Negative / Null Result ReportMedicine
Lin G, Tang B, Niu Y et al. · 2026 · BMC psychology
Mathematical ability is widely recognized as a core indicator of students' cognitive development and academic achievement. However, in classroom environments where artificial intelligence (AI)-supported instruction is increasingly…
View details →DOI: 10.1186/s40359-026-04994-5 Negative / Null Result ReportMedicine
Baran EK, Oncu A, Celikten B · 2026 · Australian endodontic journal : the journal of the Australian Society of Endodontology Inc
This study evaluated effect of calcium hydroxide (CH) medicaments prepared with distilled water, glycerin and chlorhexidine (CHX) gel on dentinal tubule penetration of epoxy resin- and tricalcium silicate-based sealers using confocal laser…
View details →DOI: 10.1111/aej.70093 Failed Experiment ReportMedicine
Bennett MB, Booth AB, Murdoch EQ et al. · 2026 · Physiology & behavior
Providing foraging crumbles in mouse cages is one method used in efforts to reduce aggression in laboratory mice. However, no studies have yet examined the effects of this procedure. Therefore, we investigated whether foraging crumbles…
View details →DOI: 10.1016/j.physbeh.2026.115401 Negative / Null Result Report
Fernando K, Fernando N, Jayasekara D et al. · 2026 · Preprint
Point-of-care testing (POCT) for cardiac troponin is increasingly used to support rapid clinical decision-making, particularly in resource-limited settings. However, while many central laboratories, including those in Sri Lanka, now use…
View details →DOI: 10.20944/preprints202605.1183.v1 Negative / Null Result Report
Mandal C, Paria M · 2026 · Preprint
Abstract This study examined differences in problem-solving skill and its three dimensions-problem-solving confidence, approach-avoidance style, and personal control-among undergraduate students in relation to gender, stream of study, and…
View details →DOI: 10.21203/rs.3.rs-9339646/v1 Negative / Null Result ReportOpen accessMedicine
Jessup SC, Zald DH, Olatunji BO · 2026 · Journal of affective disorders
Endophenotypes (intermediate phenotypes) are traits hypothesized to represent genetic risk for disorders such as OCD. However, it is unclear if disgust conditioning abnormalities may function as an OCD endophenotype. The present study…
View details →DOI: 10.1016/j.jad.2026.121619 Negative / Null Result Report
Omid A, Changiz T, Ghasemi S et al. · 2026 · Preprint
Introduction Shadowing, as an educational method based on active observation, can foster a realistic understanding of professional roles and enhance the communication skills of medical students. This study aimed to design, implement, and…
View details →DOI: 10.64898/2026.06.10.26355363 Negative / Null Result Report
Acar-Sahan S, Gungor M, Eskiyurt B et al. · 2026 · Preprint
Abstract Purpose Carbetocin and oxytocin are widely used uterotonic agents for postpartum hemorrhage prevention; however, sequential administration may influence uterine contractility. Evidence regarding their combined and sequential…
View details →DOI: 10.21203/rs.3.rs-9505322/v1 Negative / Null Result ReportMedicine
Kong K, Qiang Z, Yang Y et al. · 2026 · The international journal of medical robotics + computer assisted surgery : MRCAS
Background Surgical robots offer improved precision and stability for laparoscopy; nevertheless, their limited portability and high cost impede broader clinical applications. Methods This paper proposes a hand-held surgical robot with an…
View details →DOI: 10.1002/rcs.70176 Negative / Null Result ReportMedicine
Serretti A · 2026 · Journal of affective disorders
Background Depressive symptoms are major determinants of outcome in bipolar disorder. We examined whether baseline anhedonia-related symptom severity was associated with subsequent clinical wellness. Methods We analyzed longitudinal data…
View details →DOI: 10.1016/j.jad.2026.122119 Negative / Null Result Report
Mahboub S, Elgammal A, Elaw R et al. · 2026 · Preprint
Abstract Background Chronotype, an individual's natural preference for sleep-wake timing, influences physiological processes and health outcomes. Evening chronotype has been associated with poorer sleep quality and reduced health-related…
View details →DOI: 10.21203/rs.3.rs-9955044/v1 Negative / Null Result ReportMedicine
Boasen J, Giroux F, Duchesneau MO et al. · 2026 · Scientific reports
Characterizing brain activities underlying text availability in an ecologically valid context and identifying whether aspects of these activities are influenced by one's state of cognitive absorption (CA) are important yet unexplored lines…
View details →DOI: 10.1038/s41598-026-56620-4 Negative / Null Result ReportMedicine
Bellmann A, Oostwoud Wijdenes L, Medendorp WP · 2026 · Journal of neurophysiology
Everyday tasks often involve multiple reaching movements in a sequence, where the choices made for one movement also affect the conditions for subsequent movements. Previous research indicates that humans are capable of planning ahead to…
View details →DOI: 10.1152/jn.00457.2025 Negative / Null Result Report
Ispas A, Brunet D, Saadi R et al. · 2026 · Preprint
Background: Conduction disturbances and the subsequent need for permanent pacemaker implantation (PPMI) remain a major limitation of transcatheter aortic valve replacement (TAVR) with self-expanding transcatheter heart valves (SE-THVs).…
View details →DOI: 10.20944/preprints202606.0545.v1 Negative / Null Result ReportMedicine
Harriger JA, Brown SA, Chung HG et al. · 2026 · Body image
This study investigated the effects of exposure to unfiltered vs. filtered idealized TikTok videos in a sample of 299 adult women, ages 18-83-years-old. Participants were randomly assigned to view idealized unfiltered, idealized filtered,…
View details →DOI: 10.1016/j.bodyim.2026.102030 Negative / Null Result ReportMedicine
Moon C, Attinger E · 2026 · Psychological reports
Drug misuse is a longstanding public health issue that has prompted research on what factors influence an individual's intent to use. Personality traits, particularly narcissism, have been identified as significant predictors of drug use.…
View details →DOI: 10.1177/00332941261446929 Negative / Null Result Report
Commuri V, Fisher C, Karunathilake IMD et al. · 2026 · Preprint
Older adults often report increased difficulty understanding speech in noisy listening environments. These difficulties are thought to arise from neurophysiological changes associated with aging, including at the level of cortex. Speech…
View details →DOI: 10.64898/2026.06.06.730575 Negative / Null Result ReportMedicine
Widmann K, Hager M, Windischbauer LM et al. · 2026 · Gynecological endocrinology : the official journal of the International Society of Gynecological Endocrinology
Objective Women with Turner syndrome (TS) are at increased risk of reduced bone mineral density (BMD) due to primary ovarian insufficiency. This study aimed to assess longitudinal changes in BMD in TS patients receiving oral or transdermal…
View details →DOI: 10.1080/09513590.2026.2692740 Negative / Null Result Report
Vitiello L, Proietti S, Limongi D et al. · 2026 · Preprint
Chronic obstructive pulmonary disease (COPD) is characterized by systemic inflammation, immune dysregulation, and increased susceptibility to infections. Obesity may influence these processes and has been proposed as a potential…
View details →DOI: 10.20944/preprints202606.1135.v1 Negative / Null Result ReportMedicine
Park JB, Lee JH, Kim YJ et al. · 2026 · Paediatric anaesthesia
Background Binaural beats, which induce brainwave entrainment, have reduced anxiety and sedative use. This study evaluated the effect of binaural beats on emergence delirium (ED) in children undergoing strabismus surgery under general…
View details →DOI: 10.1002/pan.70137 Negative / Null Result ReportMedicine
Gao R, Zhang X, Li G et al. · 2026 · BMC cancer
Background Betel nut chewing (BNC) is a prevalent risk factor for oral squamous cell carcinoma (SCC) in South and Southeast Asia, yet its influence on response to neoadjuvant immunochemotherapy remains unexplored. This study aimed to…
View details →DOI: 10.1186/s12885-026-16348-w Negative / Null Result ReportMedicine
Yoon S, Chang Y, Chang OD et al. · 2026 · Child maltreatment
Understanding how protective factors and strengths operate to promote positive youth development is critical for supporting youth who have experienced childhood maltreatment. Guided by the Resilience Portfolio Model, including the…
View details →DOI: 10.1177/10775595261458381 Negative / Null Result ReportMedicine
Çelik B, İşevi C, Pirzirenli MG et al. · 2026 · The Journal of surgical research
Introduction This study evaluated the effect of preoperative smoking cessation duration on postoperative complications after lung cancer surgery. Materials and methods In this single-center prospective cohort study, 156 patients undergoing…
View details →DOI: 10.1016/j.jss.2026.05.005 Negative / Null Result ReportMedicine
Eraghi NG, Sefati N, Ghaffari MK et al. · 2026 · Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association
Alcohol Use Disorder (AUD) is a complex condition marked by physical and psychological dependence, often accompanied by lasting changes in brain regions such as the hippocampus that contribute to memory and cognitive impairments. Emerging…
View details →DOI: 10.1016/j.fct.2026.116216 Negative / Null Result ReportMedicine
Umutoni V, Eavou R, Almirol E et al. · 2026 · Journal of acquired immune deficiency syndromes (1999)
Background Black and Hispanic/Latino sexual gender minorities are disproportionately affected by HIV. Structural determinants of health, such as health insurance coverage, drive care engagement and improve HIV care outcomes. Methods Black…
View details →DOI: 10.1097/qai.0000000000003788 Negative / Null Result Report
Costa R, Arantes-Olive S, Ferreira JC et al. · 2026 · Preprint
Background: The aim of this study is to evaluate the influence of biomimetic remineralization on the performance of four universal adhesive systems applied to artificially caries-affected dentin before and after artificial aging. Methods:…
View details →DOI: 10.20944/preprints202605.1656.v1 Negative / Null Result ReportMedicine
Rusu RV, Rusu DO, Delcea C · 2026 · Behavioral sciences (Basel, Switzerland)
Adverse childhood experiences (ACEs) have been associated with increased vulnerability to depressive symptoms during pregnancy and may also be related to emerging prenatal relational processes. This cross-sectional study examined whether…
View details →DOI: 10.3390/bs16060911 Negative / Null Result ReportMedicine
Friedrich L, Walgenbach M, O Connor M et al. · 2026 · Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing
BACKGROUND: Left ventricular lead (LVL) implantation can be challenging in Cardiac Resynchronization Therapy (CRT). Therefore, contrast is commonly used to visualize the coronary venous system. However, contrast use is correlated with…
View details →DOI: 10.1007/s10840-026-02283-0 Negative / Null Result ReportMedicine
Barrett AE, Soulie B, Mimbs H et al. · 2026 · International journal of aging & human development
Drowsy driving is a major cause of motor vehicle injuries and fatalities, yet little is known about its impact on older adults. This group may face heightened risk due to age-related sleep issues. Using survey data from 3,411 Floridians…
View details →DOI: 10.1177/00914150261445628 Negative / Null Result ReportMedicine
Garrido-Castro AC, Graham N, Li KX et al. · 2026 · Nature communications
This multi-institutional randomized phase II clinical trial (NCT03414684) investigated the efficacy and safety of carboplatin plus nivolumab compared to carboplatin in metastatic triple-negative breast cancer (mTNBC). The primary endpoint…
View details →DOI: 10.1038/s41467-026-73085-1 