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PSYC2026SUAREZ19048 BIOL

Diet-induced peripheral tissue changes associated with risk factors for Alzheimer’s disease

Type: Graduate
Author(s): Jessica Suarez Psychology Siri Bejjanki Psychology Gary Boehm Psychology Zayden Sanchez Biology
Advisor(s): Michael Chumley Biology

Growing evidence suggests that diet plays an important role in the development and progression of neurodegenerative diseases such as Alzheimer’s disease. Dietary patterns can influence metabolic health, inflammation, and gut physiology, which in turn may affect brain function. Alterations in lipid metabolism, adipose tissue structure, and intestinal integrity have been linked to systemic physiological changes associated with neurodegenerative disease risk.
The present study examined how different dietary patterns influence peripheral tissues involved in metabolic and gastrointestinal regulation. C57BL/6J mouse were exposed to three diets representing distinct nutritional profiles: a Mediterranean diet, a Typical American diet, and a Standard laboratory diet used as a control condition. To evaluate potential systemic effects of these diets, the study focused on a set of peripheral tissue markers associated with metabolic and intestinal function. Following dietary exposure, morphological changes were evaluated in selected tissues using histological analysis.
Diet exposure produced notable differences across the tissues examined depending on the diet. In the liver, animals exposed to the high-fat Typical American diet showed increased hepatic lipid droplet accumulation, indicating greater fat deposition within hepatocytes. Such changes may reflect alterations in lipid metabolism and metabolic regulation. In white adipose tissue, adipocytes displayed increased cell size, suggesting adipocyte hypertrophy commonly associated with metabolic stress.
Alterations were also observed in the gastrointestinal system. In the small intestine, mice showed reduced villi length and a lower number of goblet cells. These structures are essential for nutrient absorption and mucosal protection, and their reduction may indicate changes in intestinal barrier function. Because intestinal health is closely linked to brain function through the gut–brain axis, these alterations may have broader implications for neurological health.
Together, these findings suggest that dietary patterns can induce structural changes in peripheral tissues involved in metabolism and intestinal physiology. Although these markers represent only a subset of the many factors associated with neurodegenerative disease, they provide measurable indicators of systemic changes that may contribute to processes related to Alzheimer’s disease risk.

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PSYC2026SULLIVAN3025 PSYC

The Impact of Helicopter Parenting and Interparental Conflict on College Students' Romantic Relationships: The Mediating Role of Attachment-related Behaviors

Type: Graduate
Author(s): Whitney Sullivan Psychology Ava Burton Psychology Jasmine Durrant Psychology
Advisor(s): Naomi Ekas Psychology

The term helicopter parenting (i.e., parents’ over-involvement in the lives of their child) has been used to describe parents who exercise increased involvement and control over their child and is mostly regarded as developmentally inappropriate for emerging adults (Kouros et al., 2017; Padilla-Walker & Nelson, 2012). The association between helicopter parenting and poorer relationship satisfaction in college students has recently been observed (Jiao et al., 2024). Interparental conflict has been associated with poor relationship quality in emerging adults (Parade et al., 2012; Singh & Thomas, 2023). In addition, studies have indicated that interparental conflict and helicopter parenting predict negative attachment characteristics in children (Laurent et al., 2008; Miller et al., 2024). The goal of the current study was to examine the associations between helicopter parenting, interparental conflict, and parenting warmth on college students’ relationship satisfaction. An additional goal of the current study was to examine the extent to which negative attachment-related behaviors (i.e., anxiety and avoidance) explain these associations.

Participants included 413 undergraduate students in a romantic relationship who were enrolled in psychology courses across two private universities in the Dallas-Fort Worth area. Students completed a series of questionnaires through an online survey platform in exchange for course credit. Measures used for the current study included the Consolidated Helicopter Parenting Scale (CHPS; Schiffrin et al., 2019), the Conflict Properties subscale of the Children's Perception of the Interparental Conflict Scale (CPIC; Grych et al., 1992), the Parental Bonding Instrument (PBI; Parker et al., 1979), the Experiences in Close Relationships (ECR; Miller et al., 2024), and the Couples Satisfaction index (CSI; Funk & Rogge, 2007).

A structural regression model was conducted using structural equation modeling (SEM) in MPlus (Muthén & Muthén, 2017) to examine the associations between relationship satisfaction and parenting behaviors as well as interparental conflict mediated by level of attachment-related anxiety and avoidance. Significant negative associations were observed between relationship satisfaction and conflict properties (b = -.09 (SE = .05), p = .050), and level of attachment-related anxiety (b = -.19 (SE = .05), p ≤ .001) and avoidance (b = -.49 (SE = .04), p ≤ .001). Direct associations between relationship satisfaction and helicopter parenting as well as parental warmth were non-significant (ps ≥ .206). Significant positive associations were observed between attachment-related anxiety and helicopter parenting (b = .33 (SE = .05), p ≤ .001) and conflict properties (b = .17 (SE = .05), p = .001). Helicopter parenting was positively associated with attachment-related avoidance (b = .19 (SE = .05), p ≤ .001). All other effects were non-significant, ps ≥ .119.

Findings of the current study indicate that helicopter parenting behaviors increase negative attachment-related behaviors (i.e., anxiety and avoidance) in college students, which, in turn, decreases their relationship satisfaction with their current romantic partner. Interparental conflict negatively impacts college students’ relationship satisfaction. Parental warmth does not impact college students’ attachment-related behaviors or their relationship satisfaction. A strength of the current study is a large sample size well-powered for conducted analyses. Limitations include use of self-report measures and a non-representative sample as most participants were White females. Future research should examine these associations over time as well as include the use of observational measures. Clinicians working with college students with helicopter parenting and interparental conflict experiences should implement interventions designed to strengthen positive attachment-related behaviors.

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PSYC2026SWARTZ51402 PSYC

The Link Between Natural Mentoring and Resiliency in the Face of Adverse Experiences and Insecure Attachment

Type: Undergraduate
Author(s): Jessie Swartz Psychology Lillyan Shelley Psychology
Advisor(s): Danica Knight Psychology

Resilience is the ability to cope with and overcome difficulties. Childhood traumatic events can undermine resilience by disrupting emotion regulation, coping skills, social connectedness, and self-esteem, thereby reducing an individual's ability to cope effectively. A commonly used metric for assessing these events is Adverse Childhood Experiences (ACEs), which examines exposure to abuse, neglect, and household dysfunction. One way to increase resilience is through a secure attachment to a caregiver. However, if an individual lacks a secure attachment to their caregiver, supportive relationships, such as natural mentors (NM; kin, non-kin, helping professionals), can also foster resilience. The present study examines whether having a NM is associated with higher resilience, while accounting for adverse experiences and insecure attachment to primary caregivers. Approximately 300 TCU students will be recruited to complete an online survey assessing ACEs, resilience, attachment to their caregiver, and any prior relationship with a NM. Descriptive analyses, one-way ANOVA, two-way ANOVA, and stepwise multiple regression will be conducted to examine associations. Descriptive analyses will examine the prevalence of all variables. Individuals with different types of NM mentors are expected to report different levels of resilience. Additionally, individuals with a NM are expected to demonstrate greater resilience when accounting for ACEs. Finally, the presence of NMs is expected to be associated with greater resilience compared to individuals without a mentor, even after controlling for insecure attachment. Data collection will begin in March 2026 and continue throughout the month, with results and implications being presented at the conference.

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PSYC2026TAWADROUS37180 PSYC

Birth control, cycle phase, and inflammatory response to an immunological stimulus

Type: Undergraduate
Author(s): Emma Tawadrous Psychology Alexandra Hock Psychology
Advisor(s): Sarah Hill Psychology

Cytokines are a protein involved in the body’s inflammatory response to pathogen threats (Danzter, 2001), and there is evidence that long-term oral contraceptive use can increase generalized inflammation (Mongiovi et al., 2025). Sickness symptoms are related to higher cytokine levels (Dantzer & Kelley, 2007), and further research found that participants who experienced more sick effects (injection-site soreness, fatigue, muscle aches, etc.) post-flu shot showed higher cytokine levels than those with less intense sick effects (Christian et al., 2015). We wanted to know if there is a difference in post-flu shot cytokines levels and sick symptoms between naturally cycling women vs. women on hormonal birth control (HBC)/ We also wanted to know if there is a relationship between phase of menstrual cycle and levels of inflammation after a flu shot. To answer these questions, we recruited 47 women from the TCU flu-clinic. The morning after their flu shot, participants gave a blood-spot samples (stored on Whatman 903 protein saver cards), completed a survey on their HBC use, menstrual cycle phase, GRIT, mood and feelings, and sick symptoms. The data are currently undergoing multi-variate analysis, where birth control use (naturally cycling vs. HBC use) and menstrual cycle phase are the predictor variables, and cytokine levels, sick symptoms, GRIT, and mood and feelings are the dependent variables. Blood spot samples will be analyzed in May 2026 using Mesoscale Discovery V-Plex assay kits. We expect to find a relationship between HBC use and cytokine levels, and sick symptoms and cytokine levels. We also expect to find a relationship between HBC use and GRIT, mood and feelings, and sick symptoms. We do not have any expected outcomes for the relationship between menstrual cycle phase, cytokines levels, and sick symptoms, as this research is exploratory.

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PSYC2026TENTZOHUA29499 PSYC

Meaning in Life and Time Perception: The Moderating Effects of Obsessive Compulsive Tendencies

Type: Undergraduate
Author(s): Roselyn Tentzohua Psychology
Advisor(s): Cathy Cox Psychology Bao Han Tran Psychology

People with obsessive-compulsive disorder (OCD) tendencies experience intrusive, uncontrollable thoughts and images that elevate anxiety. These tendencies could potentially influence time perception, which is the subjective experience of time passage. Time scarcity is the feeling that you don’t have enough time to complete tasks. In contrast, time affluence is the feeling that you have more than adequate time to complete tasks. Research has shown that time affluence is positively associated with meaning in life, while time scarcity has a negative association with meaning of life. This study examines how OCD tendencies influence the relationship between time perception and meaning in life. Participants (N = 360) were recruited from Prolific and were randomly assigned into 1 of 3 conditions (i.e., time scarcity, time affluence, vs. control). Following the completion of the Yale-Brown Obsessive Compulsive Scale (Y-BOCS) to measure OCD traits, participants underwent a manipulation by reading a vignette that primed them about the tightness or openness of time in a work environment. After the manipulation, participants completed the Meaning in Life Questionnaire. This research will guide future work on how time-scarce or time-affluent environments affect OCD symptomology.

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