. However, despite variance in the perspectives, the review further shows that works in these divergent domains point to a family of emerging themes and to common ideas that have not been explored together. This allows us to identify the particularities of business models in process industries and develop a definition of process-industrial business models, which extends prior business model literature into the process industry context. Furthermore, we synthesize these connections to develop an agenda for future, cross-disciplinary research on business models in process industries that assists cumulative theorizing and subsequent empirical progress.

Empirical foundations for an integrated study of language evolution

Abstract Half a century ago, Uriel Weinreich, William Labov, and Marvin Herzog laid out a programmatic vision for the study of language change. This included establishing five fundamental problems for the field and a radical shift from a focus on idiolects to a focus on population-level change (grounded in their concept of orderly heterogeneity). They also expressed an explicit desire to see an integrated evolutionary study of language change. In spite of this, the newer fields of language evolution and cultural evolution make little contact with the field of sociolinguistics that emerged out of their work. Here we lay out a program, grounded in their five problems, for a more integrated future. We situate each problem in modern sociolinguistics and identify promising points for theoretical exchange, making comparisons with Tinbergen’s four questions, which play a similar role in the evolutionary sciences. Finally, we propose cultural-evolutionary experiments for making empirical progress.