Saturday, January 10, 2026

 

Some dogs can learn new words by eavesdropping on their owners



A new study reveals that dogs that have a unique talent for learning a vocabulary of toy names, can learn new names by overhearing their owners’ conversations




Eötvös Loránd University

Bryn - genius dog 

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Bryn, an 11-year-old male Border Collie from the UK, that knows the names of about 100 toys.

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Credit: Photo by: Helen Morgan




“Honey, will you take Luna to the P-A-R-K?” both parents and dog owners know that some words should not be spoken, but only spelled, to prevent small ears from eavesdropping on the conversation. At the age of 1.5 years toddlers can already learn new words by overhearing other people. Now, a groundbreaking study published in Science reveals that a special group of dogs are also able to learn names for objects by overhearing their owners’ interactions.

Similarly to 1.5 -year-old toddlers, that are equally good in learning from overheard speech and from direct interactions, these gifted dogs also excel in

learning from both situations

What makes this discovery remarkable

Although dogs excel at learning actions like “sit” or “down”, only a very small group of dogs have shown the ability to learn object names. These Gifted Word Learner (GWL) dogs can quickly learn hundreds of toy names through natural play sessions with their owners. Toddlers can easily learn new words through a variety of different processes. One of these processes is learning from overheard speech, where child learns new words by passively listening to interactions between adults. To do this, children must monitor the speakers’ gaze and attention, detect communicative cues, and extract the target words from a continuous stream of speech. Until now, it was unknown whether GWL dogs could also learn new object labels when not directly addressed.

“Our findings show that the socio-cognitive processes enabling word learning from overheard speech are not uniquely human,” says lead scientist DrShany Dror, from ELTE and VetMedUni universities. “Under the right conditions, some dogs present behaviors strikingly similar to those of young children.”

How the researchers found that Gifted dogs learn toy names by eavesdropping
In the first experiment, the research team tested 10 Gifted dogs in two situations:
1. Addressed condition: Owners introduced two new toys and repeatedly labeled them while interacting directly with the dog.
2. Overheard condition: The dogs passively watched as their owners talked to another person about the toys, without addressing the dog at all.

Overall, in each condition, the dogs heard the name of each new toy for a total of only eight minutes, distributed across several brief exposure sessions. To test whether the dogs had learned the new labels, the toys were placed in a different room, and the owners asked the dogs to retrieve each toy by name (e.g., “Can you bring Teddy?”)

The result: In both conditions, seven out of ten dogs learned the new labels

The dog’s performance was very accurate already at the first trials of the test, with 80% correct choices in the addressed condition and 100% in the overhearing condition. Overall, the Gifted dogs performed just as well when learning from overheard speech, as when they were directly
taught, mirroring findings from infant studies.

But that’s not all: Gifted dogs overcome one of the key challenges in learning labels

In a second experiment, the researchers introduced a new challenge: owners first showed the dogs the toys and then placed them inside a bucket, naming the toys only when they were out of the dogs’ sight. This created a temporal separation between seeing the object and hearing its name. Despite this discontinuity, most of the Gifted dogs successfully learned the new labels.

“These findings suggest that GWL dogs can flexibly use a variety of different mechanisms to learn new object labels” says senior scientist Dr. Claudia Fugazza, from ELTE University in Budapest.

What we can learn from this study

The study suggests that the ability to learn from overheard speech may rely on general socio- cognitive mechanisms shared across species, rather than being uniquely tied to human language.

However, Gifted Word Learners are extremely rare, and their remarkable abilities likely reflect a combination of individual predispositions and unique life experiences.

These dogs provide an exceptional model for exploring some of the cognitive abilities that enabled humans to develop language” says Dr. Shany Dror “But we do not suggest that all dogs learn in this way - far from it.”

Is your dog a Gifted Word Learner dog?
This research is part of the Genius Dog Challenge research project which aims to understand the unique talent that Gifted Word Learner dogs have. The researchers encourage dog owners who believe their dogs know multiple toy names, to contact them by email (geniusdogchallenge.offcial@gmail.com), Facebook or Instagram

Mental trauma succeeds 1 in 7 dog related injuries, claims data suggest



Time off work and/or loss of earnings reported in over half of cases; Explore mandatory lead use in certain public spaces to boost public safety, urge researchers



BMJ Group





Mental trauma, including specific phobias and post traumatic stress disorder (PTSD), succeeds 1 in 7 dog related injuries, while over half of cases result in the need for time off work and/or loss of earnings, suggests a study of personal injury claims data for England and Wales, published online in the journal Injury Prevention.

As most of these claims involved unrestrained dogs in non-residential locations, mandating lead use on highways and in public spaces should now be explored to boost public safety, urge the researchers.

The latest estimates for 2024 indicate that there are 13.6 million dogs in the UK. Hospital admissions for dog related injuries have risen from 4.76/100,000 people in 1998 to 18.7 in 2023 in England. In Wales, they rose from 16.3/100,000 people in 2014 to 23.7 in 2022, note the researchers.

The information on these injuries isn’t as comprehensive as it needs to be, suggest the researchers. Currently, hospital records don’t differentiate between dog bites and dog strikes (any dog-related injury not caused by a bite); not everyone who needs hospital treatment will be admitted to hospital; and there’s little or no information on the longer term effects.

While civil claims data are more informative, these claims are only pursued when there are sufficient assets to cover damages and legal costs, point out the researchers.

Most solicitors’ firms, however, collect initial contextual and impact data before making a judgement as to whether the case can be taken on. If these initial data were routinely collated and analysed, this would remove the inherent socioeconomic bias of analysing court records, they explain.

To find out if this might be a viable option, and how informative these data would be, the researchers analysed anonymised civil claims enquiry data from 1 January 2017 to 31 March 2024, provided by a specialist law firm operating throughout England and Wales.

The enquiry data contained information about the injured person, including their age and sex; date, location/land use, and context of the incident; breed and level of restraint of the dog; and consequences including physical injuries, mental trauma, medical treatment, time off work and loss of earnings.

Data were categorised into incidents involving dog bites and those involving strikes or other types of behaviour.

Analysis of the data showed that 816 dog-related incidents, comprising 842 individual claims, were recorded between January 2017 and March 2024.

Most (94%) incidents occurred in England and primarily involved dog bites (just over 91%); 7% were dog strikes.

Half of dog bite victims were male (53%), while dog strike victims were mainly female (70%). Women were more than twice as likely to be involved in a non-bite incident as men. Most of the injured didn’t know the dog involved (80%).

 

The three most common locations for dog bites were in front of a private residential property (just over 34%), on a highway or pavement (18%), and inside a private residential property (11%).

Almost half of non-bite incidents occurred in public spaces (49%), the most frequent of which were outdoor recreational areas, such as parks and nature reserves (34%), highways or pavements (23%), and ‘forestry, open land and water’ (11.5%).

Delivery workers made up over 1 in 4  (28%) of those bitten, most often during a delivery to a private residential property, when an unrestrained dog came out of the front door (12%). Other situations involved walking, exercising, playing in public without a dog (11.5%); and walking with one’s own dog (11%).

The most common circumstances for non-bite incidents were either with a dog when out walking, exercising, or playing in public (34%) or without (27%); and when a dog escaped from a private property (10%).

In both types of incident, most of the dogs weren’t restrained at the time: 79% of biting dogs; and 86% of non-bite incidents. Most dogs involved in a bite (69%) or non-bite (77.5%) incident were reported to be with their owner.

Almost all (98%) of bite, and 78% of non-bite, incidents ended up with a physical injury. Fractures comprised nearly 4% of injuries, while tissue loss or amputations made up 3%. Non-bite incidents were primarily described as fractures (73%), muscle/tendon/ligament damage (9%), and soft tissue damage (9%). The head was injured in 1 in 7 bite cases.

Most of those injured reported psychological consequences: (90%) of those who were bitten; and 76% of those who were the victims of other types of injuries.

In all, 15% (1 in 7) of all those injured were formally diagnosed with a mental illness as a result of the incident, while 6.5% were diagnosed with a specific phobia and 4% with PTSD. Other mental health consequences included anxiety, disturbed sleep, and avoidance.

Most of the physical injuries sustained resulted in a hospital visit. A quarter of those bitten, and nearly a third of those who weren’t bitten, required surgery.

Of the claimants still working when injured, 59.5% of those bitten and 56% of those who weren’t bitten took time off work, up to a maximum of 5 years. Over half of those bitten (54%) and 41.5% of those who weren’t reported loss of earnings as a result of their injuries.

There is no centralised registry of these cases across all law firms. And the researchers acknowledge that their study was based on data from one law firm and therefore may not be fully representative.

But they suggest: “These data implicate unrestrained dogs in non-residential locations as a major inciting factor for dog-related injuries, and injury prevention strategies need to explore how lead use can be effectively legislated.”

They add: “Most claimants reported that dogs were with their owners and off lead. Almost half of bite and more than 80% of non-bite incidents occurred in non-residential locations and the majority involved unrestrained dogs… These findings raise concerns over owner control.”

Current national legislation on lead control doesn’t affect public highways or urban green spaces, where most injuries occur, they argue.

The Highway Code advises that dogs should be ‘kept on a short lead when walking on the pavement, road or path shared with cyclists or horse riders’, but this is only guidance, not law. And while local authorities can introduce Public Space Protection Orders (PSPOs), it’s unclear how often these are applied or how much of a deterrent they are, they highlight.

“We recommend that national legislation is updated so that all dogs should be on a fixed- length short lead (less than 2 metres) on public highways and in urban green spaces (unless a local authority provides provisions for off-lead areas, or make areas exempt).

“This exemption provision is to ensure that the important balance between public safety and dog welfare can be achieved. This should be partnered with a nationally coordinated public communication campaign,” they conclude.

 

Study finds more than a quarter of adults worldwide could benefit from GLP-1 medications for weight loss



Mass General Brigham





The worldwide prevalence of obesity has more than doubled in the last three decades, bringing with it an increase in weight-related diseases like diabetes, cardiovascular disease, and cancers. This public health crisis strains global healthcare systems and economies, but a new study co-led by investigators from Mass General Brigham could inform strategic programs to make GLP-1 medications part of the solution.

Mass General Brigham researchers and collaborators from Washington University School of Medicine in St. Louis and Emory University's Rollins School of Public Health pooled data from 99 countries and 810,635 adults to determine how many people worldwide may benefit from GLP-1 use. They found more than one-in-four adults would be eligible for GLP-1s for weight management, with women, older individuals, and low- and middle-income countries among the most eligible. These critical metrics could be formative in policy development to deploy GLP-1s around the world to tackle obesity and its comorbidities. Their results are published in a research letter in The Lancet Diabetes & Endocrinology.

“There has never been such a potentially transformational and scalable tool for obesity, type 2 diabetes, and other health-related complications of obesity,” said co-senior author Jennifer Manne-Goehler, MD, ScD, a physician in the Division of Infectious Diseases at Brigham and Women’s Hospital and the Department of Medicine at Mass General Brigham. “For so many decades, we told everyone the problem was youyou need to move more and eat less, then you won’t struggle with this problem. GLP-1 receptor agonists have allowed us to really understand that biology is much more powerful than that, and ‘eat less, move more’ is just an oversimplified way to think about things.”

The power and promise of GLP-1s has been recognized by the World Health Organization (WHO), as they actively are working to make them standard, accessible mediations. But scaling up production and rolling out application of GLP-1s globally starts with one big question: Exactly how many people need them?  

“Given the steadily increasing prevalence of obesity, it’s not surprising that our analysis found that more than one quarter of adults around the world may be eligible for this medication,” said corresponding author Sang Gune K. Yoo, MD, who conducted this work as a research fellow in cardiology at WashU Medicine. “This medication has the potential to help many individuals, although further research is needed to better understand its long-term safety and sustainability. Access remains a major challenge as these medications are difficult to obtain in many settings. Most importantly, we must continue to invest in and develop effective non-pharmacological strategies for the prevention and treatment of obesity, an area where substantial gaps remain.”

The researchers started with household health survey data collected from 99 countries between 2008 and 2021. A total of 810,635 adults between 25 and 64 years old were pooled based on availability of diabetes biomarkers, blood pressure and BMI measurements, and hypertension and diabetes diagnostic history. Those that had a BMI of more than 30 or a BMI of more than 27 with additional hypertension, diabetes, or both, were deemed eligible for GLP-1 use.

Globally, 27% of the adults were eligible for GLP-1s for weight management—four-fifths of whom came from low- and middle-income countries. Eligibility rates were highest in Europe and North America (42.8%) and the Pacific Islands (41.0%). Women were also more likely (28.5%) than men to be eligible, as were older individuals more likely (38.3%) than their younger counterparts (17.9%).

“These socioeconomic and gender eligibility percentiles are especially staggering,” added Manne-Goehler. “As of last year, type 2 diabetes was the top cause of death for women in South Africa. There are parts of the world where women can really benefit from these medicines, and it’s our job to see through their implementation.”

“Global access to GLP-1s is a question of health equity,” said co-lead author Felix Teufel, MD, from Emory University's Rollins School of Public Health. “The goal is to ensure large-scale access for people who would benefit most – not just those easiest to reach.”

About Lancet Diabetes & Endocrinology Research Letters: Research letters published in the Correspondence section include research findings and are externally peer-reviewed. Unlike Articles containing original data, research letters are shorter and the research they contain is usually preliminary, exploratory, or reporting on early findings.

Authorship: In addition to Jennifer Manne-Goehler, Sang Gune K Yoo, and Felix Teufel, authors include Michaela Theilmann, Yajuan Si, Elhadji A Toure, Krishna Aryal, Till Bärnighausen, Abdul Bait, Marta Barreto, Pascal Bovet, Luisa C C Brant, Sarah Cuschieri, Albertino Damasceno, Farshad Farzadfar, Asher Fawwad, Pascal Geldsetzer, Ian R Hambleton, Corine Houehanou, Christina Howitt, Jutta Jørgensen, Juan P González-Rivas, Demetre Labadarios, Maja Marcus, Joao Martins, Omar Mwalim, Ramfis Nieto-Martínez, Augustine N Odili, Binur Orazumbekova, Gastón Perman, Sarah Quesnel-Crooks, Sahar Saeedi Moghaddam, Ronel Sewpal, Mafalda Sousa-Uva, Mubarak A Sulola, Kavita Venkataraman, Sebastian Vollmer, Sim Xueling, Rifat Atun, José R Banegas, Juan V A Franco, Clare Arnott, Nomathemba Chandiwana, Mark Huffman, Justine Davies, Mohammed K Ali, and David Flood.

Funding/Disclosures: Atun has grants and contracts with Novo Nordisk, Novartis Foundation, Virchow Foundation, and the Gates Foundation unrelated to the study. Atun received Honoria for lectures and presentations for Merck, unrelated to the study. Huffman has received travel support from the World Heart Federation and consulting fees from PwC Switzerland. Huffman has pending patents for heart failure polypills. Huffman has an appointment at The George Institute for Global Health, which has a patent, license, and has received investment funding with intent to commercialise fixed-dose combination therapy through its social enterprise business, George Medicines. Arnott has received honoraria and sat on the advisory boards and steering committees for AstraZeneca and Novo Nordisk. Yoo was supported by the National Institutes of Health, grant number T32 HL007081. Flood was supported by the US National Heart, Lung, and Blood Institute (award K23HL161271), the Michigan Center for Diabetes Translational Research (award P30DK092926), the University of Michigan Claude D Pepper Older Americans Independence Center (award 5P30AG024824), and the University of Michigan Caswell Diabetes Institute Clinical Translational Research Scholars Program. Manne-Goehler was supported by the US National Heart, Lung, and Blood Institute (award 1R01HL172907–01A1).

Paper cited: Yoo SGK et al. “GLP-1 receptor agonist for obesity: eligibility across 99 countries” Lancet: Diabetes and Endocrinology DOI: 10.1016/S2213-8587(25)00356-0

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About Mass General Brigham

Mass General Brigham is an integrated academic health care system, uniting great minds to solve the hardest problems in medicine for our communities and the world. Mass General Brigham connects a full continuum of care across a system of academic medical centers, community and specialty hospitals, a health insurance plan, physician networks, community health centers, home care, and long-term care services. Mass General Brigham is a nonprofit organization committed to patient care, research, teaching, and service to the community. In addition, Mass General Brigham is one of the nation’s leading biomedical research organizations with several Harvard Medical School teaching hospitals. For more information, please visit massgeneralbrigham.org.

 

Melting glaciers may release hidden antibiotic resistance into vital water sources



Biochar Editorial Office, Shenyang Agricultural University
Glaciers as reservoirs of antibiotic resistance genes: hidden risks to human and ecosystem health in a warming world 

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Glaciers as reservoirs of antibiotic resistance genes: hidden risks to human and ecosystem health in a warming world

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Credit: Huiling Ying, Yadi Zhang, Wei Hu, Wentao Wu & Guannan Mao




As climate change accelerates the melting of glaciers around the world, scientists are warning of a little-known risk flowing downstream with the meltwater: antibiotic resistance genes that have been locked in ice for thousands of years.

In a new review published in Biocontaminant, researchers report that glaciers act as long-term reservoirs of antibiotic resistance genes, or ARGs, genetic elements that allow bacteria to survive exposure to antibiotics. Once released by glacier melt, these genes can enter rivers, lakes, and ecosystems that supply drinking water and support wildlife in polar and high-altitude regions.

“Glaciers have long been viewed as pristine and isolated environments,” said corresponding author Guannan Mao of Lanzhou University. “Our review shows that they are also genetic archives that store antibiotic resistance, and climate-driven melting is turning these archives into active sources.”

Antibiotic resistance is one of the most pressing global public health challenges. While resistance is often linked to modern antibiotic use, many resistance genes are ancient and naturally occurring. Glaciers preserve microorganisms and their DNA under cold, low-nutrient conditions, sometimes for hundreds of thousands of years. As temperatures rise, these preserved microbes and genes are being released into downstream freshwater systems.

The authors synthesized findings from studies across Antarctica, the Arctic, the Tibetan Plateau, and other glacier regions. Although resistance levels in glaciers are generally lower than in heavily polluted environments, the review shows that a wide variety of resistance genes have been detected, including those linked to clinically important antibiotics.

“Glacier-fed rivers and lakes are essential water sources for millions of people,” Mao said. “Once resistance genes enter these connected systems, they can interact with modern bacteria, increasing the risk of spread through microbial communities.”

A key contribution of the study is the introduction of the “glacier continuum” concept. Rather than treating glaciers, rivers, and lakes as separate environments, the researchers argue they should be understood as a connected system through which resistance genes are transported, transformed, and potentially amplified.

As meltwater flows downstream, environmental conditions become more favorable for microbial growth and gene exchange. Rivers can act as mixing zones where resistance genes move between bacteria, while lakes may accumulate these genes and pass them through food webs, including into fish and other aquatic organisms.

“Most previous studies have looked at individual habitats in isolation,” said Mao. “That approach misses how resistance genes actually move through real landscapes. The glacier continuum allows us to understand where risks may increase and where intervention or monitoring is most needed.”

The review also highlights growing evidence that resistance genes can coexist with virulence factors, genetic traits that enable bacteria to cause disease. This combination raises concerns that glacier melt could contribute to the emergence of bacteria that are both drug resistant and potentially harmful.

Human activities further complicate the picture. Airborne pollutants, migratory birds, tourism, and scientific stations can introduce modern resistance genes into remote glacier environments. In some regions, such as the Arctic, resistance levels are significantly higher than in Antarctica, reflecting stronger human influence.

To address these risks, the authors call for coordinated monitoring programs using advanced genetic tools, such as metagenomic sequencing, to track resistance genes along the glacier continuum. They also emphasize the need for early-warning frameworks that assess ecological and health risks before resistance spreads widely.

“Climate change is reshaping microbial risks in ways we are only beginning to understand,” Mao said. “Recognizing glaciers as part of the global antibiotic resistance landscape is an important step toward protecting both environmental and human health.”

The findings underscore the importance of viewing antibiotic resistance through a One Health lens that connects environmental change, ecosystem integrity, and public health in a warming world.

 

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Journal reference: Ying H, Zhang Y, Hu W, Wu W, Mao G. 2025. Glaciers as reservoirs of antibiotic resistance genes: hidden risks to human and ecosystem health in a warming world. Biocontaminant 1: e021  

https://www.maxapress.com/article/doi/10.48130/biocontam-0025-0022 

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About Biocontaminant:
Biocontaminant (e-ISSN: 3070-359X) is a multidisciplinary platform dedicated to advancing fundamental and applied research on biological contaminants across diverse environments and systems. The journal serves as an innovative, efficient, and professional forum for global researchers to disseminate findings in this rapidly evolving field.

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Hobbies don’t just improve personal lives, they can boost workplace creativity too



University of East Anglia





As millions of us embark on New Year pledges to eat better, exercise more and learn something new, research published today suggests hobbies could do more than improve your personal life, they could make you better at work. 

The study by researchers from the University of East Anglia (UEA) and Erasmus University Rotterdam explored how ‘leisure crafting’ - intentionally shaping your free time through goal setting, learning and connection - does not just boost well-being outside the office but can spill over into creativity, engagement, and meaning at work, especially for older employees. 

Published in the journal Human Relations, the findings show that giving people simple, doable advice about how to grow through their hobbies can make a real difference in their daily lives.  

“It’s already known that hobbies are good for your well-being,” said lead author Dr Paraskevas Petrou, of Erasmus School of Social & Behavioural Sciences. 

“But our study shows that hobbies don’t just make you happier, they can also help you feel more fulfilled and creative at work. This goes beyond just relaxing or having fun - like binge-watching Netflix - and turns the hobby into something that helps people grow.” 

Co-author Prof George Michaelides, from UEA’s Norwich Business School, added: “We were surprised to see that leisure crafting had a stronger effect at work than in people’s personal lives. We had expected equal benefits in both areas. 

“One possible reason is that people who took part in our study were already fairly satisfied with their lives outside work, but their work life had more room for improvement. If what people do outside work can also have this positive impact on them in the workplace, organizations should support staff not just in their jobs, but in all areas of their lives.”  

The research team conducted a leisure crafting intervention by asking a group of almost 200 working adults to watch a short video where they were guided to make a personal plan about how to approach their hobby in a more meaningful way.  

Specifically, the participants - with an average age of 46 years old - were asked to try doing their hobby in a way that helped them feel more in control of their life. This could be by setting their own goals or doing their hobby in a way that fitted their lifestyle; learning new things through their hobby; and feeling more connected by doing their hobby with other people or asking for feedback from others. 

Using a survey the researchers checked in with participants every week, for five weeks, asking how their plan was going, what worked well, and what they might want to improve the following week. Participants were also asked about how they were feeling and behaving, both at work and in their personal life. 

Their answers were then compared to those from a control group who did not watch the video or make any plan. People who followed the leisure crafting intervention reported feeling that their work had more meaning and their job was more worthwhile. They also said they were behaving more creatively at work. Interestingly, participants over the age of 61 also reported feeling more positive emotions in general. 

Co-author Prof Laura Den Dulk, also of Erasmus University Rotterdam, said: “What makes this study different is that we didn’t just ask people how they feel. We asked them to take a small, specific action - to approach their hobby in a new way - and then we saw how it actually affected their lives week by week.  

“This is a reminder that people aren’t just employees - they’re whole individuals, and supporting their personal growth outside of work can have a positive impact inside the workplace too.” 

Dr Petrou added: “The results show that our hobbies and personal growth outside of work aren’t separate from who we are at work. What we learn and experience in our free time can make us better, more fulfilled employees.” 

The intervention study was the first to be conducted among a mature working population and to demonstrate that leisure crafting can be understood, learned and displayed by employees. 

The authors say there are several ways in which organizations can maximize the benefits of leisure crafting. For example, they could be more aware that their employees are more than just workers and help staff to realize their full potential outside work. 

This could be by making hobbies eligible for the use of employee or personal development funds and recognizing leisure-time commitments, ‘me-time’ and leisure-time projects as a life domain that is also important next to, for example, family commitments.  

They could also offer similar interventions to their employees, either as online or on-site masterclasses or personal development modules that can help employees grow in a holistic rather than in an exclusively work-related way. 

‘The leisure crafting intervention: Effects on work and non-work outcomes and the moderating role of age’, Paraskevas Petrou, Laura Den Dulk and George Michaelides, is published in Human Relations on January 9.