Wednesday, January 22, 2025

 

Recommendations for studying the impact of AI on young people's mental health  proposed by Oxford researchers




University of Oxford




A new peer-reviewed paper from experts at the Oxford Internet Institute, University of Oxford, highlights the need for a clear framework when it comes to AI research, given the rapid adoption of artificial intelligence by children and adolescents using digital devices to access the internet and social media. 

Its recommendations are based on a critical appraisal of current shortcomings in the research on how digital technologies’ impact young people’s mental health, and an in-depth analysis of the challenges underlying those shortcomings.  

The paper, “From Social Media to Artificial Intelligence: Improving Research on Digital Harms in Youth,” published 21 January in The Lancet Child and Adolescent Health, calls for a “critical re-evaluation” of how we study the impact of internet-based technologies on young people’s mental health, and outlines where future AI research can learn from several pitfalls of social media research. Existing limitations include inconsistent findings and a lack of longitudinal, causal studies.  

The analysis and recommendations by the Oxford researchers are divided into four sections:   

  • A brief review of recent research on the effects of technology on children’s and adolescents’ mental health, highlighting key limitations to the evidence.  
  • An analysis of the challenges in the design and interpretation of research that they believe underlie these limitations.  
  • Proposals for improving research methods to address these challenges, with a focus on how they can apply to the study of AI and children’s wellbeing.  
  • Concrete steps for collaboration between researchers, policymakers, big tech, caregivers and young people.  

“Research on the effects of AI, as well as evidence for policymakers and advice for caregivers, must learn from the issues that have faced social media research,” said Dr Karen Mansfield, postdoctoral researcher at the OII and lead author of the paper. “Young people are already adopting new ways of interacting with AI, and without a solid framework for collaboration between stakeholders, evidence-based policy on AI will lag behind, as it did for social media.”  

The paper describes how the impact of social media is often interpreted as one isolated causal factor, which neglects different types of social media use, as well as contextual factors that influence both technology use and mental health. Without rethinking this approach, future research on AI risks getting caught up in a new media panic, as it did for social media. Other challenges include measures of social media use that are quickly outdated, and data that frequently excludes the most vulnerable young people.  

The authors propose that effective research on AI will ask questions that don’t implicitly problematise AI, ensure causal designs, and prioritise the most relevant exposures and outcomes.  

The paper concludes that as young people adopt new ways of interacting with AI, research and evidence-based policy will struggle to keep up. However, by ensuring our approach to investigating the impact of AI on young people reflects the learnings of past research’s shortcomings, we can more effectively regulate the integration of AI into online platforms, and how they are used.  

“We are calling for a collaborative evidence-based framework that will hold big tech firms accountable in a proactive, incremental, and informative way,” said Professor Andrew Przybylski, OII Professor of Human Behaviour and Technology and contributing author to the paper. “Without building on past lessons, in ten years we could be back to square one, viewing the place of AI in much the same way we feel helpless about social media and smartphones. We have to take active steps now so that AI can be safe and beneficial for children and adolescents.”  

Notes for Editors     

For more information and interview requests, please contact: Sara Spinks / Veena McCoole, Media and Communications Manager. T: 01865 280528 E: press@oii.ox.ac.uk   

The full paper, “From Social Media to Artificial Intelligence: Improving Research on Digital Harms in Youth,” will be published in The Lancet Child and Adolescent Health at 23:30 GMT / 18:30 ET Tuesday 21 January 2025 at https://www.thelancet.com/journals/lanchi/article/PIIS2352-4642(24)00332-8/fulltext 

To view a copy of the paper before this under embargo, contact Sara Spinks / Veena McCoole, Media and Communications Manager. T: 01865 280528 E: press@oii.ox.ac.uk   

About the Research   

The authors would like to thank Thomas McGrath for help with extraction of details from the reviewed papers, who was supported by a small grant to KLM from the National Institute for Health Research - Oxford Health Biomedical Research Centre – Mental Health in Development theme. TH is supported by the Oxford Internet Institute Research Programme on AI, Government and Politics, funded by the Dieter Schwarz Foundation. Funders of the Jme of individual authors had no role in the content of the manuscript or the decision to submit for publication to Lancet Child and Adolescent Health. All authors had full access to the manuscript and any data relevant to the review and accept responsibility to submit for publication.  

KLM, AKP and SG are supported by a grant from the Huo Family Foundation. AKP, NB, MV, and TH are supported by a grant from the Economic and Social Research Council (ESRC) [ES/W012626/1]. AKP is also supported by an additional ESRC grant [ES/T008709/1] and receives funding as a consultant scientific advisor to the Sync Digital Wellbeing Program. AKP and MV are contributing to an ongoing collaboration between the Center for Open Science and Meta. These contributions were solicited by the Center for Open Science and were not subject to approval of Meta. No promises of funding, professional or personal opportunities have been made in exchange for lending Jme and expertise to this project. MV has served as a non-paid panel member for Meta and K-Games.  

About the Oxford Internet Institute (OII)   

The Oxford Internet Institute (OII) is a multidisciplinary research and teaching department of the University of Oxford, dedicated to the social science of the Internet. Drawing from many different disciplines, the OII works to understand how individual and collective behaviour online shapes our social, economic and political world. Since its founding in 2001, research from the OII has had a significant impact on policy debate, formulation and implementation around the globe, as well as a secondary impact on people’s wellbeing, safety and understanding. Drawing on many different disciplines, the OII takes a combined approach to tackling society’s big questions, with the aim of positively shaping the development of the digital world for the public good. https://www.oii.ox.ac.uk/   

About the University of Oxford     

Oxford University has been placed number one in the Times Higher Education World University Rankings for the ninth year running, and number two in the QS World Rankings 2022. At the heart of this success are the twin-pillars of our ground-breaking research and innovation and our distinctive educational offer. Oxford is world-famous for research and teaching excellence and home to some of the most talented people from across the globe.    

Oxford is world-famous for research and teaching excellence and home to some of the most talented people from across the globe. Our work helps the lives of millions, solving real-world problems through a huge network of partnerships and collaborations. The breadth and interdisciplinary nature of our research alongside our personalised approach to teaching sparks imaginative and inventive insights and solutions. 

Through its research commercialisation arm, Oxford University Innovation, Oxford is the highest university patent filer in the UK and is ranked first in the UK for university spinouts, having created more than 300 new companies since 1988. Over a third of these companies have been created in the past five years. The university is a catalyst for prosperity in Oxfordshire and the United Kingdom, contributing £15.7 billion to the UK economy in 2018/19, and supports more than 28,000 full time jobs. 

 

Empty headed? Largest study of its kind proves ‘bird brain’ is a misnomer



Flinders University
bird brain 

image: 

Digitally reconstructed skull and endocast of an Australian hobby falcon (Falco longipennis).

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Credit: Aubrey Keirnan (Flinders University)




It’s difficult to know what birds ‘think’ when they fly, but scientists in Australia and Canada are getting some remarkable new insights by looking inside birds' heads.

Evolutional biologists at Flinders University in South Australia and neuroscience researchers at the University of Lethbridge in Canada have teamed up to explore a new approach to recreating the brain structure of extinct and living birds by making digital ‘endocasts’ from the area inside a bird skeleton’s empty cranial space.

Published today in Biology Letters, the study led by the ‘Bones and Diversity Lab’ at Flinders and the Iwaniuk Lab at the University of Lethbridge in Alberta has found that dry museum skulls of long-dead birds can provide surprisingly detailed information on a species’ brain, including the size of the birds’ main computation centres for smartness and nimbleness.

The discovery was made possible by comparing historical microscopic sections of the brain with digital imprints of the bird’s inside braincase, in the largest such study of its kind covering 136 species.

“This showed that the two correspond so closely that there is no need for the actual brain to estimate a bird’s brain proportions,” says the lead author, Flinders University PhD Aubrey Keirnan.

“While ‘bird brain’ is often used as an insult, the brains of birds are so large that they are practically a braincase with a beak. We decided to test if this also means that the brain’s imprint on the skull reflects the proportions of two crucial parts of the actual brain.”

Joined by researchers at the Department of Neuroscience at the University of Lethbridge in Alberta, Canada, the team scanned the skulls of 136 bird species for which they also had microscopic brain sections or literature data.

This allowed them to determine if the volume of two crucial brain parts, the forebrain and the cerebellum, corresponds with the surface areas of the endocasts.

The extremely tight match between the ‘real’ and the ‘digital’ brain volumes surprised the researchers.

“We used computed microtomography to scan the bird skulls. This allows us to digitally fill the brain cavity to get the brain’s imprint, also called an ‘endocast’,” says senior co-author Associate Professor Vera Weisbecker, from Flinders University’s College of Science and Engineering.

“The correlations are nearly 1:1, which we did not expect. But this is excellent news because it allows us to gather insight into the neuroanatomy of elusive, rare and even extinct species without ever even seeing their brains.”

Associate Professor Vera Weisbecker says that advanced digital technologies are providing ever-improving access to some of the oldest puzzles in animal diversity.

“The great thing about digital endocasts is that they are non-destructive. In the old days, people needed to pour liquid latex into a brain case, wait for it to set, and then break the skull to get the endocast.

“Using non-destructive scanning not only allows us to create endocasts from the rarest of birds, it also produces digital files of the skulls and endocasts that can be shared with scientists and the public.”

With an extensive background in bird brain research, University of Lethbridge Professor Andrew Iwaniuk, who co-led this study with Associate Professor Weisbecker, says he did not expect such a clear correlation between brain tissue and endocasts.

“While most of the telencephalon (outer part of the forebrain) is visible from the outer surface, a substantial portion of the cerebellum is obscured by this region. Additionally, the avian cerebellum has ‘folds’ which are often obstructed by a large blood vessel called the occipital sinus,” says Professor Iwaniuk.

“Given that the degree of obscurity can vary between species, I did not expect a strong correlation between endocast surface area and brain volume across all species.”

Professor Iwaniuk adds that the study provides support for existing research by other scientists – including for  critically endangered modern birds or perhaps even species gone extinct.

However, the team says that it remains to be seen how well the data can be applied to dinosaurs, which are the birds’ closest extinct relatives.

“For example, crocodiles are the closest living relatives of birds, but their brains look nothing like that of a bird - and their brains do not fill the braincase enough to be as informative,” adds Ms Keirnan.

The article, Avian telencephalon and cerebellum volumes can be accurately estimated from digital brain endocasts (2025) by Aubrey R Keirnan, Felipe Cunha, Sara Citron, Gavin Prideaux, Andrew N Iwaniuk and Vera Weisbecker will be published in Biology Letters (a Royal Society journal) DOI: 10.1098/rsbl.2024.0596

https://doi.org/10.1098/rsbl.2024.0596

Photos: courtesy Aubrey Keirnan Press Release - Keirnan et al. 2025 - Dropbox



Digitally reconstructed skull and endocast of a Collared Sparrowhawk (Accipiter cirrocephalus; left) and the brain of a Cooper's hawk (Astur cooperii; right) showing the similarities between endocasts and brains of two related species.

Credit

CC-BY Aubrey Keirnan (skull) Andrew Iwaniuk (brain)

The closest living relatives of birds, crocodillian skeletons photographed at the Gallery of Palaeontology and Comparative Anatomy, Paris.

Credit

Aubrey Keirnan (Flinders University)

A masked lapwing (Vanellus miles) and its reflection in the water.

Credit

CC-BY Michael Jury of Mykelphotography


timelapse [VIDEO] | 
Timelapse of PhD student Aubrey Keirnan mounting a serially sectioned bird brain onto slides so that they can be measured and analysed under a microscope at the Iwaniuk lab in Canada.

 

Wild baboons not capable of visual self-awareness when viewing their own reflection


Wild baboons failed to demonstrate visual self-recognition in a test carried out by anthropologists at UCL.



University College London

Chacma baboons in Tsaobis Nature Park, Namibia (c) Dr Alecia Carter 

video: 

Chacma baboons in Tsaobis Nature Park, Namibia

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Credit: Dr Alecia Carter



Published today in Proceedings of the Royal Society B, the study found that while the baboons noticed and responded to a laser mark shone on their arms, legs and hands, they did not react when they saw, via their mirror reflection, the laser on their faces and ears. 

It was the first time a controlled laser mark test has been done on these animals in a wild setting and strengthens the evidence from other studies that monkeys don’t recognise their own reflection. 

The researchers observed 120 Chacma baboons in Tsaobis Nature Park, Namibia, between May and October 2021 to better understand self-awareness among wild non-hominid primates, who have previously been tested almost exclusively in captivity. 

Study author Dr Alecia Carter (UCL Anthropology) said: “We define self-awareness as ‘the capacity to become the object of your own attention’ and we test this capacity by assessing an individual’s ability to identify an image of themselves. 

“The Chacma baboons we observed in Tsaobis Nature Park certainly enjoyed using the mirrors as a new toy, but throughout our study they didn’t quite understand that the mirror’s reflection represented their own bodies and that the laser mark in the mirror image was, indeed, on themselves. 

Dr Carter continued: “Anthropologists have been trying to measure self-awareness in animals for 50 years, but studies have lacked control conditions and focused on small numbers of animals raised in captivity. Our study is the first controlled laser mark test to be conducted in a wild setting and we hope it will act as a framework for future visual self-recognition studies.” 

In Namibia, the researchers began by allowing the baboons a period of mirror exposure to learn about the reflective surface. Reflective surfaces are uncommon in the baboons’ arid natural habitat, in contrast to primates raised in captivity who may have had more exposure to their own reflection.   

As shown in the footage, a red or green laser pointer was first shone on a visible part of the baboon’s body, such as their hand or foot, to determine whether the baboon would investigate a mark visible on their own bodies. The baboons found the mark visually compelling, showing their curiosity by touching and scratching the mark.  

The laser was then shone on a part of their body the baboon could not see unaided, such as their ear or cheek. While sat in front of a mirror, the baboons did not react or respond to the laser mark in the same way, suggesting they did not identify the baboon in the mirror as themselves. 

Overall, interest in the lasers decreased with the age of the baboons and was greater among males than females. They also found that the baboons responded more to the green, rather than the red laser mark. The researchers compared a total of 361 laser experiments across 120 baboons. 

Corresponding author Esa A. Ahmad said: “Our study provides a fantastic framework for scientists and anthropologists to continue researching the self-awareness of non-hominid primates in their natural setting. 

“As the baboons didn’t touch the marks when viewed indirectly, this research confirms that monkeys don't spontaneously recognise themselves in a mirror. But, given the monkeys quickly familiarised themselves with their mirror image, it also suggests that they don't consider their reflection to be a stranger.” 

Ethical permission to conduct the research was granted by the Namibian National Commission on Research Science and Technology and the Zoological Society of London Ethics Committee.  

Notes to Editors 

For more information or to speak to the researchers involved, please contact Sophie Hunter, UCL Media Relations. T: +44 (0)7747 565 056, E: sophie.hunter@ucl.ac.uk   

Alecia Carter, Guy Cowlishaw, Vittoria Roatti, Axelle Delaunay, Elise Huchard, Helen Reiderman, Esa A. Ahmad, ‘Wild recognition: conducting the mark test for mirror self-recognition on wild baboons’ will be published in Proceedings of the Royal Society B on Wednesday 22 January 2025, 00:01 UK time and is under a strict embargo until this time. 

The DOI for this paper will be https://doi.org/10.1098/rspb.2024.1933 

Additional material 

Video clips of the baboons can be downloaded - https://we.tl/t-UjmjTaSovG  

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Since 1826, we have championed independent thought by attracting and nurturing the world's best minds. Our community of more than 50,000 students from 150 countries and over 16,000 staff pursues academic excellence, breaks boundaries and makes a positive impact on real world problems. 

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We were the first in England to welcome women to university education and that courageous attitude and disruptive spirit is still alive today. We are UCL. 

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Here’s what’s causing the Great Salt Lake to shrink, according to PSU study



Portland State University




The Great Salt Lake, the largest saltwater lake in the Western Hemisphere, reached historic low levels in 2022, raising economic, ecological and public health concerns for Utah. New research from Portland State is believed to be the first peer-reviewed study that quantifies the contributing factors to the record low water volume levels, which the researchers say is important for anticipating and managing future lake changes.

“The lake has a lot of social and economic relevance for the region and Utah,” said Siiri Bigalke, the lead author and a Ph.D. candidate in PSU’s Earth, Environment and Society program who built on research she started while a master’s student at Utah State University. “It provides over $1.9 billion in annual economic revenue, serves as a vital feeding ground for millions of migratory birds and enhances snowfall over the Wasatch Mountain Range” — home to 11 world-class ski resorts which are a big reason why the 2034 Winter Olympics are returning to Salt Lake City.

Bigalke and co-authors Paul Loikith, an associate professor of geography and director of PSU’s Climate Science Lab, and Nick Siler, an associate professor in the College of Earth, Ocean, and Atmospheric Sciences at Oregon State University, developed and applied a model that simulates lake volume change year over year from water inputs primarily from streamflow into the lake and precipitation onto the lake and output from water evaporating off the lake. 

“We developed a model that created alternate scenarios where only one of the input or output variables changed as observed in order to isolate the relative contributions of streamflow, precipitation and evaporation to the record low volume in 2022,” Bigalke said.

The decline in lake levels leading up to 2022 has been widely attributed to low stream flows from the lake’s three major tributaries, likely due to some combination of drought, water diversions, and climate change. However, the present study found that lower streamflows only accounted for about two-thirds of the total decline in lake volume. The rest primarily came from an increase in lake evaporation due to warmer temperatures, which will only get worse as temperatures continue to rise. 

“As the climate is warming, evaporation off the lake increases, so the contribution from warming to the evaporation is significant,” Loikith said. “Without the warming trend, 2022 wouldn't have been record low. Even though streamflow is dominant, the increase in evaporation was necessary to reach the record low.”

The researchers said that the findings suggest that increased streamflow can lead to rapid volume recovery in the short term, but under continued warming, evaporation is expected to lead to additional long-term water loss.

In addition to ecological and economic loss, the shrinking lake also poses health risks as a source of toxic dust for the 1.2 million people in the Salt Lake City metro region.

“As the lake shrinks, it's exposing this dry lakebed that could possibly increase dust events into the metropolitan area, affecting the air quality for nearby residents,” Bigalke said.

The findings were published in the journal Geophysical Research Letters. The authors suggest further research into determining the degree to which local increasing evaporation, precipitation changes and/or human-caused diversions is affecting streamflow into the lake.

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