Accuracy of Three Assessments of Sleep Timing, Duration and Efficiency Compared to a Single-Channel EEG Device (open access)

Accuracy of Three Assessments of Sleep Timing, Duration and Efficiency Compared to a Single-Channel EEG Device

Poor sleep measured across many dimensions has been linked to adverse physical and mental health outcomes including cardiovascular disease, diabetes, cancer, increased mortality, depression, and anxiety. Current research typically relies upon brief, subjective, inadequately validated methods to assess limited dimensions of sleep, resulting in inaccurate measurements and possibly faulty conclusions. Specifically, research validating objective (e.g., actigraphy) and subjective (e.g., sleep diaries, retrospective surveys) measurement methods against the gold standard of polysomnography (PSG, an overnight sleep study) is primarily limited by a) a lack of reliability based on too short (e.g., 24 or 48 hours) of an assessment period to capture night-to-night variability, b) a lack of ecological validity (e.g., full PSG in a laboratory setting), and c) a lack of generalizability due to limited or special populations (e.g., individuals with insomnia). Barriers such as prohibitive cost, extensive setup time, and personnel training requirements diminish the ability of researchers to conduct measurement comparison studies using gold standard measures like traditional PSG. These barriers can be circumvented with the use of low-cost, minimally invasive single-channel EEG devices (e.g., Zmachine), but to date few studies have employed these devices. The current study evaluated the accuracy of retrospective surveys, sleep diaries, and actigraphy compared …
Date: August 2019
Creator: Dietch, Jessica R.
System: The UNT Digital Library
Adult Attachment, Cultural Orientation and Sacrifice in Couples: A Comparison between American and Chinese Samples (open access)

Adult Attachment, Cultural Orientation and Sacrifice in Couples: A Comparison between American and Chinese Samples

The present study examined the effects of adult attachment and cultural orientation on sacrifice behaviors and the corresponding emotional reactions, using a cross-cultural sample in the U.S. and China. Strain-tests protocol was utilized in this study, in which an individual (i.e., the asker) was asked to share with their romantic partner a personal goal that required a major sacrifice from their partner (i.e., the responder), and then entered a discussion to process their plan of carrying out this goal. The final sample included 115 couples from the U.S. and 99 couples from China. Results indicated that responder's attachment avoidance was negatively associated with sacrifice offered to their partners and they reported more positive emotions as a result. The interaction between attachment anxiety and nationality was significant. Specifically, in the U.S. sample, individuals with high attachment anxiety were more likely to offer sacrifice for their partners, but this effect was reversed in the Chinese sample. In addition, interdependent self-construal (ISC) was a significant moderator for the relation between attachment anxiety and sacrifice behavior. Individuals who endorsed higher ISC and higher anxious attachment were less likely to make sacrifice for their partner. Furthermore, when individual offered more sacrifice, they reported more positive …
Date: August 2019
Creator: Zhu, Wenzhen
System: The UNT Digital Library
An Alternative Operationalization of Betrayal Trauma using Perceived Betrayal (open access)

An Alternative Operationalization of Betrayal Trauma using Perceived Betrayal

There are many identified factors that correlate with whether an individual experiences adverse symptoms following a traumatic event. Research indicates that betrayal, where the victim is betrayed by another individual, may be one of these factors. Betrayal Trauma Theory (BTT) posits that betrayal during trauma increases the likelihood of developing adverse psychological symptoms. BTT objectively dichotomizes traumas as high betrayal or low betrayal traumas based on details of the event. Though literature finds those who experience high betrayals experience more severe symptoms of PTSD, depression, anxiety, and dissociation than those who experience low betrayals, this objective classification is limited as it is based solely on the circumstances of the trauma and does not give the victim the option of indicating whether they felt betrayed. We believe perceptions of betrayal, whether the event meets the objective criteria of betrayal put forth by BTT or not, is an important predictor of trauma-related outcomes. This study (N = 244) found that perceived betrayal predicts symptoms of PTSD and depression independently, as well as when controlling for objective betrayal, dependence on the perpetrator, event centrality, anxiety, and dissociation. These findings indicate perceived betrayal is a unique construct that should be included in the operationalization …
Date: December 2019
Creator: Bedford, Lee
System: The UNT Digital Library
Are You a Good Witch or a Bad Witch? The Importance of Object Relations in Modern Assessment (open access)

Are You a Good Witch or a Bad Witch? The Importance of Object Relations in Modern Assessment

The Social Cognition and Object Relations Scale—Global (SCORS-G) is a relatively new scoring system for the Thematic Apperception Test (TAT) that provides information about an individual's functioning in a variety of domains, including intrapsychic and interpersonal. Participants in this archival study had been administered a variety of measures as part of a routine clinical assessment, including the TAT, Rorschach, Minnesota Multiphasic Personality Inventory-2, and the Wechsler Adult Intelligence Scale. Selected TAT stories were rescored using current SCORS-G scoring criteria. This dissertation evaluated the factor structure of the SCORS-G in an outpatient sample with a principal component analysis (PCA), finding support for a two-component solution. The SCORS-G was then compared to well-established measures of personality functioning, social cognition, and object relations using correlational analyses, with mixed results. Lastly, support was found for using the SCORS-G as a tool for discriminating individuals with a history of violent or problematic relationships from those without such a history. Implications for card selection based on card pull and the impact of bland protocols were explored.
Date: August 2019
Creator: Weber, Katherine Mary
System: The UNT Digital Library

Bipolar Spectrum Traits in Day-to-Day Life: Ecological Momentary Assessment of Reward Sensitivity, Circadian Timing, and Experience of Reward in the Environment

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The current study examined 236 undergraduate students in a week long twice-per-day ecological momentary assessment exploring the influence of baseline reward sensitivity and interactions between circadian variables (i.e., total sleep time, sleep quality) and daily measures of reward. Though primary study findings did not support reward sensitivity related moderation of sleep-reward pathways, a number of notable findings emerged. We found evidence of specific domains of reward sensitivity (anticipatory reward and reward responsiveness) which are uniquely related to daily experiences of reward. In addition, bidirectional circadian-reward pathways were found between sleep quality and daily rewards which suggests pathways towards reward-related engagement. Evidence also supported interactions between sleep quality and total sleep time on experience of daily reward, further highlighting the complexity of sleep-reward pathways and their relevance to mood symptoms.
Date: August 2019
Creator: Smith, Patrick M.
System: The UNT Digital Library
Bouncing Back: Resilience as a Moderator between Aggression and Depression in Older Gay Men and Lesbians Group Differences (open access)

Bouncing Back: Resilience as a Moderator between Aggression and Depression in Older Gay Men and Lesbians Group Differences

Older gay men and lesbians may be at greater risk for depression than older sexual majority adults due to a lifetime of sexual minority stress. We hypothesize that aggression and being single are positively associated with depression. Resilience is negatively associated with depression. Aggression, being single and resilience account for a significant proportion of variance in depression. Resilience moderates the relationship between aggression and depression. Significant differences between older gay men and older lesbians' aggression, resilience and depression scores exist. For our older gay men and lesbian combined group, a moderation analysis indicated that in addition to aggression and resilience, being single significantly predicted depression accounting for approximately 57% of the variance in depression. Furthermore, resilience significantly moderated the relationship between aggression and depression in our model of older gay men and lesbians. For our older gay men-only group a moderation analysis (indicated that and resilience significantly predicted depression accounting for approximately 57% of the variance in depression. Furthermore, resilience significantly moderated the relationship between aggression and depression in our model, in our sample of older gay men. Four our lesbian-only group a moderation analysis indicated that being single and resilience significantly predicted depression accounting for approximately 54% of the …
Date: May 2019
Creator: Griggs, Tosha
System: The UNT Digital Library

Comparing Cognitive Functioning in White Mexican/Mexican Americans and non-Hispanic White Americans with and without Type 2 Diabetes

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To better understand the impact of type 2 diabetes, the relationship between ethnicity, specifically Mexican/Mexican American ethnicity, and the disease must be further investigated. This study specifically examined the cognitive impact of type 2 diabetes. Data from the 2014 Health and Retirement Study was used to compare the cognitive functioning of non-Hispanic White (n = 10,658) and White Mexican/Mexican American (n = 847) individuals, age 50+ years, with and without type 2 diabetes. Serial 7's and immediate and delayed recall—hypothesized to be more negatively affected by type 2 diabetes and Mexican American status—was compared controlling for age, education, and depression. A multivariate analysis of covariance (MANCOVA) indicated significant main effects for race/ethnicity (F(3,11496) = 11.15, p < .001) and diabetes status (F(3,11496) = 3.15, p < .024), with Mexican Americans and those with diabetes having worse cognitive performance. There were significant effects for all covariates. A step-wise multiple regression indicated that education, age, depression, race/ethnicity and diabetes status accounted for a combined 28.4% of variance in a cognitive performance composite. Implications for assessment and treatment are discussed.
Date: August 2019
Creator: Saldana, Samantha Lee
System: The UNT Digital Library

Depression, Religious Behaviors and Social Support as Predictors of Health-Related Quality of Life among HIV Positive Individuals

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The goal of the current study was to evaluate the ways in which religious behaviors and perceived social support are associated with the relationship between depressive symptoms and health-related quality of life for this group. We hypothesized (1) that religious behaviors moderate the relationship between depressive symptoms and health-related quality of life, (2) perceived social support mediates the relationship between depressive symptoms and health-related quality of life and (3) that religious behaviors moderate the mediational indirect effect of perceived social support in the depression and health-related quality of life relationship. Findings from a sample of 244 HIV-positive individuals provided evidence to support direct, conditional, and indirect effects on the depressive symptoms and health-related quality of life relationship. A discussion of the findings, implications for future research and clinical practice are provided.
Date: December 2019
Creator: Davis, Cameron W
System: The UNT Digital Library
Determining the Diagnostic Accuracy of and Interpretation Guidelines for the Complex Trauma Inventory (CTI) (open access)

Determining the Diagnostic Accuracy of and Interpretation Guidelines for the Complex Trauma Inventory (CTI)

The work group in charge of editing the trauma disorders in the upcoming edition of the International Classification of Diseases (ICD-11) made several changes to the trauma criteria. Specifically, they simplified the criteria for posttraumatic stress disorder (PTSD) and added a new trauma disorder called complex PTSD (CPTSD). To assess the new and newly defined trauma disorders, Litvin, Kaminski and Riggs developed a self-report trauma measure called the Complex Trauma Inventory (CTI). Although the reliability and validity of the CTI has been supported, no empirically-derived cutoff scores exist. We determined the optimal CTI cutoff scores using receiver operating characteristic (ROC) analyses in a diverse sample of 82 participants who experienced trauma and were recruited from an inpatient trauma unit, student veteran organizations, and university classrooms. We used the Clinician-Administered Interview for Trauma Disorders (CAIT) to diagnose the presence of an ICD-11 trauma disorder, and we correlated the results of the CAIT with the Clinician-Administered PTSD Scale for the DSM-5 to establish the convergent validity of the CAIT, r = .945, p < .001. For the ROC analyses, the CTI was used as the index test and the CAIT was used as the criterion test. The area under the curve (AUC) …
Date: December 2019
Creator: Litvin, Justin M.
System: The UNT Digital Library
Differences in Coping Strategies and Multifaceted Psychological Outcomes among Trauma Survivors (open access)

Differences in Coping Strategies and Multifaceted Psychological Outcomes among Trauma Survivors

The World Health Organization has proposed for the ICD-11 a differentiation of symptoms to distinguish separate disorders of PTSD and complex PTSD (CPTSD), rather than one disorder of PTSD as in the current DSM-5. In addition, the accuracy and usefulness of the borderline personality disorder (BPD) diagnosis has been debated for years due to this history of trauma often associated with the diagnosis. New instruments have been developed to assess CPTSD, allowing needed research to expand our understanding of CPTSD and how it may differ from PTSD. The present study explored the relationships between the three different patterns of symptom expression associated with these disorders and various coping strategies in a sample of trauma survivors. A canonical correlation analysis (CCA) showed a significant relationship between trauma symptoms and coping strategies and suggested that individuals with higher borderline personality disorder symptoms, and subsequently complex PTSD and PTSD symptoms, were more likely to cope using avoidant coping strategies- behavioral disengagement, denial, and substance use. This finding was similar to previous research findings that suggested high rates of negative psychological outcomes for adults cognitive and behavioral avoidant coping strategies. Contributions from other coping techniques, such as restraint and venting, also showed significant, but …
Date: August 2019
Creator: Flachs, Amanda Shaunessy
System: The UNT Digital Library
Discrimination, Attachment, and Ethnic Identity as Predictors for Wellbeing and American Affirmation among Racial and Ethnic Minority University Students (open access)

Discrimination, Attachment, and Ethnic Identity as Predictors for Wellbeing and American Affirmation among Racial and Ethnic Minority University Students

Extant literature has provided evidence suggesting that ethnic minority individuals experiencing discrimination report poor mental health outcomes, including depression, anxiety, and an overall lower sense of belongingness with the majority culture, but empirical research examining how ethnic identity affects this relationship is extremely scarce. The first goal of the current study was to replicate the results of previous studies demonstrating a strong relationship between discrimination and selected wellbeing indicators: meaning in life, American affirmation, depression, and life satisfaction. The second goal of the study was to examine a moderation model and two moderated moderation models that depict the relationships among adult attachment, the affective component of ethnic identity, exploration and commitment to ethnic identity, and wellbeing indicators. Data was collected from 206 students who were recruited from undergraduate psychology courses. Findings provided partial support to the direct effects of discrimination on various wellbeing indicators but did not support the moderating effect of ethnic identity. Additionally, adult attachment, ethnic identity, and discrimination were not found to significantly interact, but the relationship between discrimination, ethnic identity, and American affirmation was found to be significantly moderated by the affective component of ethnic identity. Discussion on the findings, limitations of the study, future research …
Date: August 2019
Creator: Khan, Arubah
System: The UNT Digital Library

The Effect of Trauma Experiences and PTSD Severity on Positive Memory Recall and Memory Phenomenology

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Positive memories play an important role in the etiology and maintenance of posttraumatic stress disorder (PTSD). Additionally, there are potential clinical benefits of recalling positive memories on affect, cognitions, and behaviors. However, most research/clinical work has focused on the role of traumatic memories in PTSD's symptomatology and treatment. The current study examined positive memory recall difficulties and positive memory phenomenology among 185 trauma-exposed individuals with varying PTSD severity. Participants completed the Life Events Checklist for DSM-5, PTSD Checklist for DSM-5, Autobiographical Memory Test, Memory Experiences Questionnaire – Short Form, Ruminative Thought Style Questionnaire, Difficulties in Emotional Regulation Scale – Brief 16-Item Version, Difficulties in Emotional Regulation Scale – Positive Emotions, the Positive Affect subscale of the Affective Control Scale, and two items from the Pittsburg Sleep Quality Index. Results showed that (1) greater PTSD severity was a marginally significant predictor of fewer recalled positive memories; (2) greater positive emotional dysregulation predicted fewer recalled positive memories controlling for PTSD severity; and (3) increasing PTSD severity predicted more negative valence, less vividness, less coherence, less accessibility, less clear time perspective, fewer sensory details, and greater distancing ratings of the recalled positive memory, controlling for sleep quantity/quality. Such findings add to the PTSD-positive …
Date: May 2019
Creator: Dolan, Megan
System: The UNT Digital Library
The Effects of Suggestibility, Compliance, and Situational Stress on Miranda Abilities, Waiver Decisions, and False Confessions (open access)

The Effects of Suggestibility, Compliance, and Situational Stress on Miranda Abilities, Waiver Decisions, and False Confessions

Miranda abilities, individual characteristics, and contextual factors are critical elements to evaluate in determining the validity of Miranda rights waivers and confessions. Research indicates that many individuals waive their Miranda rights without adequate comprehension or reasoning. In addition, personality characteristics of suggestibility and compliance are key factors influencing waiver decisions. Furthermore, scholars found that situational anxiety likewise impairs Miranda abilities and waiver decisions. Previous research has investigated the effects of Miranda abilities, individual characteristics, and contextual factors on Miranda waivers and confessions by utilizing confession paradigms. A methodological limitation of these paradigms is the lack of volition and autonomy in committing the accused acts of wrongdoings. The current study of undergraduate students advances previous research through examining the detrimental impact of false accusations of wrongdoings committed independently and intentionally using a novel paradigm. This thesis sought to further the understanding of the effects of Miranda abilities (i.e., comprehension and reasoning), personality characteristics (i.e., suggestibility and compliance), and situational factors (i.e., false accusation) in relation to Miranda waivers and confession decisions. The final sample included 87 undergraduate students, of whom approximately 97% waived their rights and 40% falsely confessed to the wrongdoing. The results indicate that Miranda reasoning, suggestibility, and compliance …
Date: August 2019
Creator: Otal, Tanveer K.
System: The UNT Digital Library
An Examination of Risk and Resilience Factors Predicting Executive Functioning in Women following Psychological Trauma (open access)

An Examination of Risk and Resilience Factors Predicting Executive Functioning in Women following Psychological Trauma

Psychological trauma may affect higher-order executive functions, which include selective attention, inhibition, and task-switching processes. Difficulty in these executive processes can in turn influence individuals' daily functioning and may also negatively affect the psychological treatment of post-trauma symptoms. Women may be most at risk for developing problems with executive functioning following trauma, consistent with their overall greater risk of developing post-trauma symptoms. Yet, little is understood about the influence of psychological variables, premorbid functioning, and specific trauma factors in determining post-trauma cognitive functioning in women. Additionally, individual variability in susceptibility to psychological distress and neuropsychological deficits following trauma remains an open area of study. The present study investigated the relationship between psychological and trauma factors with neuropsychological outcomes in women with trauma histories as well as individual variability in risk for poor neuropsychological outcomes. In total, 60 participants' data (age M = 29.73, SD = 10.91) were included in analyses. The final sample consisted of 33 community members recruited from the UNT Psychology Clinic and the UNT student body and 27 veterans recruited from the Veterans Affairs North Texas Healthcare System (VANTHCS). Regression and path analysis identified premorbid intellectual functioning as a predictor of better neuropsychological outcomes and anxiety and …
Date: August 2019
Creator: Sullivan, Erin
System: The UNT Digital Library
Examining the Relationship between Bullying Experiences, Parental Partner Violence, and Partner Violence in Young Adulthood (open access)

Examining the Relationship between Bullying Experiences, Parental Partner Violence, and Partner Violence in Young Adulthood

The current study used secondary analysis of existing data to examine associations between bullying experiences, parental partner violence, and partner violence in young adulthood. We hypothesized that bullying in adolescence would be associated with witnessing parental IPV in adolescence and IPV in young adulthood. We believed that deficits in social information processing, particularly hostile attribution biases, would be associated with adolescent bullying. Lastly, we believed that decentering would act as a moderator, affecting the relationship between adolescent bullying and IPV in adulthood. We used correlational and moderation analyses to examine these hypotheses and found that relational bullying victimization was associated with witnessing parental IPV, and the frequency of bullying perpetration was associated with IPV perpetration in adulthood. We found that some aspects of bullying victimization were negatively associated with being unassertive, bullying perpetration was associated with hostile attribution biases, and the relationship between bullying and IPV was significant only at certain levels of decentering maturity.
Date: December 2019
Creator: Sanders, Courtney
System: The UNT Digital Library
An Experimental Study of Mindfulness and Acceptance-Based Skills for Internalized Ageism in Older Adults and College Students (open access)

An Experimental Study of Mindfulness and Acceptance-Based Skills for Internalized Ageism in Older Adults and College Students

This project explored whether mindfulness and acceptance-based practices (MABPs) for older adults would reduce the negative effects of ageism and negative attitudes and beliefs related to aging. In addition, state affect and stress were explored. This study used an experimental design to compare two groups of older adults and two groups of undergraduate students – those who received a MABP and those who did not, after being presented with negative ageist stereotypes. Condition and condition by age sample comparisons revealed several findings. Following the MABP, undergraduates who received a MABP had significantly lower ageism scores than did undergraduates who did not. Older adult findings were opposite of proposed hypotheses, with older adults having higher scores on ageism after receiving the MABP, as compared to the scores of older adults who were in the comparison condition. Differences in state mindfulness were seen between conditions, with the MABP condition exhibiting more state mindfulness than in the comparison condition. However, there was no significant condition by age sample interaction effect. Change scores for state affect after the MABP were non-significant at either level of analysis, and older adults showed no difference in digit span stress scores based on their condition assignment. Exploratory analyses …
Date: August 2019
Creator: Lester, Ethan G.
System: The UNT Digital Library
Exploring Predictors of Self-Forgiveness (open access)

Exploring Predictors of Self-Forgiveness

Self-forgiveness is a growing sub-field of the broader study of forgiveness, and initial research has linked self-forgiveness to positive mental and physical health outcomes. However, the extant literature on self-forgiveness is in its infancy, and there is a need for further research to understand the predictors of self-forgiveness and the clinical implications that might follow. The current study aimed to build on the extant literature by exploring two sets of predictors of self-forgiveness: (1) the four Rs as proposed in Cornish and Wade's four-R therapeutic model of self-forgiveness (i.e., responsibility, remorse, restoration, and renewal) and (2) personality as measured by the Big Five. This study also explored how responsibility for the offense and humility might moderate the relationship between self-forgiveness and well-being. Participants were undergraduates recruited from a large, public university in the southwestern United States. They were instructed to describe a recent interpersonal offense they had committed and complete a questionnaire. The overall results suggest that there is a negative cross-sectional relationship between responsibility, remorse, and restoration with self-forgiveness and that, when taken together, the four-Rs account for a significant amount of variance in self-forgiveness. Neuroticism was negatively associated with self-forgiveness while conscientiousness and extraversion were positively associated with …
Date: December 2019
Creator: Coomes, Steven P.
System: The UNT Digital Library
Exploring Psychosocial Correlates of Disordered Eating among Male Collegiate Athletes (open access)

Exploring Psychosocial Correlates of Disordered Eating among Male Collegiate Athletes

In research on disordered eating in female collegiate athletes, psychosocial correlates including elevated scores on measures of body image concerns, weight pressures, sociocultural internalization, and mood state were found significantly more often in either the eating disorder or symptomatic group as opposed to the asymptomatic group. Unique or nuanced pressures exist for male athletes as well, specifically a different ideal for body image, often described by a drive for muscularity. I examined these effects in a sample of 698 male collegiate athletes. All participants completed questionnaires, which provided measures of drive for muscularity, social desirability, body satisfaction, negative affect, sociocultural pressures, sport weight pressures, and internalization and social comparison among other factors not pertinent for this analysis as part of a larger study. Exploratory factor analysis confirmed the existence of five factors (general and sport pressures, internalization, body dissatisfaction, negative affect and drive for muscularity) to which a sixth was added to reflect dietary intent, all of which are explained in the Petrie and Greenleaf sociocultural model. A logistic regression showed that dietary intent and drive for muscularity differentiated significantly between the symptomatic/eating disordered athletes and those who were asymptomatic.
Date: December 2019
Creator: Mack, Dalton L.
System: The UNT Digital Library
External Validation of the MMPI-A-RF with Youth with Mental Health Needs: A Systematic Examination of Symptom-Based Correlates and Interpretive Statements (open access)

External Validation of the MMPI-A-RF with Youth with Mental Health Needs: A Systematic Examination of Symptom-Based Correlates and Interpretive Statements

Over the last several decades, the Minnesota Multiphasic Personality Inventory - Adolescent (MMPI-A) has remained one of the most extensively studied and commonly used adolescent assessment measures. Most recently, the MMPI-A was revised, published as the Minnesota Multiphasic Personality Inventory - Adolescent Restructured Form (MMPI-A-RF). Given the infancy of the extant MMPI-A-RF literature, the current dissertation sought to be one of the first criterion studies since the test manual to establish its relevant clinical correlates in a sample of youth referred for mental health services. Following in line with previous clinical correlate research, the psychometric properties of the MMPI-A-RF were determined. Under this approach, the present study bolstered support for the construct validity of the RC scales through the identification of clinically relevant, scale and item-level correlates. In particular, the RCd and RC4 evidenced especially strong convergent and discriminant validity. As a result, the current study highlighted the MMPI-A-RF's efficacy in detecting psychopathology along the broad externalizing and internalizing spectrum. In addition, the role of gender and its effect on MMPI-A-RF clinical interpretations were explored. Practical recommendations for ensuring a gender-specific approach to MMPI-A-RF interpretation were outlined.
Date: August 2019
Creator: Sharf, Allyson J.
System: The UNT Digital Library
Fatigue and Inhibitory Control: A Test of Key Implications of an Emerging Analysis of Behavioral Restraint Intensity (open access)

Fatigue and Inhibitory Control: A Test of Key Implications of an Emerging Analysis of Behavioral Restraint Intensity

Agtarap, Wright, Mlynski, Hammad, and Blackledge took an initial step in providing support for the predictive validity of a new conceptual analysis concerned with behavioral restraint - defined as active resistance against a behavioral impulse or urge. The current study was designed to partially replicate and extend findings from their study, employing a common film clip protocol and a procedure for inducing low- and high levels of fatigue. Analyses indicated that key cardiovascular (CV) responses rose with the evocativeness of the film clip among low fatigue participants but fell with the evocativeness of the film clip among high fatigue participants. This is consistent with the prediction that high fatigue participants would put forth more restrain intensity than low fatigue participants when confronted with the less evocative clip, but less restraint intensity than low fatigue participants when confronted with the more evocative clip. Behavioral restraint performance - quantified as duration of facial non-neutrality - was also consistent with predictions, being impaired by fatigue under high- but not low evocativeness conditions. Findings support the broad theoretical suggestion that fatigue influence on behavioral restraint is multifaceted, dependent on the perceived magnitude of the impulse or urge experienced and the importance of resisting it.
Date: December 2019
Creator: Mlynski, Christopher
System: The UNT Digital Library
Finding a Data-Driven Definition of Binge-Watching (open access)

Finding a Data-Driven Definition of Binge-Watching

Binge-watching, the act of watching large amounts of television at a time, has become a popular phenomenon internationally; however, it has yet to be sufficiently defined. In order to define binge-watching, data was collected on specific watching instances from 216 undergraduate students at a large research university. Hierarchical and k-means cluster analyses were conducted in Phase I to empirically determine how binge-watching should be defined. In Phase II, that definition was tested by correlating the number of instances of binge-watching in a one-week period, collected by seven days of daily diary logs, with several theoretically related measures including body mass index, dissociative tendencies, psychological distress, compulsion to watch, boredom proneness, and escapism through watching. The data-driven definition was found to be that eight hours or more of continuous watching was binge-watching, while anything less than that was not. In Phase II, the frequency of binge-watching through the seven-day period was calculated based on that new definition. The frequency of binge-watching was positively correlated with body mass index and dissociative tendencies with statistical significance at the alpha = .05 level. Compulsion to watch was not statistically significant; however, there was a positive correlation. These findings indicate that the proposed data-driven definition …
Date: December 2019
Creator: Kelly, Megan Erin
System: The UNT Digital Library
Healthy Eating in College Students: 24-Hour Dietary Recall and the Theory of Planned Behavior (open access)

Healthy Eating in College Students: 24-Hour Dietary Recall and the Theory of Planned Behavior

The transition to college is marked by poorer eating behaviors. The Theory of planned behavior (TPB) represents a promising tool for predicting eating behaviors through the examination of attitudes (ATT), subjective norms (SN), perceived behavioral control (PBC), and intention (INT). Despite prior application of the TPB, there exist several key methodological issues in the literature addressing eating behaviors. The present study utilized an enhanced dietary assessment methodology, the ASA24 dietary recall, and a short-term prospective design to assess the healthy eating behaviors of emerging adults in college. Dietary recalls of 68 participants (average age = 20.76 years; 70.6% female; 70.6% non-Hispanic, 48.5% White, 22.10% Black/African American, 13.20% Asian) were analyzed using the Healthy Eating Index (HEI)-2010 scoring system. Results revealed that very few college students are meeting recommended dietary guidelines. Linear regression indicated that the indirect TPB variables (ATT, SN, and PBC) were related to INT (F[3,64] = 19.67, p < .001), although SN did not account for unique variance. Further, the direct TPB variables (INT and PBC) were related to HEI-2010 scores (F[2,65] = 4.00, p = .023); however, only PBC accounted for significant variance. Overall, findings suggest that more favorable attitudes relate to intention, but only perceived behavioral …
Date: August 2019
Creator: Douglas, Megan E.
System: The UNT Digital Library

Improving Actigraphy Specificity to Better Inform Insomnia Diagnosis and Treatment Decisions

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Accurate assessment of sleep-wake patterns is important for sleep researchers and clinicians. Actigraphs are low-cost, non-intrusive, wrist-worn activity detectors used to estimate sleep-wake patterns in a natural environment for several nights. Although actigraphy shows good sensitivity (sleep detection), it has consistently demonstrated poor specificity (wakefulness detection while lying in bed relatively motionless). Because insomnia is characterized by wakefulness in bed, actigraphy may not be a valid objective measure of wakefulness for this group. It is possible that refinement of actigraphy software settings for sleep/wake algorithms might improve specificity. The current studies investigated this hypothesis by comparing wake parameters from 48 combinations of actigraphy settings to determine which sleep/wake algorithms best inform insomnia diagnosis and treatment. In the first study, none of the 48 actigraphy setting combinations consistently discriminated between adults with insomnia (n = 69) and non-insomnia (n = 80) on all three wake parameters, and no setting clearly discriminated between groups for the composite variable, total wake time. Similarly, in the second study, no setting combinations consistently discriminated between adults treated for insomnia (n = 18) and controls with untreated insomnia (n = 26) on all three wake parameters. Although two setting combinations discriminated between groups for the composite …
Date: August 2019
Creator: Francetich, Jade Marie
System: The UNT Digital Library

Independence of Mania and Depression across 4 Years in Bipolar Disorder

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If mania and depression are part of the same pathological processes, one would predict that episodes of one prospectively increase the odds of episodes of the other. The aim of the present study was to test this hypothesis. For comparison purposes, their relationship was contrasted to the relationship between mania and periods of psychosis. Exploratory analyses also tested the degree to which episodes of each occur with greater frequency over time (i.e., kindling). Participants for the present study came from the Suffolk County Mental Health Project (N = 628), a study of first-admission patients with psychosis. Of these participants, 144 met diagnostic criteria for bipolar I disorder and were analyzed for the current study. Results indicated that mania in a given month predicted depression the following month, even after controlling for other symptoms. The reverse, however, was not the case. Mania and psychosis, in contrast, were found to be robust predictors of one another from month to month. Effects were not due to treatment or demographic differences. These findings provide evidence that mania and depression are weakly related. In contrast, mania and psychosis are more closely linked. Findings are consistent with suggestions that psychiatric nosology regroup mania more closely with …
Date: May 2019
Creator: Bennett, Charles B.
System: The UNT Digital Library