19,798 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.
J. B. Warren · 2020 · BMJ
Widespread prescribing has not reduced mental disability or suicide, raising questions about the assessment of evidence on effectiveness and safety of antidepressants, writes John Warren
View details →Tracie C. Rosser, Jamie O. Edgin, George T. Capone et al. · 2018 · American Journal on Intellectual and Developmental Disabilities
The cause of the high degree of variability in cognition and behavior among individuals with Down syndrome (DS) is unknown. We hypothesized that birth defects requiring surgery in the first years of life (congenital heart defects and…
View details →Felix Kwame Aveh, Dadson Awunyo‐Vitor · 2017 · Cogent Economics & Finance
This study seeks to examine the influence of firm-specific determinants of stock prices in an emerging market with particular reference to firms listed on the Ghana Stock Exchange. The study employs a data-set from all listed firms on the Ghana Stock Exchange from 2008 to 2014. The study used panel regression analysis to analyse the data. In general, the study found that accounting information, specifically earning per share, return on equity, book value and market capitalization of the firms, is relevant in explaining stock prices after the adoption of International Financial Reporting Standa
View details →Rebecca Kanive, Peter M. Nelson, Matthew K. Burns et al. · 2013 · The Journal of Educational Research
ABSTRACT The authors’ purpose was to determine the effects of computer-based practice and conceptual interventions on computational fluency and word-problem solving of fourth- and fifth-grade students with mathematics difficulties. A…
View details →Jason E. Strickhouser, Ethan Zell, Kara Harris · 2018 · Social Psychological and Personality Science
Why do White Americans perceive less racism than Black Americans? Two provocative studies on the Marley hypothesis suggest that White Americans are more ignorant of historical instances of racism than Black Americans and that ignorance of…
View details →Ngan T.K. Tran, Stella Aslibekyan, Hemant K. Tiwari et al. · 2015 · Frontiers in Genetics
Proprotein convertase subtilisin/kexin type 9 (encoded by PCSK9) plays a well-known role in the regulation of low-density lipoprotein (LDL) receptors, and an inhibitor of this enzyme is a promising new therapeutic for hyperlipidemia. Recently, animal and human studies also implicate PCSK9 genetic variation in the regulation of blood pressure. The goal of this study was to examine if common and rare polymorphisms in PCSK9 are associated with blood pressure in an African-American population at high risk for cardiovascular disease. Using genomic data assayed on the Affymetrix 6.0 array (n = 1199)
View details →José‐Antonio Daròs, Verónica Aragonés, Teresa Cordero · 2018 · Scientific Reports
Viruses have been engineered into useful biotechnological tools for gene therapy or to induce the synthesis of products of interest, such as therapeutic proteins and vaccines, in animal and fungal cells, bacteria or plants. Viroids are a particular class of infectious agents of higher plants that exclusively consist of a small non-protein-coding circular RNA molecule. In the same way as viruses have been transformed into useful biotechnological devices, can viroids be converted into beneficial tools? We show herein that, by expressing Eggplant latent viroid (ELVd) derived RNAs in Escherichia c
View details →Kateřina Hotová Svádová, Alice Exnerová, Michala Kopečková et al. · 2013 · Ethology
Abstract We tested the importance of innate wariness, avoidance learning, memory and generalization for the formation of predatory behaviour in naive great tits ( P arus major ) towards mimetic complex of four aposematic species of true…
View details →Owen M. Peters, Tatyana A. Shelkovnikova, Tatiana Tarasova et al. · 2013 · Journal of Alzheimer s Disease
Dimebon has been tested as a potential modifier of Alzheimer's disease (AD), resulting in mixed clinical trial outcomes. Originally utilized as an antihistamine, Dimebon was later found to ameliorate AD symptoms in initial human trials.…
View details →Yolandi Swart, Caitlin Uren, Paul D. van Helden et al. · 2021 · Frontiers in Genetics
Pulmonary tuberculosis (TB), caused by Mycobacterium tuberculosis , is a complex disease. The risk of developing active TB is in part determined by host genetic factors. Most genetic studies investigating TB susceptibility fail to replicate association signals particularly across diverse populations. South African populations arose because of multi-wave genetic admixture from the indigenous KhoeSan, Bantu-speaking Africans, Europeans, Southeast Asian-and East Asian populations. This has led to complex genetic admixture with heterogenous patterns of linkage disequilibrium and associated traits.
View details →Matthew S. Clement, Nathan A. Kaib, John E. Chambers · 2019 · The Astronomical Journal
Abstract Of the solar system’s four terrestrial planets, the origin of Mercury is perhaps the most mysterious. Modern numerical simulations designed to model the dynamics of terrestrial planet formation systematically fail to replicate…
View details →Yun‐Young Lee, Robert X. Black · 2013 · Journal of Geophysical Research Atmospheres
Abstract This study assesses the capability of CMIP5 models in representing primary modes of boreal winter extratropical low‐frequency variability. Rotated principal component analysis is applied to monthly mean output from historical…
View details →Michael Talledo, Giovanni López, Jeroen R. Huyghe et al. · 2010 · Journal of Medical Virology
Human T-lymphotropic virus 1 (HTLV-1)-associated myelopathy/tropical spastic paraparesis (HAM/TSP) is a complication that affects up to 5% of HTLV-1-infected individuals. Several host genetic and viral factors have been associated with the…
View details →Anja Achtziger, Carlos Alós‐Ferrer, Sabine Hügelschäfer et al. · 2015 · Social Cognitive and Affective Neuroscience
Standard economic thinking postulates that increased monetary incentives should increase performance. Human decision makers, however, frequently focus on past performance, a form of reinforcement learning occasionally at odds with rational…
View details →So-Yeon Kim, Kelly S. Giovanello · 2011 · Journal of Cognitive Neuroscience
Numerous studies have documented that older adults (OAs) do not perform as well as young adults (YAs) when task demands require the establishment or retrieval of a novel link between previously unrelated information (relational memory:…
View details →Alexis Dunkle, Ivan Dzhagalov, Y-W He · 2011 · Cell Death and Disease
Myeloid cell leukemia sequence-1 (Mcl-1) is a critical anti-apoptotic factor in T lymphocytes. However, in spite of the many pro-apoptotic proteins with proposed binding to Mcl-1, the specific interactions by which Mcl-1 regulates primary T-cell survival under different conditions have not been fully explored. Further, how different trophic cytokines modulate the specific role(s) of Mcl-1 is unknown. Here, we use genetic mouse models to dissect the roles of Mcl-1 in primary T lymphocytes. Using the inducible Mcl-1-floxed estrogen receptor-Cre fusion protein (Mcl-1(f/f)ERCre) deletion system in
View details →Sun-Hwa Shin, Won-Seok Choi · 2021 · Food Science of Animal Resources
This study examined the measurement conditions of the texture profile analysis (TPA) experiments that are typically used to measure the physical properties of sausage. As the measurement conditions (compression ratio and cross-head speed)…
View details →David H. Howard, Carolyn Kenline, Hillard M. Lazarus et al. · 2011 · Health Services Research
OBJECTIVE: In 1999, three randomized controlled trials concluded that high-dose chemotherapy followed by autologous hematopoietic stem cell transplantation (HDC/HCT) is no better than conventional chemotherapy for women with breast cancer.…
View details →Marie‐Ève Nadeau, Barbara E. Kitchell · 2011 · PubMed
This retrospective study compared the efficacy of surgery alone versus surgery in combination with chemotherapy in the treatment of canine thyroid carcinoma; potential prognostic factors were evaluated. Forty-four dogs with…
View details →Raquel Ajub Moysés, Rossana Veronica Mendoza López, Patrı́cia Maluf Cury et al. · 2013 · Clinics
OBJECTIVE: As a lifestyle-related disease, social and cultural disparities may influence the features of squamous cell carcinoma of the head and neck in different geographic regions. We describe demographic, clinical, and pathological aspects of squamous cell carcinoma of the head and neck according to the smoking and alcohol consumption habits of patients in a Brazilian cohort. METHODS: We prospectively analyzed the smoking and alcohol consumption habits of 1,633 patients enrolled in five São Paulo hospitals that participated in the Brazilian Head and Neck Genome Project - Gencapo. RESULTS: T
View details →Fabian A. Soto · 2018 · Journal of Experimental Psychology General
In a recent article, Maes et al. (2016) report the results from 15 experiments in the blocking effect, all of which failed to replicate the basic phenomenon. Whereas Maes et al. did not dispute the reality of the blocking effect, they…
View details →Iacopo Morchio, Christian Moser · 2026 · American Economic Review
Using linked employer-employee data from Brazil, we document a significant gender pay gap, which is largely attributed to women working at lower-paying employers. To interpret this fact, we develop an equilibrium search model with…
View details →Hazem Aboaid, Taimur Khalid, Abbas Hussain et al. · 2025 · Frontiers in Immunology
Head and neck squamous cell carcinoma (HNSCC) remains a challenging malignancy with suboptimal survival outcomes despite advances in surgery, radiotherapy, and chemotherapy. Immunotherapy, particularly immune checkpoint inhibitors (ICIs) targeting programmed cell death protein 1 (PD-1)/programmed cell death ligand 1 (PD-L1), has transformed treatment paradigms, yet its full potential in HNSCC is still being explored. This review evaluates the current landscape of immunotherapy in both locally advanced (LA) and recurrent/metastatic (R/M) HNSCC, discussing key clinical trials, emerging biomarker
View details →Murray G. Efford · 2026 · Ecology
Spatially explicit capture-recapture (SECR) methods are used widely to estimate animal population density and related parameters. Maximum likelihood has been applied to two flavors of the SECR model-a full model that includes absolute…
View details →Ana Carolina de Aguiar, Damila Rodrigues de Morais, Leandra P. Santos et al. · 2026 · Archivos Latinoamericanos de Nutrición
This study analyzed the effects of different concentrations of flaxseed oil (FO) on the proximate composition and the contents of alpha-linolenic acid (LNA, 18:3n-3), eicosapentaenoic (EPA, 20:5n-3), and docosahexaenoic (DHA, 22:6n-3)…
View details →Francisco Llavero, Adrián Castillo‐García, Carmen Fiuza‐Luces et al. · 2026 · PubMed
BACKGROUND: Regular exercise, particularly moderate-intensity continuous training (MICT), can improve immune function. Natural killer (NK) cells, a subset of lymphocytes that react to infections, are the most responsive innate immune cells…
View details →Aditi Mathur, Matthew H. Law, Ian L. Megson et al. · 2010 · Psychiatric Genetics
OBJECTIVES: A number of studies have reported a genetic association of the AKT1 gene with schizophrenia, although some have failed to replicate the AKT1 association. This study was undertaken to further explore the AKT1 association with…
View details →Marwa Radwan, Abdelhameed Ibrahim, M. A. Abdelsalam et al. · 2026 · Scientific Reports
Deep learning models often encounter two key challenges in developing intelligent and scalable forecasting frameworks for renewable energy systems: input feature space dimensionality and sensitivity to hyperparameter settings. These limitations increase computational cost and compromise generalization and robustness. This paper presents a hybrid deep learning-optimization framework that leverages cognitively inspired metaheuristics to address these challenges, employing the Binary iHow Optimization Algorithm (biHOW) for feature selection and its continuous counterpart, iHOW, for hyperparameter
View details →Christian Stoppe, Aileen Hill, Kenneth B. Christopher et al. · 2024 · Critical Care Medicine
Precision in critical care nutrition is paramount, as it focuses nutrition interventions on those patients most likely to benefit, or those who might potentially be harmed. Critical care nutrition must therefore be tailored to individual…
View details →S. M. Abd Elazim, M.H. Elkholy, Abdelrahman Elgarhy et al. · 2025 · Scientific Reports
Growing integration of renewable energy sources (RESs) into power grids has several advantages, including reduced greenhouse gas emissions and improved energy sustainability. Despite the related benefits, RES integration also poses actual…
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