Erin Walsh

• PhD, BSc(Psychology, Hons I), BSc (Science Communication)
• PostDoc Position at Australian National University

Background: There is a lack of empirical evidence on bedtime social media use (BSMU), sleep, and mental health. Therefore, this study aimed to investigate these relationships using longitudinal data. Method: Bangladeshi young adult social media users (n=437) aged between 18-30 years (mean 22.6 years, 49.7% female) who participated in the four-wave...

Background The literature investigating the relationship between social media use, mental health, and sleep has produced inconsistent findings. Younger people spend more time on social media than other age groups, and are more likely to be impacted by social media use. This systematic review with meta-analysis aimed to synthesise the evidence on th...

The Social Media Motives Questionnaire (SMMQ) is a short tool for assessing people’s motives for social media use (SMU) across four domains: coping, conforming, enhancing (entertainment), and social. The present study aimed to assess the psychometric properties of the SMMQ in Bangladeshi young adults, including testing for longitudinal measurement...

High blood pressure (BP) is a significant contributor to the disease burden globally and is emerging as an important cause of morbidity and mortality in the young as well as the old. The well-established impact of high BP on neurodegeneration, cognitive impairment, and dementia is widely acknowledged. However, the influence of BP across its full ra...

The health promotion literature that considers how scientific evidence can be effectively communicated tends to focus on evaluating the effectiveness of communication materials. This has resulted in a knowledge gap regarding effective knowledge translation processes. This study explores the process, reasoning and practices for developing books for...

Background Consistent evidence shows that magnesium (Mg) intake is associated with lower blood pressure (BP), and that lower BP is associated with improved cerebral health. However, recent findings indicate that the positive effect of dietary Mg intake on cerebral health is not mediated by a decrease in BP. As Mg’s anti-inflammatory action is a pla...

Several modifiable risk factors for neurodegeneration and dementia have been identified, although individuals vary in their vulnerability despite a similar risk of exposure. This difference in vulnerability could be explained at least in part by the variability in DNA repair mechanisms’ efficiency between individuals. Therefore, the aim of this stu...

Vitamin D research can vary geographically, as vitamin D status is influenced by latitude, season, dietary intake, body mass index, ethnicity, and public health initiatives. Over the last two decades, research on vitamin D has increased in Australia, where the potential for sun exposure (a major source of vitamin D) is high. We aimed to identify ke...

Background: The Patient Health Questionnaire – 9 (PHQ-9) is a short screening tool for assessing the severity of depressive symptoms. Although the psychometric properties available for the PHQ-9 Bangla, the present study aimed to investigate in more detail the psychometric properties of this scale in young adults and test its gender invariance. Da...

Background Neuroinflammation and oxidative stress (OS) are implicated in the pathophysiology of Alzheimer’s disease (AD). However, the extent to which inflammation is attributable to disease progression in the central nervous system in the pre‐ and clinical stages of dementia or emerges in the periphery and is a long‐term risk factor for the develo...

Mental ill health is a major health risk for young people. There is unmet need for mental health assessment and treatment across Australia despite significant investment in government-funded plans to cover mental health and youth-oriented services. Understandings of mental health care for young people are impeded by a lack of longitudinal research....

Purpose To examine the association between dietary magnesium (Mg) intake and brain volumes and white matter lesions (WMLs) in middle to early old age. Methods Participants (aged 40–73 years) from UK Biobank (n = 6001) were included and stratified by sex. Dietary Mg was measured using an online computerised 24 h recall questionnaire to estimate dai...

COVID-19 has disrupted the normative social order, particularly for young adults. Their deteriorating mental health over 2020 has been associated with the economic and social conditions during the COVID-19 lockdowns. We conducted 19 semi-structured interviews with young adults aged 8 and 29 most of whom lived in Victoria, Australia. The interviews...

Mental ill health is a major health risk for young people. There is unmet need for mental health assessment and treatment across Australia despite significant investment in government-funded plans to cover mental health and youth-oriented services. Understandings of mental health care for young people are impeded by a lack of longitudinal research....

Multiple sclerosis (MS) is a chronic neurological disease of the central nervous system that is currently incurable. Diet may influence the onset and progression of MS. A variety of literature reviews have been conducted in the field of diet and MS. However, conventional reviews mostly focus on specific topics rather than delivering a holistic view...

The "Black Summer" bushfires of 2019/2020 in Australia generated smoke that persisted for over three months, mainly affecting Eastern Australia. Most communication strategies focused on the fire itself, revealing a knowledge gap in effective communication of the impact of bushfire smoke on health, especially for children and those living in non-Eng...

Background The COVID-19 outbreak has spread to almost every country around the world and caused more than 3 million deaths. The pandemic has triggered enormous disruption in people's daily lives with profound impacts globally. This has also been the case in Australia, despite the country's comparative low mortality and physical morbidity due to the...

Bushfires, and resulting bushfire smoke, were major environmental, social and health crises in Australia in the summer of 2019–20. In Australia’s national capital the smoke pollution index topped global charts, and public health communications were rapidly developed that advised people to stay indoors to avoid smoke exposure. Drawing on interviews...

Background: To quantify the association between blood pressure (BP) across its full range, brain volumes and white matter lesions (WMLs) while investigating the effects of age, sex, body mass index (BMI), and antihypertensive medication. Methods: UK Biobank participants (n = 36,260) aged (40-70) years were included and stratified by sex and four...

Neuroinflammation and oxidative stress (OS) are implicated in the pathophysiology of Alzheimer’s disease (AD). However, it is unclear at what stage of the disease process inflammation first becomes manifest. The aim of this study was to investigate the associations between specific plasma markers of inflammation and OS, tau, and Amyloid-β 38, 40, a...

The 2019–20 bushfires that raged in eastern Australia were an overwhelming natural disaster leading to lives lost or upended, and communities destroyed. For almost a month, Canberra, Australia's capital city in the Australian Capital Territory (ACT), was obscured by smoke from fires which threatened the outer suburbs. While smoke itself is experien...

The importance of a safe climate for human health is recognised by healthcare professionals, who need to be equipped to deliver environmentally sustainable healthcare and promote the health of natural systems on which we depend. The inclusion of climate-health in Australian and New Zealand accredited master-level public health training and medical...

Menopause nomenclature varies in the scholarly literature making synthesis and interpretation of research findings difficult. Therefore, the present study aimed to review and discuss critical developments in menopause nomenclature; determine the level of heterogeneity amongst menopause definitions and compare them with the Stages of Reproductive Ag...

There is a growing body of evidence surrounding the implications of uncontrolled bushfires and wildfires on water. This topic has importance from an ecological perspective, and significance for human health as it has consequences for drinking water quality and supply. Against the backdrop of climate change, it is especially important to holisticall...

The objectives of this study were to investigate the long-term associations between changes in physical activity levels and hippocampal volumes over time, while considering the influence of age, sex, and APOE-ε4 genotype. We investigated the effects of change in physical activity on hippocampal volumes in 411 middle age (mean age = 47.2 years) and...

Background : Elevated blood pressure (BP) is a major health risk factor and the leading global cause of premature death. Hypertension is also a risk factor for cognitive decline and dementia. However, when elevated blood pressure starts impacting cerebral health is less clear. We addressed this gap by estimating how a validated measure of brain hea...

Objective: To quantify the association between blood pressure (BP) across its full range and brain volumes and white matter lesions (WMLs) while investigating the effects of age, sex, body mass index (BMI), antihypertensive medication, and other risk factors. Methods: UK Biobank participants ( N =36,260) aged 40 to 70 years were included and strati...

Visuals are often used to enhance learning of scientific information. The recent emergence and popularity of comic-style instruction books for adults, such as the ‘manga guide to …’, shows the possibility of comic style visualisations for the communication of science with adults. This study investigates whether the addition and style of visual acco...

Background: The World Health Organization deemed climate change and air pollution as the top threat to global health in 2019. The importance of climate for health is recognised by healthcare professionals, who need to be equipped to deliver environmentally sustainable healthcare and promote planetary health. There is some evidence that climate chan...

Ageing is a global concern with major social, health, and economic implications. While individual countries seek to develop responses to immediate, pressing needs, international attention and collaboration is required to most effectively address the multifaceted challenges and opportunities an ageing global population presents in the longer term. T...

Background: To summarise and quantify the evidence on the association between Blood pressure (BP), white matter lesions (WMLs), and brain volumes. Method: Electronic databases PubMed, Scopus, and Clarivate were searched in February 2020 using an established methodology and pre-determined search terms. Studies were eligible for inclusion if they...

Type 2 diabetes mellitus (T2D) prevalence continues to increase, and age of incidence continues to decrease. More information is needed to target interventions to the ages where they can be most effective. The objective of this study was to explore the degree to which the association between diet and T2D incidence changes through adulthood. Partici...

Understanding heterogeneity in brain aging trajectories is important to estimate the extent to which aging outcomes can be optimized. Although brain changes in late life are well-characterized, brain changes in middle age are not well understood. In this study, we investigated hippocampal change in a generally healthy community-living population of...

The availability of healthcare data has exponentially grown, both in quantity and complexity. The speed of this evolution has generated new challenges for translating complex data into effective evidence-informed policy. Visual analytics offers new capacity to analyze healthcare systems and support better decision-making. We conducted a systematic...

Background: Health experts including planners and policy-makers face complex decisions in diverse and constantly changing healthcare systems. Visual analytics may play a critical role in supporting analysis of complex healthcare data and decision-making. The purpose of this study was to examine the real-world experience that experts in mental heal...

Objective This study aimed to investigate cross‐sectional and longitudinal associations between fat mass (i.e., body mass index [BMI], waist circumference [WC], and waist to hip ratio [WTHR]) and hippocampal volumes. Methods UK Biobank participants (N = 20,395) aged 40 to 70 years (mean follow‐up = 7.66 years), were included and categorized into o...

Physical activity has received substantial research attention due to its beneficial impact on cognition in ageing, particularly via the action of brain-derived neurotrophic factor (BDNF). It is well established that physical activity can elevate circulating levels of BDNF, and that BDNF has neurotrophic, neuroprotective and cognitively beneficial p...

It is a common, if controversial, practice to recruit undergraduate psychology students as research participants. There is substantial research concerning putative educational benefits for students, but as students increasingly have freedom to choose between studies to meet participation requirements, factors underlying student choice of participat...

A key question for the design of clinical trials for Alzheimer's disease (AD) is whether the timing of conversion from mild cognitive impairment (MCI) to AD can be predicted. This is also an important question for the clinical management of MCI. This study aims to address this question by exploring the contribution of baseline brain volume and annu...

Objectives: The aim of the study was to determine lipid profile differences between premenopausal and postmenopausal women. Methods: The present review used a meta-analytic approach. Sixty-six studies were included, which provided a total sample of 114,655 women consisting of 68,394 that were premenopausal and 46,261 that were postmenopausal. R...

Shape analysis provides a unique insight into biological processes. This paper evaluates the properties, performance, and utility of elliptical Fourier (eFourier) analysis to operationalise global shape, focussing on the human corpus callosum. 8000 simulated corpus callosum contours were generated, systematically varying in terms of global shape (m...

It is widely recognised that type 2 diabetes (T2D) represents a major disease burden but it is only recently that its role in neurodegeneration has attracted more attention. This research has shown that T2D is associated with impaired cerebral health, cognitive decline and dementia. However, the impact on the brain of progressive metabolic changes...

Background Inflammation and oxidative stress (OS) have been clearly linked to neurodegeneration. However, studies investigating the associations between peripheral markers of inflammation and cognitive decline have produced mixed results. This is possibly due to the fact that markers are typically tested individually despite the fact that biologica...

Background Local shape complexity can be biologically meaningful as a marker of disease, trauma, or change in brain structure over time. Fractal dimensionality (FD) is currently the dominant measure of local shape complexity used in neuroimaging but its limitations are not well understood. New method Elliptical Fourier harmonic power requirement (...

Objective: Data: Fat mass has been shown to increase in aging women; however, the extent to which menopausal status mediates these changes remains unclear. The purpose of this review was to determine (1) how fat mass differs in quantity and distribution between premenopausal and postmenopausal women, (2) whether and how age and/or menopausal statu...

Strong evidence is available suggesting that effective reduction of exposure to demonstrated modifiable risk factors in mid-life or before could significantly decrease the incidence of Alzheimer’s disease (AD) and delay its onset. A key ingredient to achieving this goal is the reliable identification of individuals at risk well before they develop...

Background Chronic obstructive pulmonary disease (COPD) is a major disease burden which accounts for 5% of all deaths globally, with most of those (>90%) occurring in lower to middle income countries (LMIC). It is also emerging as an important modifiable dementia risk factor. Objective To address the knowledge gap surrounding the nature of the ass...

OBJECTIVES: This study aimed to investigate the predictive value of cognitive/functional measures in combination with hippocampal volume on the probability of conversion from mild cognitive impairment (MCI) to Alzheimer's disease (AD). METHODS: The Rey Auditory Verbal Learning Test for immediate memory, Mini Mental State Examination, a functional...

Manual review of the extensive literature covering nutrition-based lifestyle interventions to promote healthy cognitive ageing has proved educational, however, data-driven techniques can better account for the large size of the literature (tens of thousands of potentially relevant publications to date) and interdisciplinary nature, where relevant p...

Manual review of the extensive literature covering nutrition-based lifestyle interventions to promote healthy cognitive ageing has proved educative, however, data-driven techniques can better account for the large size of the literature (tens of thousands of potentially relevant publications to date) and interdisciplinary nature of where relevant p...

Background: There is a growing research focus on temporal cognition, due to its importance in memory and planning, and links with psychological wellbeing. Researchers are increasingly using diary studies, experience sampling and social media data to study temporal thought. However, it remains unclear whether such reports can be accurately interpret...

Background BMI, hyperglycaemia and Type 2 Diabetes (T2D), and their interactive effects are associated with brain volume atrophy in ageing. It remains to be established if these risk factors are particularly concerning in individuals with high or low brain volumes. Methods Demographics, venous blood and MRI data were collected for 494 healthy comm...

Previous studies have demonstrated associations between higher blood glucose and brain atrophy and functional deficits, however, little is known about the association between blood glucose, striatal volume and striatal function despite sensori-motor deficits being reported in diabetes. This study investigated the relationship between blood glucose...

The current challenge in clinical practice is to identify those with mild cognitive impairment (MCI), who are at greater risk of Alzheimer's disease (AD) conversion in the near future. The aim of this study was to assess a clinically practical new hippocampal index-hippocampal volume normalized by cerebellar volume (hippocampus to cerebellum volume...

Background and aims: The aim of this study was to examine, in a community setting, whether trajectory of weight change over twelve years is associated with glucose and insulin metabolism at twelve years. Methods and results: Participants were 532 community-living middle-aged and elderly adults from the Personality and Total Health (PATH) Through...

Hormone replacement therapy, insulin, and hippocampal volumes in postmenopausal women a longitudinal study Poster Australian Society for Medical Research New Investigators Forum (Canberra, Australia)

High blood glucose and type 2 diabetes are associated with a range of adverse health and cognitive outcomes. One factor that contributes to high blood glucose and type 2 diabetes is dietary intake. This study investigated the relationship between dietary patterns, fasting blood glucose and diabetes status in a sample of 209 participants aged 60–65....

The Ruminative Thought Styles Questionnaire (RTS) conceptualizes rumination as repetitive, recurrent, intrusive, and uncontrollable thinking. This article outlines the development and validation of a Chinese language version of the RTS, the RTS-CH. Following independent translation, back translation, and final translation checking, the factor struc...

Background: While acceleration in age-related cerebral atrophy has been well documented in Alzheimer's disease, the cerebellar contributions to this effect have not been thoroughly investigated. Objective: This study investigated cerebellar volume and atrophy rate using magnetic resonance imaging in individuals with normal cognition (CN), mild c...

Corpus callosum shape, cognition and ageing - Poster

The ubiquity of mobile telephones worldwide offers a unique opportunity for bidirectional communication between researchers and participants. There are two ways mobile phones could be used to collect self-report data: via Short Message Service (SMS) or app (mobile telephone software applications). This study examined the comparative data quality of...

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Mental time travel is the ability to mentally relive events in one's own past (episodic recall) and pre-live potential personal future events (episodic foresight). Recent research has used experience sampling to reveal when and how often we think about the past and future in everyday life; however, it remains unclear how much of thought is episodic...

Short Message Service (SMS) is one of the most widely used data services worldwide. This paper examines the assumption that the 160-character limit would force brief and thus comparatively uninformative responses in psychological research compared to other data collection modes. In laboratory classes, 463 psychology undergraduate students were rand...

When using Short Message Service (SMS) as a tool for data collection in psychological research, participants can be contacted at any time. This study examined how sampling frequency and time of day of contact impacted on response rates, response completeness, and response delay in repeated measures data collected via SMS. Eighty-five undergraduate...

Due to their ubiquity, mobile telephones may herald a great opportunity for ecological momentary assessment data collection. To access samples which do not own a mobile, or do not own a mobile that supports the preferred mode of response (i.e. apps), researchers may wish to provide participants with an appropriate mobile telephone for the purposes...

Abstract Despite being a common aspect of psychological research, the impact of delay between recruitment and active participation on dropout rates has received little research attention. This is likely due to the intuitive sense that longer delays will increase the drop-out rate. Pre-inclusion attrition diminishes sample sizes and may threaten dat...

As mobile handsets become more sophisticated, they are capable of supporting increasingly sophisticated applications and software which can be used for mobile telephone based interventions, treatment, research and telecare. Though it is generally accepted that older individuals will own less sophisticated handsets, this brief study assesses age-ass...

Abstract Particularly suited to repeated measures in naturalistic settings, Short Message Service (SMS) is garnering increasing attention as a viable method of data collection. The current study explored issues of practical importance for the development of this methodology, including factors impacting on attrition and compliance, and participant p...