Negative / Null Result ReportOpen accessComputer Science
Niek Beckers, Edwin van Asseldonk, Herman van der Kooij · 2020 · arXiv
Haptic interaction between two humans, for example, a physiotherapist assisting a patient regaining the ability to grasp a cup, likely facilitates motor skill acquisition. Haptic human-human interaction has been shown to enhance individual performance improvement in a tracking task with a visuomotor rotation perturbation. These results are remarkable given that haptically assisting or guiding an individual rarely benefits their individual improvement when the assistance is removed. We, therefore, replicated a study that reported that haptic interaction between humans was beneficial for individ
Negative / Null Result ReportMedicine
Bonglack, Carrel-Lammert, Hoehn et al. · 2026 · Urogynecology (Philadelphia, Pa.)
Acute urinary tract infections (UTIs) are common after prolapse and anti-incontinence surgery, with incidence rates varying from 14% to 64%. The objective was to decrease rates of symptomatic urinary tract infections in patients undergoing…
View details →DOI: 10.1097/spv.0000000000001742 Negative / Null Result ReportOpen accessComputer Science
Runtian Zhai, Chen Dan, Zico Kolter et al. · 2022 · arXiv
Empirical risk minimization (ERM) is known in practice to be non-robust to distributional shift where the training and the test distributions are different. A suite of approaches, such as importance weighting, and variants of distributionally robust optimization (DRO), have been proposed to solve this problem. But a line of recent work has empirically shown that these approaches do not significantly improve over ERM in real applications with distribution shift. The goal of this work is to obtain a comprehensive theoretical understanding of this intriguing phenomenon. We first posit the class o
Negative / Null Result ReportMedicine
Vu, Nguyen, Nguyen et al. · 2026 · Substance use & misuse
Patient trust in healthcare providers (PTP) is critical for improving treatment adherence and outcomes in substance use disorders. As concurrent opioid and methamphetamine use increasingly complicates methadone maintenance treatment (MMT),…
View details →DOI: 10.1080/10826084.2026.2676993 Negative / Null Result ReportMedicine
Oletu, Oladimeji, Osueni et al. · 2026 · Cureus
Intensive care unit (ICU) survivors experience high rates of healthcare utilization after hospital discharge, including readmissions and emergency department (ED) visits. Timely outpatient follow-up has been proposed to improve care…
View details →DOI: 10.7759/cureus.107746 Negative / Null Result ReportMedicine
Mantovani, Chagas, Horiquini-Barbosa · 2026 · Developmental neurorehabilitation
Children diagnosed with central nervous system (CNS) tumors frequently present with persistent motor impairments that compromise independence and participation. Although the Gross Motor Function Measure (GMFM-88) is widely used in…
View details →DOI: 10.1080/17518423.2026.2679487 Negative / Null Result Report
Ainun Oktavia Sari, Rahayu Sulistyowati, Ita Prihantika · 2020 · Administrativa: Jurnal Birokrasi, Kebijakan dan Pelayanan Publik
The Conditional Cash Transfer (CCT) is a conditional social cash transfer program that provides assistance to Very Poor Households (RTSM) appointed as participants in the Conditional Cash Transfer program which is related to improving the…
View details →DOI: 10.23960/administrativa.v2i3.51 Negative / Null Result ReportMedicine
Huang, Tsai, Lin et al. · 2026 · Taiwanese journal of obstetrics & gynecology
A higher oocyte yield is generally associated with improved outcomes in assisted reproductive technology (ART). Vitrification enables the accumulation of oocytes, zygotes, or embryos across multiple cycles, offering a potential strategy to…
View details →DOI: 10.1016/j.tjog.2025.06.010 Negative / Null Result ReportOpen accessMathematics
Mark Rubin · 2020 · arXiv
Preregistration entails researchers registering their planned research hypotheses, methods, and analyses in a time-stamped document before they undertake their data collection and analyses. This document is then made available with the published research report to allow readers to identify discrepancies between what the researchers originally planned to do and what they actually ended up doing. This historical transparency is supposed to facilitate judgments about the credibility of the research findings. The present article provides a critical review of 17 of the reasons behind this argument.
Negative / Null Result ReportMedicine
Riyapan, Laopran, Chantanakomes et al. · 2026 · Resuscitation
Dispatcher-assisted cardiopulmonary resuscitation (DA-CPR) has been shown to increase bystander CPR rates and improve outcomes after out-of-hospital cardiac arrest (OHCA). However, dispatchers cannot directly visualize the scene, which may…
View details →DOI: 10.1016/j.resuscitation.2026.111191 Negative / Null Result ReportOpen accessComputer Science
Alex Ayoub, Samuel Robertson, Dawen Liang et al. · 2025 · arXiv
Matrix factorization is a widely used approach for top-N recommendation and collaborative filtering. When implemented on implicit feedback data (such as clicks), a common heuristic is to upweight the observed interactions. This strategy has been shown to improve performance for certain algorithms. In this paper, we conduct a systematic study of various weighting schemes and matrix factorization algorithms. Somewhat surprisingly, we find that training with unweighted data can perform comparably to, and sometimes outperform, training with weighted data, especially for large models. This observat
Negative / Null Result ReportMedicine
Zhang, Jiang, Jiang · 2026 · The journal of sexual medicine
Hypertension is a major cause of erectile dysfunction (ED). The impact of hypertension on the transcriptome and proteome of penile corpus cavernosum tissue, as well as its relationship with erectile dysfunction, is not clear. This study…
View details →DOI: 10.1093/jsxmed/qdag191 Negative / Null Result ReportMedicine
Tsiotsios, Vamvakas, Labropoulou et al. · 2026 · Acta haematologica
Introduction Patients with homozygous β-thalassemia show continuously improved survival, which has contributed to the development of kidney complications, predominantly expressed as increased albuminuria. In particular, patients with…
View details →DOI: 10.1159/000552285 Negative / Null Result ReportMedicine
Ani, Hameed · 2026 · Wiadomosci lekarskie (Warsaw, Poland : 1960)
Aim: This study aimed to evaluate the effectiveness of a structured intravenous infusion protocol in improving the quality of care and reducing IV-related complications among hospitalized patients. Materials and Methods: A purposive sample…
View details →DOI: 10.36740/wlek/219896 Negative / Null Result ReportOpen accessMathematics
Andrea Schioppa · 2015 · arXiv
For each $β>1$ we construct a family $F_β$ of metric measure spaces which is closed under the operation of taking weak-tangents (i.e.~blow-ups), and such that each element of $F_β$ admits a $(1,P)$-Poincaré inequality if and only if $P>β$.
Negative / Null Result ReportOpen accessEconomics, Econometrics and Finance
Ian Crawford, Carl-Emil Pless · 2026 · arXiv
We study the associations between everyday economic decision-making quality and people's emotional states. Using high-frequency, highly disaggregated consumer "scanner" data, we show that the cost of poor decision-making is substantial, on average equal to around half of day-to-day consumption budgets. While material circumstances help explain decision-making quality, how people feel about those circumstances is equally important. Contrary to evidence that stress and worry impair performance in settings where distraction is costly, we find these same feelings are associated with improved decis
Abandoned Hypothesis
Julia Casañas Cast · 2020 · Royal Conservatoire Research Portal
Many classical musicians can suffer from tension and nervousness during solo performance. This research looks at how practicing improvisation and creative body movement, as well as creating one’s own performance together with a dancer, can…
View details →DOI: 10.22501/koncon.792184 Failed Experiment ReportMedicine
Baier, Miao, Schirrmacher et al. · 2026 · Pharmaceuticals (Basel, Switzerland)
Background : Zirconium-89 ( 89 Zr) is a key PET radionuclide and the limited in vivo stability of its clinically used 89 Zr-DFO complexes has driven the pursuit of improved chelator architectures. Among these, DFO* has attracted particular…
View details →DOI: 10.3390/ph19060813 Negative / Null Result Report
Bahadır Kartal, Mehmet Berksun Tutan, Fatih Şahin et al. · 2024 · Hitit Medical Journal
Objective: Gastric cancer surgery, including curative and palliative procedures, is crucial for managing gastric cancer. Accurate assessment of nutritional status is essential for risk stratification and improving patient outcomes. This…
View details →DOI: 10.52827/hititmedj.1516777 Negative / Null Result ReportOpen accessMedicine
van Mourik M, Spierings J, Koca P et al. · 2026 · Journal of tissue engineering and regenerative medicine
Providing a functional pericellular matrix (PCM) by fine-tuning the microenvironment of the articular chondrocytes (ACs) can greatly improve the outcomes of articular cartilage tissue engineering. While harvesting ACs with their PCM…
View details →DOI: 10.1155/term/9947868 Negative / Null Result ReportOpen accessComputer Science
Paul K. Mandal · 2025 · arXiv
In this paper, I investigate the effectiveness of dataset cartography for extractive question answering on the SQuAD dataset. I begin by analyzing annotation artifacts in SQuAD and evaluate the impact of two adversarial datasets, AddSent and AddOneSent, on an ELECTRA-small model. Using training dynamics, I partition SQuAD into easy-to-learn, ambiguous, and hard-to-learn subsets. I then compare the performance of models trained on these subsets to those trained on randomly selected samples of equal size. Results show that training on cartography-based subsets does not improve generalization to
Negative / Null Result ReportOpen accessMedicine
Raafat MH, Mourad KE, Elsyad MA · 2026 · BMC oral health
Background Reviewing the literature, the optimal implant position for 2-implant retained mandibular overdentures, which would be associated with improved peri-implant tissues, higher retention values, and better patient satisfaction,…
View details →DOI: 10.1186/s12903-026-08441-0 Negative / Null Result ReportOpen accessMathematics
Mark Rubin · 2024 · arXiv
One justification for preregistering research hypotheses, methods, and analyses is that it improves the transparent evaluation of the severity of hypothesis tests. In this article, I consider two cases in which preregistration does not improve this evaluation. First, I argue that, although preregistration may facilitate the transparent evaluation of severity in Mayo's error statistical philosophy of science, it does not facilitate this evaluation in Popper's theory-centric approach. To illustrate, I show that associated concerns about Type I error rate inflation are only relevant in the error
Negative / Null Result ReportOpen accessMedicine
Salim O, Chari A, Tahir MZ · 2026 · Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery
Purpose Hemispherotomy is an established treatment for children with drug-resistant epilepsy. Recent reports have suggested a superiority of outcomes with the vertical approach compared to the traditional lateral approach. This study…
View details →DOI: 10.1007/s00381-026-07353-2 Negative / Null Result ReportOpen accessComputer Science
Ab Mosca, Alvitta Ottley, Remco Chang · 2021 · arXiv
Interaction enables users to navigate large amounts of data effectively, supports cognitive processing, and increases data representation methods. However, there have been few attempts to empirically demonstrate whether adding interaction to a static visualization improves its function beyond popular beliefs. In this paper, we address this gap. We use a classic Bayesian reasoning task as a testbed for evaluating whether allowing users to interact with a static visualization can improve their reasoning. Through two crowdsourced studies, we show that adding interaction to a static Bayesian reaso
Negative / Null Result Report
Li S, Chai H, Bao W et al. · 2026 · Preprint
Abstract Background: It is commonly recommended to restore the mechanical axis to within –0° ± 3° in valgus knee. However, the situation is quite different when the alignment is –3° or 3° in the presence of a compromised MCL in Ranawat…
View details →DOI: 10.21203/rs.3.rs-9715753/v1 Negative / Null Result ReportOpen accessComputer Science
Joris Dannemann, Gero Junike · 2025 · arXiv
Batch normalization is one of the most important regularization techniques for neural networks, significantly improving training by centering the layers of the neural network. There have been several attempts to provide a theoretical justification for batch ormalization. Santurkar and Tsipras (2018) [How does batch normalization help optimization? Advances in neural information rocessing systems, 31] claim that batch normalization improves initialization. We provide a counterexample showing that this claim s not true, i.e., batch normalization does not improve initialization.
Negative / Null Result ReportOpen accessMedicine
Gao J, Hu CC, Wang XY et al. · 2026 · Frontiers in medicine
Background Perinatal sleep disturbance is highly prevalent among women undergoing elective cesarean section. Dexmedetomidine has been proven effective in improving sleep quality in patients undergoing general surgery, and this study aimed…
View details →DOI: 10.3389/fmed.2026.1823100 Negative / Null Result ReportMedicine
Checchi V, Cavani F, Vistola M et al. · 2026 · Operative dentistry
Objective Single-shade materials are favored for simplifying clinical workflows without compromising the esthetics of restorations, although evidence supporting their use remains limited. Therefore, this laboratory evaluated color match of…
View details →DOI: 10.2341/24-114-l Negative / Null Result ReportOpen accessComputer Science
Cheng Tang, Andrew Arnold · 2020 · arXiv
Recently, Nogueira et al. [2019] proposed a new approach to document expansion based on a neural Seq2Seq model, showing significant improvement on short text retrieval task. However, this approach needs a large amount of in-domain training data. In this paper, we show that this neural document expansion approach can be effectively adapted to standard IR tasks, where labels are scarce and many long documents are present.
