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19,735 real negative results, null findings, and replication failures · Negative / Null Result Report. 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 accessEconomics, Econometrics and Finance

Endogenous Production Networks

Daron Acemoğlu, Pablo Azar · 2020 · Econometrica

We develop a tractable model of endogenous production networks. Each one of a number of products can be produced by combining labor and an endogenous subset of the other products as inputs. Different combinations of inputs generate…

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Negative / Null Result ReportOpen accessMedicine

Comparative clinical evaluation of coronally advanced flap with or without platelet rich fibrin membrane in the treatment of isolated gingival recession

Thamaraiselvan Murugan, Sugumari Elavarasu, Thangakumaran Suthanthiran et al. · 2014 · Journal of Indian Society of Periodontology

AIM: The aim of this study was to determine whether the addition of an autologous platelet rich fibrin (PRF) membrane to a coronally advanced flap (CAF) would improve the clinical outcome in terms of root coverage, in the treatment of…

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Negative / Null Result ReportBusiness, Management and Accounting

The mediation effect of job satisfaction and organizational commitment on the organizational learning effect of the employee performance

Muhammad Hendri · 2019 · International Journal of Productivity and Performance Management

Purpose The purpose of this paper is to test the effect of organizational learning on employees’ job satisfaction, the effect of organizational learning on the employees’ organizational commitment, the effect of the organizational learning…

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Negative / Null Result ReportOpen accessSocial Sciences

The Influence of Competence, Motivation, and Organisational Culture to High School Teacher Job Satisfaction and Performance

H. Muhammad Arifin H. Muhammad Arifin · 2014 · International Education Studies

The study aims to find out and analyze the influence of competence, motivation, and organizational competence to high school teacher job satisfaction and performance in Jayapura City, Papua, Indonesia. The study was conducted on 117 respondents of 346 teachers by means of questionnaire. Data is analyzed by SEM analysis method in AMOS program. Findings indicate that competence and organizational culture affect positively and insignificantly teacher job satisfaction. While, job motivation affects positively and significantly teacher job satisfaction, but it did not give any significant effect on

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Negative / Null Result ReportOpen accessMedicine

Vertebroplasty versus sham procedure for painful acute osteoporotic vertebral compression fractures (VERTOS IV): randomised sham controlled clinical trial

Cristina Firanescu, Jolanda De Vries, Paul Lodder et al. · 2018 · BMJ

OBJECTIVE: To assess whether percutaneous vertebroplasty results in more pain relief than a sham procedure in patients with acute osteoporotic compression fractures of the vertebral body. DESIGN: Randomised, double blind, sham controlled…

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Negative / Null Result ReportOpen accessPsychology

Hybrid working from home improves retention without damaging performance

Nicholas Bloom, Ruobing Han, James Liang · 2024 · Nature

Abstract Working from home has become standard for employees with a university degree. The most common scheme, which has been adopted by around 100 million employees in Europe and North America, is a hybrid schedule, in which individuals spend a mix of days at home and at work each week 1,2 . However, the effects of hybrid working on employees and firms have been debated, and some executives argue that it damages productivity, innovation and career development 3–5 . Here we ran a six-month randomized control trial investigating the effects of hybrid working from home on 1,612 employees in a Ch

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Negative / Null Result ReportPsychology

Unequal in Opportunity, Equal in Process: Parental Sensitivity Promotes Positive Child Development in Ethnic Minority Families

Judi Mesman, Marinus H. van IJzendoorn, Marian J. Bakermans‐Kranenburg · 2011 · Child Development Perspectives

Abstract Most studies on parental sensitivity are based on Western samples, and the cross-cultural applicability of this construct has been subject to debate. This article reports on a systematic literature review on observational studies…

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Negative / Null Result ReportOpen accessEnvironmental Science

Livestock Type is More Crucial Than Grazing Intensity: Traditional Cattle and Sheep Grazing in Short‐Grass Steppes

Edina Tóth, Balázs Déak, Orsolya Valkó et al. · 2016 · Land Degradation and Development

Abstract In biodiversity conservation of agriculture‐driven landscapes, grasslands have an outstanding importance; their conservation became a top priority both in research and practice. In many regions, sheep or cattle grazing are the…

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Negative / Null Result ReportPsychology

Quality of life in family caregivers of schizophrenia patients in Spain: caregiver characteristics, caregiving burden, family functioning, and social and professional support

José Miguel Ribé, Manel Salamero, Carles Pérez Testor et al. · 2017 · International Journal of Psychiatry in Clinical Practice

OBJECTIVE: Caregivers experience physical and mental stress that ends up lowering their quality of life (QoL). Our goal was to research (a) the level of caregivers QoL; (b) the relationships between the demographic characteristics of the…

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Negative / Null Result ReportOpen accessMedicine

The impact of pharmacological and non‐pharmacological interventions to improve physical health outcomes in people with schizophrenia: a meta‐review of meta‐analyses of randomized controlled trials

Davy Vancampfort, Joseph Firth, Christoph U. Correll et al. · 2019 · World Psychiatry

We summarized and compared meta-analyses of pharmacological and non-pharmacological interventions targeting physical health outcomes among people with schizophrenia spectrum disorders. Major databases were searched until June 1, 2018. Of…

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Negative / Null Result ReportOpen accessSocial Sciences

Which came first, people or pollution? Assessing the disparate siting and post-siting demographic change hypotheses of environmental injustice

Paul Mohai, Robin Saha · 2015 · Environmental Research Letters

Although a large body of quantitative environmental justice research exists, only a handful of studies have examined the processes by which racial and socioeconomic disparities in the location of polluting industrial facilities can occur. These studies have had mixed results, we contend, principally because of methodological differences, that is, the use of the unit-hazard coincidence method as compared to distance-based methods. This study is the first national-level environmental justice study to conduct longitudinal analyses using distance-based methods. Our purposes are to: (1) determine w

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Negative / Null Result ReportEconomics, Econometrics and Finance

Testing Factor-Model Explanations of Market Anomalies

Kent Daniel · 2012 · Critical Finance Review

A set of recent papers attempts to explain the size and book-to-market anomalies with conditional CAPM or CCAPM models with economically motivated conditioning variables, or with factor models with economically motivated factors. The tests…

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Negative / Null Result ReportOpen accessMedicine

An 8-Week Self-Administered At-Home Behavioral Skills-Based Virtual Reality Program for Chronic Low Back Pain: Double-Blind, Randomized, Placebo-Controlled Trial Conducted During COVID-19

Laura García, Brandon Birckhead, Parthasarathy Krishnamurthy et al. · 2021 · Journal of Medical Internet Research

BACKGROUND: Chronic low back pain is the most prevalent chronic pain condition worldwide and access to behavioral pain treatment is limited. Virtual reality (VR) is an immersive technology that may provide effective behavioral therapeutics for chronic pain. OBJECTIVE: We aimed to conduct a double-blind, parallel-arm, single-cohort, remote, randomized placebo-controlled trial for a self-administered behavioral skills-based VR program in community-based individuals with self-reported chronic low back pain during the COVID-19 pandemic. METHODS: A national online convenience sample of individuals

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Negative / Null Result ReportOpen accessMedicine

Covered transjugular intrahepatic portosystemic shunt versus endoscopic therapy + β‐blocker for prevention of variceal rebleeding

Ingrid L. Holster, Eric T.T.L. Tjwa, Adriaan Moelker et al. · 2015 · Hepatology

UNLABELLED: Gastroesophageal variceal bleeding in patients with cirrhosis is associated with significant morbidity and mortality, as well as a high rebleeding risk. Limited data are available on the role of transjugular intrahepatic…

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Negative / Null Result ReportOpen accessMedicine

Facemasks, Hand Hygiene, and Influenza among Young Adults: A Randomized Intervention Trial

Allison E. Aiello, Vanessa Pérez, Rebecca M. Coulborn et al. · 2012 · PLoS ONE

UNLABELLED: Limited vaccine availability and the potential for resistance to antiviral medications have led to calls for establishing the efficacy of non-pharmaceutical measures for mitigating pandemic influenza. Our objective was to examine if the use of face masks and hand hygiene reduced rates of influenza-like illness (ILI) and laboratory-confirmed influenza in the natural setting. A cluster-randomized intervention trial was designed involving 1,178 young adults living in 37 residence houses in 5 university residence halls during the 2007-2008 influenza season. Participants were assigned t

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Negative / Null Result ReportSocial Sciences

Teachers’ perceptions of students’ mathematics proficiency may exacerbate early gender gaps in achievement.

Joseph R. Cimpian, Sarah Theule Lubienski, Colleen M. Ganley et al. · 2013 · Developmental Psychology

A recent wave of research suggests that teachers overrate the performance of girls relative to boys and hold more positive attitudes toward girls' mathematics abilities. However, these prior estimates of teachers' supposed female bias are…

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Negative / Null Result ReportOpen accessNeuroscience

Distinct Mechanisms for Distractor Suppression and Target Facilitation

MaryAnn P. Noonan, Nika Adamian, Alexandra C. Pike et al. · 2016 · Journal of Neuroscience

It is well established that preparatory attention improves processing of task-relevant stimuli. Although it is often more important to ignore task-irrelevant stimuli, comparatively little is known about preparatory attentional mechanisms…

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Negative / Null Result ReportOpen accessMedicine

Immune dysregulation in sepsis: experiences, lessons and perspectives

Min Cao, Guozheng Wang, Jianfeng Xie · 2023 · Cell Death Discovery

Sepsis is a life-threatening organ dysfunction syndrome caused by dysregulated host responses to infection. Not only does sepsis pose a serious hazard to human health, but it also imposes a substantial economic burden on the healthcare system. The cornerstones of current treatment for sepsis remain source control, fluid resuscitation, and rapid administration of antibiotics, etc. To date, no drugs have been approved for treating sepsis, and most clinical trials of potential therapies have failed to reduce mortality. The immune response caused by the pathogen is complex, resulting in a dysregul

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Negative / Null Result ReportOpen accessEarth and Planetary Sciences

Observed suppression of ozone formation at extremely high temperatures due to chemical and biophysical feedbacks

Allison L. Steiner, Adam J. Davis, Sanford Sillman et al. · 2010 · Proceedings of the National Academy of Sciences

Ground level ozone concentrations ([O(3)]) typically show a direct linear relationship with surface air temperature. Three decades of California measurements provide evidence of a statistically significant change in the ozone-temperature…

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Negative / Null Result ReportOpen accessMedicine

Genetic variation in transmembrane 6 superfamily member 2 and the risk of nonalcoholic fatty liver disease and histological disease severity

Silvia Sookoian, Gustavo Castaño, Romina Scian et al. · 2014 · Hepatology

UNLABELLED: We explored the role of transmembrane 6 superfamily member 2 (TM6SF2) rs58542926 C/T nonsynonymous (p.Glu167Lys) variant in genetic susceptibility to nonalcoholic fatty liver disease (NAFLD) and disease severity. A total of 361…

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Negative / Null Result ReportOpen accessMedicine

Cognitive Complaints After Breast Cancer Treatments: Examining the Relationship With Neuropsychological Test Performance

Patricia A. Ganz, Lorna Kwan, Steven A. Castellon et al. · 2013 · JNCI Journal of the National Cancer Institute

BACKGROUND: Cognitive complaints are reported frequently after breast cancer treatments. Their association with neuropsychological (NP) test performance is not well-established. METHODS: Early-stage, posttreatment breast cancer patients…

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