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Description
With the rise of Posttraumatic Stress Disorder (PTSD) among adults in the United States, understanding the processes of trauma, trauma related disorders, and the long-term impact of living with them is an area of continued focus for researchers. This is especially a concern in the case of current and former military service members (veterans), whose work activities and deployment cycles place them at an increased risk of exposure to trauma-inducing experiences but who have a low rate of self-referral to healthcare professionals. There is thus an urgent need for developing procedures for early diagnosis and treatment. The present study examines how the tools and findings of the field of linguistics may contribute to the field of trauma research. Previous research has shown that cognition and language production are closely linked. This study focuses on the role of prosody in PTSD and pilots a procedure for the data collection and analysis. Data consist of monologic talk from a sample of student-veterans and analyzed with speech software (Praat) for pauses greater than 250 milliseconds per 100 words. The pause frequency was compared to a PCL-5 score, an assessment used to check for PTSD symptoms and evaluate need for further assessment and possible diagnosis of PTSD. This pilot study found the methods successfully elicited data that could be used to measure and test the research questions. Although the findings of the study were inconclusive due to limitations of the participant pool, it found that the research model proved effect as a model for future linguistic research on trauma.
ContributorsSouthee, Richard Aaron (Author) / Prior, Matthew T. (Thesis advisor) / Pruitt, Kathryn (Committee member) / Pereira, Jennifer (Committee member) / Arizona State University (Publisher)
Created2020
Description
Mood disorders are prevalent within the college student population, increasing the potential for poor academic performance among those students. Intermittent fasting, particularly time-restricted feeding (TRF) regimens, have shown promising results associated with improvements in health outcomes related to weight loss, cardiovascular health, glucose and insulin regulation, and breast cancer; however, very limited research exits for the impact on mood states. The objective of this eight-week randomized, controlled trial was to examine the effects of a daily fasting regimen of 18 hours (six hour feeding window), compared to a daily fasting regimen of eight hours (16 hour feeding window), on the mood state of healthy college students attending Arizona State University or University of Arizona. Twenty nine students were recruited and randomized into the TRF group (n = 16) following a 16-hour fast or the control (CON) group (n = 13) following an eight-hour fast. Participants in each group were instructed to consume their first meal within an hour of waking, which would then begin their assigned feeding window. Participants were also allowed one ‘cheat day’ per week in which they were not required to follow their assigned fasting protocol, otherwise no additional dietary instructions were given; participants were permitted to consume food and beverages ad libitum throughout their feeding window. Mood state was assessed at baseline, week four, and week eight using the Profile of Mood States questionnaire and the GAD-7, specific to generalized anxiety. Of the initial 29 participants recruited, 18 completed the trial (TRF group n = 8; CON group n = 10). Data were reported through week four only, due to inconsistencies with week eight data as a result of the COVID-19 pandemic. The mood state measures did not show any statistically significant changes after four weeks. The results of this study suggest that a TRF regimen of 18 hours does not significantly impact overall or individual mood states among college students.
ContributorsChondropoulos, Kelly Nicole (Author) / Johnston, Carol (Thesis advisor) / Shepard, Tina (Committee member) / Alexon, Christy (Committee member) / Arizona State University (Publisher)
Created2021
Description
Relations between two aspects of the parent-child relationship, parent warmth and modeling of emotion expression, and youth internalizing and externalizing problems and maladaptive grief were examined in a longitudinal sample of parentally bereaved youth. Youth expressive suppression was tested as a mediator of these relations and youth age was examined as a moderator. Parentally bereaved youth (N=244) aged 8 to 16 and their parents were assessed at three timepoints. Across 14 months, parent modeling of maladaptive emotion expression was significantly associated with increased parent report of both internalizing and externalizing problems, and youth report of parental warmth was significantly associated with decreased youth report of externalizing problems. There was no support for youth expressive suppression mediating these relations and the pattern of relations did not differ significantly by youth age. Implications for intervention programs targeting parents and youth are discussed.
ContributorsUhlman, Rana Natasha Goble (Author) / Wolchik, Sharlene A (Thesis advisor) / Anderson, Samantha F (Committee member) / Meier, Madeline H (Committee member) / Arizona State University (Publisher)
Created2021
Description
Whether through scaring incarcerated people straight or encouraging rehabilitation through treatment, most people hope that, one way or another, incarceration will alter an individual’s path towards a better life. Current forms of incarceration are not achieving this goal and instead inflict undue amounts of pain (Crewe, 2011; Sykes 1958). In times of deprivation and isolation, some people have found ways to not only persevere, but to thrive. Though these individuals are not commonly the focus of criminal justice literature, there is much value in shifting attention to people thriving in prison including the opportunity to gain knowledge on the multi-faceted nature of well-being broadly and the rehabilitation of incarcerated people more specifically. The current study uses structured interview data from 386 men serving time in a medium-security prison unit to explore the correlates of life satisfaction among people in prison. To identify contributing factors to well-being during incarceration, logistic and multinomial regressions analyze variation in the life satisfaction scores of these incarcerated men. The results from these analyses suggest that perceptions of life meaning, generativity, flourishing, and age are all positively associated with thriving in prison and frequency of experiences with incarceration are not related, positively or negatively, to life satisfaction. This study provides some support to current well-being literature and also introduces complexities to the existing knowledge regarding the relationships between demographics such as race or relationship status, and well-being.
ContributorsSutton, Madison Murphy (Author) / Wright, Kevin A. (Thesis advisor) / Telep, Cody (Committee member) / Young, Jacob T.N. (Committee member) / Arizona State University (Publisher)
Created2021
Description
Sexual minorities use social media platforms at higher rates than heterosexual individuals, often to find and connect with other sexual minorities and the broader online LGBTQ+ community. These online connections may help normalize feelings and experiences as a sexual minority in a heterosexual-normed society by increasing exposure to more meaningful reference groups and helping to mitigate the negative impact of heterosexist norms. There has been relatively little research investigating online social connectedness (OSC) among sexual minority adults, the relation between OSC and positive psychological outcomes, and the role of OSC in lessening the impact of heterosexist norms. The goal of the present thesis was to examine the relation between OSC and positive psychological outcomes, and whether such a relation is mediated by compulsory heterosexuality (CH; i.e., heterosexist norms) and internalized heterosexism (IH; i.e., internalizing and accepting heterosexist norms). A sample of 298 sexual minority adults in the U.S. completed an online survey that included measures of OSC, CH, IH, and positive psychological outcomes including resilience, well-being, self-acceptance, and self-esteem. The hypothesized model, with CH and IH as serial mediators of the relation between OSC and positive psychological outcomes, along with a series of alternative models, were tested using structural equation modeling. Support was found for the hypothesized model, such that greater OSC predicted lower CH, which then predicted lower IH, which in turn predicted greater positive psychological outcomes. While several alternative models had adequate fit, the hypothesized model was best supported statistically and by previous literature. These findings provide insights into the psychological benefits of social media connections for sexual minorities and the potential for OSC to lessen the impact of heterosexist norms. This study also adds to the existing literature regarding OSC and sexual minority adults, expanding the literature from primarily focusing on sexual minority youth. Future studies should be more socio-demographically diverse and longitudinal in nature in order to help better understand the directionality of the relationship between CH and IH. The present findings may also inform the development of interventions aimed at decreasing CH and IH, which future studies should investigate more fully.
ContributorsBaumel, Katie (Author) / Hall, Deborah (Thesis advisor) / Mickelson, Kristin (Committee member) / Salerno, Jessica (Committee member) / Arizona State University (Publisher)
Created2021
Description
The current study explores the extent to which different processing strategies affect comprehension accuracy and integration of information across multiple texts. Reading comprehension of single texts is a difficult task, in which the challenges are compounded by the need to integrate information across texts. Processing strategies, such as self-explanation and source-evaluation, help reduce the challenges that readers face when attempting to comprehend texts. Self-explanation has been a successful strategy for coherence-building processes in single text comprehension, but the benefits for supporting inter-textual comprehension have not yet been explored. Source-evaluation supports identification of different sources, which helps resolve inconsistencies between texts; yet it remains unclear whether sourcing alone supports comprehension within as well as between texts. Think-aloud is a strategy intended to encourage further processing of the text without providing any explicit comprehension strategy. The differences between these two strategies prompts questions regarding the adequacy of either strategy for supporting inferencing and integration within and across texts. In this study, participants (n=80) were randomly assigned to one of three strategy conditions: self-explanation, source-evaluation, or think-aloud. Students read four texts after which they completed three types of open-ended comprehension questions (i.e., textbase, intra-textual inference, and inter-textual inference), a source memory task, and individual difference measures. Prior knowledge and reading skill were strongly correlated (r = .65) and showed moderate correlations (r = .31 to .60) with participants’ comprehension accuracy, total number of integrations within their responses, and their memory for sources. Participants were more likely to respond accurately and demonstrate integrations across texts for the text-based questions in comparison to the more challenging inference questions. There was a marginal effect of condition on comprehension question accuracy, wherein participants who self-explained responded more accurately than those who engaged in the think-aloud task. In addition, those in the self-explanation or source-evaluation conditions recalled more sources than those in the think-aloud condition. There were no significant differences in performance between the self-explanation and the source-evaluation conditions. Overall, the results of this study indicate that encouraging students to self-explain and/or evaluate sources while they read multiple documents enhances comprehension and memory for sources.
ContributorsPerret, Cecile Aline (Author) / McNamara, Danielle S (Thesis advisor) / Brewer, Gene (Committee member) / Glenberg, Arthur (Committee member) / Arizona State University (Publisher)
Created2021
Description
Background: Studies show that rural schools may be less supportive of student fruit/vegetable (FV) consumption, but few studies have investigated the relationship between school locale and FVs. The aim of this research is to analyze the relationship between school locale (rural vs. urban) and students’ FV selection, consumption, and waste in elementary, middle, and high schools. Methods: A cross-sectional analysis of 37 Arizona schools evaluated differences in the selection, consumption, and waste of fresh FVs from students (n=2525; 45.7% female; 41% non-white; mean age=11.6±3.3; 23.5% rural) using objective plate waste measures. Zero-inflated negative binomial regressions examined differences in FV grams selected, consumed, and wasted by urban vs. rural locale, adjusted for sociodemographics and school.
Results: The percent of students who selected, consumed, and wasted zero grams of FVs were 14%, 21%, 20%, respectively. Among students with some (non-zero amounts), the average selected, consumed, and wasted FVs were 115.0±81.4g, 51.7.5±65.1g, 65.2±66.7g, respectively. Rural students (versus urban) had lower odds of selecting (OR=0.75), consuming (OR=0.78), and wasting (OR=0.71) any FVs, after adjusting for covariates. However, among students with some FVs on their plates, rural students selected (IRR=1.40), consumed (IRR=1.18) and wasted (IRR=1.62) more grams of FVs.
Conclusions: Rural students had reduced odds of selecting and consuming any FVs, but with lower odds of waste, perhaps due to reduced selection. Once some FVs were on the tray, likelihood of consumption and waste by rural students were greater. Results support interventions targeting rural students’ FV intake to reduce waste.
ContributorsJepson, Molly Eilish (Author) / Bruening, Meg (Thesis advisor) / Adams, Marc (Committee member) / Grgich, Traci (Committee member) / Arizona State University (Publisher)
Created2021
Associations Between Rapid Infant Weight Gain, Infant Feeding Practice and the Infant Gut Microbiome
Description
Background: Rapid infant weight gain (RWG) by six months of age has been identified as one of the earliest indicators of childhood obesity. Previous research suggests that exclusive breastfeeding over formula feeding may serve a protective effect from RWG. In addition, the makeup of the infant gut microbiome may influence RWG as differences in feeding practices have been shown to alter the bacterial makeup of the gut, potentially impacting energy metabolism. However, little research has been conducted investigating the potential relationships between RWG, infant feeding practices, and the infant gut microbiome.Methods: This study was a pilot study, which included 31 mother-infant dyads who were primarily recruited from Women, Infant, and Children’s Supplemental Nutrition Program (WIC) clinics and by word of mouth in the Southwestern United States. Participants were followed over six months, with study staff conducting home study visits four times (pregnancy, two days postpartum, three weeks and six months). Mothers who participated in this study were majority White (n=40.6%), non-Hispanic or Latino (67.7%), and obtained a graduate degree (n=22.6%). Participants were included in this analysis (n=22) if they provided at least two infant fecal samples, and the study staff were able to collect infant anthropometric data at the three-week and six-month study visits. Microbial DNA from fecal samples was sequenced using the Illumina MiSeq instrument after polymerase chain reaction (PCR) amplification was performed on the V4 region of the 16S rRNA gene sequence. Statistical analysis was performed using the QIIME2 longitudinal plug-in.
Results: Results of this study suggested a significant difference in weighted UniFrac between infants who were exclusively breastfed and formula-fed from birth to three weeks of age. Additionally, an exploratory statistical method identified family Prevotellaceae as a potentially volatile microbe; however, this model failed to reach significance for either RWG or mode of feeding. Overall, no additional alpha or beta diversity metrics or differential abundance of microbes by either RWG or feeding practice group was found in this study.
Conclusion: Future research is warranted to further explore potential connections between RWG, infant feeding practices, and the infant gut microbiome in a longitudinal study with a larger sample size.
ContributorsToffoli, Samantha (Author) / Whisner, Corrie (Thesis advisor) / Bruening, Meg (Committee member) / Sears, Dorothy (Committee member) / Arizona State University (Publisher)
Created2021
Description
Background: Children in the United States have low diet quality scores and consume less than the recommended amounts of fruits, vegetables, whole grains, and dairy. The National School Lunch Program serves nearly 30 million children daily, and has the potential to improve the diet quality of children. However, there are high levels of food waste, particularly of fruits and vegetables. Purpose: The purpose of this study is to determine which menu items students are throwing away untouched most frequently. A secondary purpose of this study is to determine which menu items students are fully consuming most frequently.
Methods: Student participants (n=2,881) in Arizona elementary, middle, and high schools who participated in school lunch were randomly selected to participate in the study. Student lunch trays were photographed before and after the student ate. Visual estimation was used to determine if menu items were untouched or fully consumed. Menu item names were standardized and categorized into menu categories. The frequency menu items were untouched or fully consumed were summarized in percentages by menu category, and stratified by school level.
Results: Findings show that menu items within each menu category are untouched and fully consumed with different frequencies. Cold vegetable items were untouched with the greatest frequency, with 39% of all servings untouched. Some menu items were both untouched and fully consumed with high frequency.
Conclusion: Food service managers can use these results to plan menus with food items that are more popular among their students to help increase consumption and decrease waste. Future research should explore the relationship between packaging and preparation with student consumption and waste. Researchers should also examine aspects of the high school food environment that may lead to increased student consumption.
ContributorsLiddicoat, Carina Marie (Author) / Bruening, Meg (Thesis advisor) / Adams, Marc A (Committee member) / Grgich, Traci (Committee member) / Arizona State University (Publisher)
Created2022
Description
The purpose of this research was to investigate the effect of the type of crime (namely, its perceived immorality) a juvenile is suspected of on how juvenile suspects are perceived (in terms of moral character, immaturity, and suggestibility) and, in turn, interrogated. I expected act-person dissociation to influence that effect. To that end, perceptions of crime (i.e., immorality, seriousness) were also investigated. The study was first conducted with law enforcement officers (n = 55), then replicated with laypeople (n = 171). Participants were randomly assigned to one of three crime conditions: robbery, sexual assault, and murder. In each condition, participants read a probable cause statement involving a 15-year-old suspect. There were several key findings: (1) Murder was the most serious crime, whereas robbery and sexual assault were more immoral. (2) Act-person dissociation did not occur. (3) Participants were more likely to endorse the use of psychologically coercive tactics on the juvenile suspected of sexual assault than the juvenile suspected of murder. (4) The more favorably participants perceived a juvenile’s moral character, the less likely they were to endorse the use of psychologically coercive interrogation tactics. (4) Participants who more strongly agreed that juveniles are more immature and suggestible than adults were less likely to endorse the use of psychologically coercive tactics, more likely to endorse the use of tactics that encourage compliance with interrogators, and more likely to adhere to the PEACE model of juvenile interrogations. The implications and limitations of these findings are discussed, along with potential directions for future research.
ContributorsFaison, Lakia (Author) / Mickelson, Kristin (Thesis advisor) / Smalarz, Laura (Committee member) / Salerno, Jessica (Committee member) / Arizona State University (Publisher)
Created2021