11,317 real negative results, null findings, and replication failures in Medicine · 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.
Zeng S, Cheng W · 2026 · Medicine
The association between viral infections and subacute thyroiditis (SAT) has been recognized, yet whether a genetic causal relationship exists between them remains unclear. To address this, we conducted a two-sample Mendelian randomization…
View details →Liu Z, Pan H, Lei H et al. · 2026 · Brain sciences
Objectives: Females are often underrepresented in preclinical fear research due to concerns over estrous cycle related variability. This study examined whether there were differences between female and male C57BL/6J mice in terms of fear…
View details →Schell C, Godinho A, Cunningham JA · 2026 · Substance abuse treatment, prevention, and policy
BACKGROUND: Invitation letters can be the first point of contact between research staff and potential participants and a number of modifiable variables have been studied to improve their effectiveness. The aim of this analysis was to…
View details →Dong J, Leger K, Lee AJ et al. · 2024 · Evolutionary psychology : an international journal of evolutionary approaches to psychology and behavior
Many researchers have proposed that women perceive men with masculine face shapes to be less suitable as parents and long-term partners than men with feminine face shapes, causing women to find masculine men more attractive for short-term…
View details →Severijnen GGA, Bosker HR, McQueen JM · 2025 · Psychonomic bulletin & review
Speech is highly variable in rate, challenging the perception of sound contrasts that are dependent on duration. Listeners deal with such variability by perceiving incoming speech relative to the rate in the surrounding context. For…
View details →Mark S, Schwartenbeck P, Hahamy A et al. · 2026 · eLife
Humans' ability for generalization is outstanding. It is flexible enough to identify cases where knowledge from prior tasks is relevant, even when many features of the current task are different, such as the sensory stimuli or the size of…
View details →Floridi G, Gargiulo M, Aburto JM · 2026 · Population research and policy review
Since 2006, Mexico has experienced a surge in homicides due to national policies and international influences on drug trafficking activities. Although the effects of the so-called "Drug War" have been extensively studied in demography and…
View details →Grossman A · 2026 · Frontiers in neuroscience
Background Autism spectrum disorder (ASD) prevalence has increased markedly across high-income countries, including Norway, yet environmental drivers remain poorly understood. We hypothesized that historical lead exposure may inversely…
View details →Sesay FA, Oware K, Violette LR et al. · 2026 · The Journal of infectious diseases
Doxycycline treats and prevents several bacterial and parasitic infections and has been proposed as a possible treatment for Trichomonas vaginalis. Nested in a trial of doxycycline postexposure prophylaxis among cisgender women in Kenya,…
View details →Hu C, Xiao Q, Mei JJ et al. · 2026 · Medicine
The aim of this study was to use Mendelian randomization (MR) method to deeply explore the possible causal association between depression and rotator cuff injury. Using pooled data from genome-wide association studies covering large-scale…
View details →Guitard D, Neath I, Surprenant AM · 2026 · Memory & cognition
The word-length effect refers to the finding that memory on many short-term/working memory tasks is better for words with fewer syllables than words with more syllables. The standard account attributes this result to a combination of decay…
View details →Kipping R, Anne Simpson S, Hannam K et al. · 2026 · The Lancet regional health. Europe
Background Early childhood education and care (ECEC) provision is widespread. NAPSACC UK is an intervention in ECECs designed to improve nutrition and physical activity policies, practice and provision through ECEC staff workshops,…
View details →Huang S, Zhang D, Zhuang J · 2026 · Behavioral sciences (Basel, Switzerland)
Prosocial risk-taking is defined as engagement in altruistic behaviors that may have personal costs. Emerging research indicates that testosterone-a gonadal steroid hormone-is linked to behaviors aimed at promoting one's social status. In…
View details →Mingolo S, Prpic V, Cipora K et al. · 2026 · Psychological research
The SNARC effect indicates that numbers are mapped from left to right as in a mental number line. Accumulating evidence suggests that it could be attributed both to the magnitude or to the order of numbers, but the role of these two…
View details →Manippa V, Brancucci A, Rivolta D et al. · 2023 · Food Quality and Preference.
Displaying foods congruently with the healthy-left/unhealthy-right (HL/UR) horizontal mental representation could, through self-control facilitation, lead to healthier food choices. Here, by using two versions of the same on-line menu, we…
View details →Smirnova I, Shannon A, Teplitskiy M · 2025 · Research policy
In many industries trainees often seek careers different from their mentors. For example, many PhD students seek non-academic careers. Anecdotally, mentors invest less in different-career trainees, but causal evidence is lacking. To fill…
View details →Greenburgh A, Zamperetti L, Bell V et al. · 2024 · Royal Society open science
Paranoia is associated with variation in social behaviour, such as lower inclination to trust others or to behave generously in economic game settings. Such variation may stem, in part, from a reduced tendency to socially identify with…
View details →Howes MT, King J, Rosengren RJ · 2025 · Nutrients
Background/objectives Metabolic (dysfunction)-associated steatotic liver disease (MASLD), the hepatic consequence of metabolic syndrome, affects 30% of the global population. Studies in animals and humans investigating the effect of…
View details →Taylor LM, Parsons J, Moyes SA et al. · 2024 · Journal of the American Medical Directors Association
Objectives To investigate the effect of an exercise program on falls in intermediate and high-level long-term care (LTC) residents and to determine whether adherence, physical capacity, and cognition modified outcomes. Design Randomized…
View details →Hassan M, Al Balah O, Hegazy A et al. · 2026 · Journal of the Saudi Heart Association
Background Transcranial photobiomodulation (TPBM) using near-infrared (NIR) light is a novel, non-invasive neuromodulation strategy with potential to enhance neurorecovery. While preclinical studies are promising, clinical evidence in…
View details →MacMillan MB, Neath I, Roodenrys S · 2024 · Memory & cognition
A word's orthographic neighborhood is the set of words that differ from the target word by one letter. Both Roodenrys (2009) and Robert et al. (Journal of Psycholinguistic Research, 44, 119-125, 2015) posit that orthographic neighbors are…
View details →Woodbury J, Offerdahl E · 2024 · CBE life sciences education
Team-based learning (TBL) is a highly intense active learning pedagogy that uses a cycle of preclass preparation, formative assessment for readiness, mini-lectures, and complex team exercises. Consistent with the literature on active…
View details →Bickerstaff L, Trinkl J, Munkwitz S et al. · 2025 · F1000Research
Background The photic sneeze reflex (PSR) is a common but underexplored phenomenon where bright light triggers sneezing, affecting ~30% of the population. This study aimed to characterise the light conditions inducing PSR. Methods One male…
View details →Bahadoran S, Vaeznia S, Hassanpour H · 2026 · Veterinary and animal science
This study evaluated the effects of dietary Echinacea purpurea supplementation on immune regulation, oxidative stress, and cellular aging in broiler chickens reared at high altitude (2100 m). One hundred and eight day-old male Ross 308…
View details →Leger K, Dong J, DeBruine LM et al. · 2023 · Scientific reports
Perceptions of the trustworthiness of faces predict important social outcomes, including economic exchange and criminal sentencing decisions. However, the specific facial characteristics that drive trustworthiness perceptions remain poorly…
View details →Yoon S, Rottenberg J · 2025 · BMC psychology
Background Does what a person desires to feel (affect valuation) predict their future affective reaction to salient life events? We tested this idea in the context of an exam, a key achievement-oriented event for college students. Methods…
View details →Singstock M, Abdul Khader AHS, Wayant C et al. · 2026 · The oncologist
Background Oncology clinical trials, regardless of success in meeting their primary endpoint, often suffer from spin-the misrepresentation of research findings. Despite dramatic improvements in myeloma outcomes, numerous recent myeloma…
View details →Cusimano C, Kim J, Wong J · 2025 · Proceedings of the National Academy of Sciences of the United States of America
It is common to say that people feel entitled to rewards-they think they have earned or deserve them-based on their effort and achievement. However, effort and achievement draw on different principles to justify reward. They can also…
View details →Nakata Y, Watanabe Y, Ozaki A · 2026 · Cureus
Background The purpose of this study was to evaluate whether the workstyle reform, aimed at improving physician health and safety, achieved a secondary goal of enhancing surgical productivity by applying the Malmquist Index (MI) model. We…
View details →Xu H, He Y · 2026 · BMC psychology
BACKGROUND: Interparental relationship quality and attachment are theorized to be associated with young adults’ marital attitudes, yet evidence in Chinese cultural contexts is mixed. We tested whether interparental conflict versus divorce…
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