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Browse the failure-mode index

21,681 real negative results, null findings, and replication failures. Search the index →

WASTE indexes published research — it does not host or republish full papers. Each entry is a metadata record compiled from open scholarly databases; the abstract is shown in full only where the paper is openly licensed, otherwise a short excerpt under fair use. Classifications are automated and approximate.

Negative / Null Result ReportOpen accessSocial Sciences

Explaining significant differences in subjective and objective measures of cardiovascular health: evidence for the socioeconomic gradient in a population-based study

Irene Mosca, Bláithín Ní Bhuachalla, Rose Anne Kenny · 2013 · BMC Cardiovascular Disorders

BACKGROUND: To assess prevalence rates of subjective and objective reports of two cardiovascular disorders (hypertension and hypercholesterolemia) for the same subset of respondents in a large-scale study. To determine whether and the extent to which the socioeconomic health gradient differed in the subjective and objective reports of the two cardiovascular disorders. METHODS: Data from the first wave (2009/2011) of The Irish Longitudinal Study on Ageing were used (n = 4,179). This is a nationally representative study of community-dwelling adults aged 50+ residing in Ireland. Subjective measur

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Negative / Null Result ReportOpen accessMedicine

Practice variation in anti-epileptic drug use for neonatal hypoxic-ischemic encephalopathy among regional NICUs

Maria L.V. Dizon, Rakesh Rao, Shannon E. G. Hamrick et al. · 2019 · BMC Pediatrics

BACKGROUND: While intercenter variation (ICV) in anti-epileptic drug (AED) use in neonates with seizures has been previously reported, variation in AED practices across regional NICUs has not been specifically and systematically evaluated. This is important as these centers typically have multidisciplinary neonatal neurocritical care teams and protocolized approaches to treating conditions such as hypoxic ischemic encephalopathy (HIE), a population at high risk for neonatal seizures. To identify opportunities for quality improvement (QI), we evaluated ICV in AED utilization for neonates with H

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Negative / Null Result ReportOpen accessMedicine

RETRACTED ARTICLE: Pharmacokinetics, Biodistribution, and Anti-Angiogenesis Efficacy of Diamino Propane Tetraiodothyroacetic Acid-conjugated Biodegradable Polymeric Nanoparticle

Weikun Li, Murat Yalçın, Dhruba J. Bharali et al. · 2019 · Scientific Reports

Abstract The anti-angiogenic agent, diamino propane tetraiodothyroacetic acid (DAT), is a thyro-integrin (integrin αvβ3) antagonist anticancer agent that works via genetic and nongenetic actions. Tetraiodothyroacetic acid (tetrac) and DAT as thyroid hormone derivatives influence gene expression after they transport across cellular membranes. To restrict the action of DAT to the integrin αvβ3 receptors on the cell surface, we used DAT-conjugated PLGA nanoparticles (NDAT) in an active targeting mode to bind to these receptors. Preparation and characterization of NDAT is described, and both in vi

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Negative / Null Result ReportOpen accessMedicine

Design and rationale of randomized evaluation of decreased usage of beta-blockers after acute myocardial infarction (REDUCE-AMI)

Troels Yndigegn, Bertil Lindahl, Joakim Alfredsson et al. · 2022 · European Heart Journal - Cardiovascular Pharmacotherapy

AIMS: Most trials showing benefit of beta-blocker treatment after myocardial infarction (MI) included patients with large MIs and are from an era before modern biomarker-based MI diagnosis and reperfusion treatment. The aim of the…

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Negative / Null Result Report

Spinal Muscular Atrophy after Nusinersen Therapy: Improved Physiology in Pediatric Patients with No Significant Change in Urine, Serum, and Liquor 1H-NMR Metabolomes in Comparison to an Age-Matched, Healthy Cohort

Leon Deutsch, Damjan Osredkar, Janez Plavec et al. · 2021 · Metabolites

Spinal muscular atrophy (SMA) is a genetically heterogeneous group of rare neuromuscular diseases and was until recently the most common genetic cause of death in children. The effects of 2-month nusinersen therapy on urine, serum, and…

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Negative / Null Result Report

Climate change threatens archaeologically significant ice patches: insights into their age, internal structure, mass balance and climate sensitivity

Rune Strand Ødegård, Atle Nesje, Ketil Isaksen et al. · 2017 · The Cryosphere

Abstract. Despite numerous spectacular archaeological discoveries worldwide related to melting ice patches and the emerging field of glacial archaeology, governing processes related to ice patch development during the Holocene and their…

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Negative / Null Result Report

No Antidotal Effect of Intravenous Lipid Emulsion in Experimental Amitriptyline Intoxication Despite Significant Entrapment of Amitriptyline

Erik Litonius, Tomohisa Niiya, Pertti J. Neuvonen et al. · 2011 · Basic & Clinical Pharmacology & Toxicology

Abstract: Intravenous lipid emulsion has been used in the resuscitative treatment of intoxications caused by local anaesthetics and tricyclic antidepressants with seemingly beneficial results. We studied the effect of intravenous lipid…

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Negative / Null Result ReportOpen accessNeuroscience

Dynamic Interactions Between Hemispheres Reveal a Compensatory Pathway for Motor Recovery in Moderate-to-Severe Subcortical Stroke

Huaxin Fan, Hewei Wang, Zhengxu Lian et al. · 2026 · Journal of Stroke

BACKGROUND AND PURPOSE: Therapeutic target selection in noninvasive brain stimulation for poststroke motor recovery typically relies on the interhemispheric inhibition model, which is effective for mildly affected patients but offers…

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Negative / Null Result ReportOpen accessComputer Science

Oracle and Human Baselines for Native Language Identification

Shervin Malmasi, Joel Tetreault, Mark Dras · 2015

We examine different ensemble methods, including an oracle, to estimate the upper-limit of classification accuracy for Native Language Identification (NLI). The oracle outperforms state-of-the-art systems by over 10% and results indicate that for many misclassified texts the correct class label receives a significant portion of the ensemble votes, often being the runner-up. We also present a pilot study of human performance for NLI, the first such experiment. While some participants achieve modest results on our simplified setup with 5 L1s, they did not outperform our NLI system, and this perf

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Negative / Null Result ReportOpen accessSocial Sciences

I know that I know nothing: Can puncturing the illusion of explanatory depth overcome the relationship between attitudinal dissimilarity and prejudice?

Jan G. Voelkel, Mark J. Brandt, Matteo Colombo · 2018 · Comprehensive Results in Social Psychology

People are prejudiced toward groups they perceive as having a worldview dissimilar from their own. This link between perceived attitudinal dissimilarity and prejudice is so stable that it has been described as a psychological law. The current research tests whether reducing people’s (over-)confidence in their own understanding of policies by puncturing their illusion of explanatory depth in the political domain will reduce the link between perceived attitudinal dissimilarity and prejudice. In an initial pre-registered experiment (N = 296), we did not find support for our hypothesis, but explor

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Negative / Null Result ReportOpen accessDecision Sciences

The influence of mortality and socioeconomic status on risk and delayed rewards: a replication with British participants

Gillian Pepper, Deirdre Corby, Rachel Bamber et al. · 2017 · PeerJ

Here, we report three attempts to replicate a finding from an influential psychological study (Griskevicius et al., 2011b). The original study found interactions between childhood SES and experimental mortality-priming condition in predicting risk acceptance and delay discounting outcomes. The original study used US student samples. We used British university students (replication 1) and British online samples (replications 2 and 3) with a modified version of the original priming material, which was tailored to make it more credible to a British audience. We did not replicate the interaction b

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Negative / Null Result ReportOpen accessMedicine

Calcium intake and its relationship with risk of overweight and obesity in adolescents

Tamara Beres Lederer Goldberg, Carla Cristiane da Silva, Luciana Peres et al. · 2026 · Archivos Latinoamericanos de Nutrición

Adolescents' eating habits are determined by social, psychological, economic, political, and educational influences. They tend to prefer foods with inadequate nutritional value and high fat and carbohydrate content which leads to excessive…

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Negative / Null Result ReportOpen accessMedicine

Preoperative statins are associated with a reduced risk of postoperative delirium following vascular surgery

Dae-Sang Lee, Mi Yeon Lee, Chi-Min Park et al. · 2018 · PLoS ONE

Delirium is a common complication of vascular surgery. The protective effect of preoperative statins on delirium after vascular surgery is controversial. The authors hypothesized that preoperative statin administration would decrease the incidence of delirium after vascular surgery. From May 2010 to May 2015, 1,132 patients underwent vascular surgery. Postoperative delirium was diagnosed from patients' medical records. The incidence of delirium was 11.5%. The preoperative statin exposure was not associated with reduced delirium in the univariate analysis. After adjusting for covariates, preope

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Negative / Null Result ReportOpen accessPsychology

Test-retest reliability of a smartphone-based approach-avoidance task: Effects of retest period, stimulus type, and demographics

Hilmar Zech, Philip A. Gable, W. van Dijk et al. · 2022 · Behavior Research Methods

The approach-avoidance task (AAT) is an implicit task that measures people's behavioral tendencies to approach or avoid stimuli in the environment. In recent years, it has been used successfully to help explain a variety of health problems (e.g., addictions and phobias). Unfortunately, more recent AAT studies have failed to replicate earlier promising findings. One explanation for these replication failures could be that the AAT does not reliably measure approach-avoidance tendencies. Here, we first review existing literature on the reliability of various versions of the AAT. Next, we examine

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Negative / Null Result ReportOpen accessNeuroscience

Local Information Processing in Adults with High Functioning Autism and Asperger Syndrome: The Usefulness of Neuropsychological Tests and Self-Reports

Annelies Spek, Evert Scholte, Ina A. van Berckelaer‐Onnes · 2010 · Journal of Autism and Developmental Disorders

Local information processing in 42 adults with high functioning autism, 41 adults with Asperger syndrome and 41 neurotypical adults was examined. Contrary to our expectations, the disorder groups did not outperform the neurotypical group…

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Negative / Null Result ReportOpen accessPsychology

Opening Pandora’s Loot Box: Weak Links Between Gambling and Loot Box Expenditure in China, and Player Opinions on Probability Disclosures and Pity-Timers

Leon Y. Xiao, Tullia C. Fraser, Philip Newall · 2022 · Journal of Gambling Studies

Loot boxes are quasi-gambling virtual products in video games that provide randomised rewards of varying value. Previous studies in Western contexts have identified a positive correlation between loot box purchasing and problem gambling severity. A preregistered survey of People's Republic of China (PRC) video game players (N = 879) failed to replicate this correlation. We observed statistically significant but weak positive correlations between loot box expenditure and past-year gambling participation, and between loot box expenditure and impulsiveness. This study cannot prove that loot boxes

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Negative / Null Result ReportOpen accessPsychology

Performance similarities predict collective benefits in dyadic and triadic joint visual search

Basil Wahn, Artur Czeszumski, Peter König · 2018 · PLoS ONE

When humans perform tasks together, they may reach a higher performance in comparison to the best member of a group (i.e., a collective benefit). Earlier research showed that interindividual performance similarities predict collective benefits for several joint tasks. Yet, researchers did not test whether this is the case for joint visuospatial tasks. Also, researchers did not investigate whether dyads and triads reach a collective benefit when they are forbidden to exchange any information while performing a visuospatial task. In this study, participants performed a joint visual search task e

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Negative / Null Result ReportOpen accessMedicine

Peptide‐Drug Conjugates: A New Hope for Cancer

Amy Armstrong, Fleur Coburn, Yanyamba Nsereko et al. · 2025 · Journal of Peptide Science

Peptide-drug conjugates (PDCs) are advancing as targeted cancer therapies, leveraging lessons from antibody-drug conjugates (ADCs) to improve tumour specificity. These molecules combine a homing peptide with a cytotoxic payload via a linker, enabling precise drug delivery while sparing healthy tissue. Despite their potential, PDCs face challenges including metabolic instability, premature payload release and rapid clearance, limiting clinical success. Only Lutathera remains FDA-approved after Pepaxto's withdrawal, though Pepaxto retains EMA and MHRA approval-highlighting regulatory and technic

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Negative / Null Result ReportEconomics, Econometrics and Finance

Wettbewerb als Norm der Wettbewerbspolitik

Erich Hoppmann · 2026 · ORDO

Der Wirtschaftspolitische Ausschus des Deutschen Bundestages erklarte bei Erlas des Kartellgesetzes, er konne und wolle den Wettbewerbsbegriff nicht definieren, das sei eine Angelegen heit der zustandigen Fachdisziplin1. Diese Aufforderung…

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Negative / Null Result Report

Invasive crayfish outperform Potamonautid crabs at higher temperatures

Takudzwa C. Madzivanzira, Josie South, Olaf L. F. Weyl · 2021 · Freshwater Biology

Abstract Data on ecological impacts of freshwater crayfish invasions in Africa are scarce but invasion history suggests the likelihood of negative implications for biodiversity. To evaluate the potential for ecological impacts we describe…

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Negative / Null Result Report

Do compassionate firms outperform? The role of organizational learning

Jacob Guinot, Sandra Miralles, Alma Rodríguez-Sánchez et al. · 2020 · Employee Relations: The International Journal

Purpose Based on a new management paradigm rooted on care and compassion, this study explores the consequences of compassion at work on organizational learning and firm performance. Design/methodology/approach Structural equation modeling…

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Negative / Null Result Report

One chiral fingerprint to find them all

Markus Orsi, Jean-Louis Reymond · 2024 · Journal of Cheminformatics

Abstract Molecular fingerprints are indispensable tools in cheminformatics. However, stereochemistry is generally not considered, which is problematic for large molecules which are almost all chiral. Herein we report MAP4C, a chiral…

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Negative / Null Result ReportOpen accessMedicine

Development of Three-Dimensional Human Intestinal Organoids as a Physiologically Relevant Model for Characterizing the Viral Replication Kinetics and Antiviral Susceptibility of Enteroviruses

Jessica Oi‐Ling Tsang, Jie Zhou, Xiaoyu Zhao et al. · 2021 · Biomedicines

Enteroviruses are important causes of hand, foot, and mouth disease, respiratory infections, and neurological infections in human. A major hurdle for the development of anti-enterovirus agents is the lack of physiologically relevant evaluation platforms that closely correlate with the in vivo state. We established the human small intestinal organoids as a novel platform for characterizing the viral replication kinetics and evaluating candidate antivirals for enteroviruses. The organoids supported productive replication of enterovirus (EV)-A71, coxsackievirus B2, and poliovirus type 3, as evide

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Negative / Null Result ReportOpen accessMedicine

Kawasaki disease and 13-valent pneumococcal conjugate vaccination among young children: A self-controlled risk interval and cohort study with null results

Meghan A. Baker, Bethany Baer, Martin Kulldorff et al. · 2019 · PLoS Medicine

BACKGROUND: Kawasaki disease is an acute vasculitis that primarily affects children younger than 5 years of age. Its etiology is unknown. The United States Vaccine Safety Datalink conducted postlicensure safety surveillance for 13-valent pneumococcal conjugate vaccine (PCV13), comparing the risk of Kawasaki disease within 28 days of PCV13 vaccination with the historical risk after 7-valent PCV (PCV7) vaccination and using chart-validation. A relative risk (RR) of 2.38 (95% CI 0.92-6.38) was found. Concurrently, the Food and Drug Administration (FDA) conducted a postlicensure safety review that

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