Colleen Hughes

Colleen Hughes
Indiana University Bloomington | IUB · Department of Psychological and Brain Sciences

Doctor of Philosophy

About

21
Publications
1,535
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216
Citations

Publications

Publications (21)
Article
Objectives Older age is associated with poorer ability to accurately infer mental states, but some mental states are more complex than others. Sarcasm is a complex mental state because the literal and intended meaning of a speaker's words are in opposition. Individuals must rely on additional cues (e.g., facial expressions, intonation) for accurate...
Article
Objectives: Aging is associated with declines in theory of mind - the ability to infer the mental states of others. We examined whether priming theory of mind mindsets actively (Study 1) and passively (Study 2) improved older adults' performance. Method: Across two studies, participants completed a novel question-and-answer theory of mind task u...
Article
The default network is widely implicated as a common neural substrate for self-generated thought, such as remembering one's past (autobiographical memory) and imagining the thoughts and feelings of others (theory of mind). Findings that the default network comprises subnetworks of regions - some commonly and some distinctly involved across processe...
Article
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The neuromodulatory subcortical nuclei within the isodendritic core (IdC) are the earliest sites of tauopathy in Alzheimer’s disease (AD). They project broadly throughout the brain’s white matter. We investigated the relationship between IdC microstructure and whole-brain white matter microstructure to better understand early neuropathological chan...
Article
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Optimal decision-making balances exploration for new information against exploitation of known rewards, a process mediated by the locus coeruleus and its norepinephrine projections. We predicted that an exploitation-bias that emerges in older adulthood would be associated with lower microstructural integrity of the locus coeruleus. Leveraging in vi...
Poster
BACKGROUND AND AIMS: A robust feature characterizing frontotemporal dementia from other dementias are early deficits in social cognition. The salience and default networks, comprising groups of brain regions studied using resting-state functional connectivity (RSFC), are linked to the processing of emotionally salient stimuli and inferring others’...
Article
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Elevated iron deposition in the brain has been observed in older adult humans and persons with Alzheimer's disease (AD), and has been associated with lower cognitive performance. We investigated the impact of iron deposition, and its topographical distribution across hippocampal subfields and segments (anterior, posterior) measured along its longit...
Poster
INTRODUCTION. The salience network (SN) is central for processing salient stimuli and plays an interactive role with neurocognitive networks relevant to goal-oriented behaviour. A robust feature characterising frontotemporal dementia (FTD) from other dementias are early deficits in social cognition and atrophy in the anterior insula (aINS). Resting...
Poster
(Awarded Best Poster at 5th Annual Healthy Brains, Healthy Lives 2023 Research Symposium). BACKGROUND AND AIM. The salience network (SN), comprising the anterior insula, dorsal anterior cingulate and other structures, is central in the processing of emotionally salient stimuli and directly influences other neurocognitive networks relevant to goal...
Article
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The affective polarization characteristic of the United States’ political climate contributes to pervasive intergroup tension. This tension polarizes basic aspects of person perception, such as face impressions. For instance, face impressions are polarized by partisanship disclosure such that people form positive and negative impressions of, respec...
Article
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Americans’ increasing levels of ideological polarization contribute to pervasive intergroup tensions based on political partisanship. Cues to partisanship may affect even the most basic aspects of perception. First impressions of faces constitute a widely-studied basic aspect of person perception relating to intergroup tensions. To understand the r...
Article
The intrinsic functional organization of the brain changes into older adulthood. Age differences are observed at multiple spatial scales, from global reductions in modularity and segregation of distributed brain systems, to network-specific patterns of dedifferentiation. Whether dedifferentiation reflects an inevitable, global shift in brain functi...
Article
Older adults (OA) evaluate faces to be more trustworthy than do younger adults (YA), yet the processes supporting these more positive evaluations are unclear. This study identified neural mechanisms spontaneously engaged during face perception that differentially relate to OA’ and YA’ later trustworthiness evaluations. We examined two mechanisms: s...
Article
Although stigma is a major barrier to treatment for those with mental health concerns, it is poorly understood when stigma is more or less influential in mental health treatment decisions. In the current work, we examined whether psychological distance—the removal of an event from direct experience—reduced the influence of internalized stigma on wi...
Article
Mentalizing, or thinking about others’ mental states, shapes social interactions. Older adults (OA) have reduced mentalizing capacities reflected by lower medial prefrontal cortex (mPFC) activation. The current study assessed if OA’ lower mPFC activation reflects less spontaneous mentalizing during person perception. Younger adults (YA) and OA view...
Article
Full-text available
Functional connectivity - the co-activation of brain regions - forms the basis of the brain's functional architecture. Often measured during resting-state (i.e., in a task-free setting), patterns of functional connectivity within and between brain networks change with age. These patterns are of interest to aging researchers because age differences...
Article
Full-text available
Prior work on aging and prejudice has identified that declining executive ability underlies older adults' (OA') increased anti-outgroup bias. The current work, however, suggests that there may also be a motivational reason. Here, we explored the possibility that for OA with relatively lower executive ability, anti-outgroup bias may serve an ironic...
Article
Full-text available
Outgroup members (e.g., individuals whose racial identity differs from perceivers’) are stigmatized in Eastern and Western cultures. However, it remains an open question how specific cultural influences affect stigmatization. In this study, we assessed whether cultural learning (i.e., social information acquired from the people in one’s environment...
Article
Theory of mind (i.e., the ability to infer others' mental states) – a fundamental social cognitive ability – declines with increasing age. Prior investigations have focused on identifying task-evoked differences in neural activation that underlie these performance declines. However, these declines could also be related to dysregulation of the basel...
Article
Two experiments investigated the effects of the number of health recommendations (e.g., quit smoking; relax for a day) contained in a health-promotion message on recommendation recall and intentions to enact the recommendations. We hypothesized that if recommendations are stored individually, a higher number of presented recommendations will increa...

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