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- All Subjects: psychology
- Creators: Presson, Clark
- Creators: Burleson, Mary
Description
This research is focused on two separate but related topics. The first uses an electroencephalographic (EEG) brain-computer interface (BCI) to explore the phenomenon of motor learning transfer. The second takes a closer look at the EEG-BCI itself and tests an alternate way of mapping EEG signals into machine commands. We test whether motor learning transfer is more related to use of shared neural structures between imagery and motor execution or to more generalized cognitive factors. Using an EEG-BCI, we train one group of participants to control the movements of a cursor using embodied motor imagery. A second group is trained to control the cursor using abstract motor imagery. A third control group practices moving the cursor using an arm and finger on a touch screen. We hypothesized that if motor learning transfer is related to the use of shared neural structures then the embodied motor imagery group would show more learning transfer than the abstract imaging group. If, on the other hand, motor learning transfer results from more general cognitive processes, then the abstract motor imagery group should also demonstrate motor learning transfer to the manual performance of the same task. Our findings support that motor learning transfer is due to the use of shared neural structures between imaging and motor execution of a task. The abstract group showed no motor learning transfer despite being better at EEG-BCI control than the embodied group. The fact that more participants were able to learn EEG-BCI control using abstract imagery suggests that abstract imagery may be more suitable for EEG-BCIs for some disabilities, while embodied imagery may be more suitable for others. In Part 2, EEG data collected in the above experiment was used to train an artificial neural network (ANN) to map EEG signals to machine commands. We found that our open-source ANN using spectrograms generated from SFFTs is fundamentally different and in some ways superior to Emotiv's proprietary method. Our use of novel combinations of existing technologies along with abstract and embodied imagery facilitates adaptive customization of EEG-BCI control to meet needs of individual users.
Contributorsda Silva, Flavio J. K (Author) / Mcbeath, Michael K (Thesis advisor) / Helms Tillery, Stephen (Committee member) / Presson, Clark (Committee member) / Sugar, Thomas (Committee member) / Arizona State University (Publisher)
Created2013
Description
Approximately one-third of Iraq and Afghanistan veterans develop mental health problems, yet only 35-40% of those with mental disorders are seeking mental healthcare (Hoge, et al., 2004; Vogt, 2011). Military spouses may be an important resource for facilitating treatment seeking (Warner, et al., 2008), especially if service member mental health issues are impacting the marriage. Military spouses might be hesitant to encourage service member help-seeking, however, due to perceived threat of adverse military career consequences. For this study, 62 military wives completed an online survey. As part of the survey, participants were randomly assigned to one of four vignettes containing a description of a hypothetical military husband with mental health symptoms. Each vignette presented different combinations of marital conflict (high versus low) and service member concerns about adverse career consequences (high versus low). Wives rated on a five-point scale how likely they were to encourage the hypothetical military husband to seek help. It was hypothesized that spouses would be more willing to encourage help-seeking when concerns about adverse military career consequences were low and marital distress was high. No main effects or interaction effect were found for marriage and career. Perceived stigma about seeking mental health treatment in the military, psychological identification as a military spouse, and experience and familiarity with military mental healthcare policies failed to moderate the relationship between marital conflict, career concerns, and encouragement of help-seeking. Correlational analyses revealed that (1) greater experience with military mental healthcare (first- or secondhand), and (2) greater perceptions of stigma regarding seeking mental healthcare in the military each were associated with decreased perceptions of military supportiveness of mental healthcare. Therefore, although the experimental manipulation in this study did not lead to differences in military spouses' encouragement of a hypothetical military service member to seek mental health services, other findings based on participants' actual experiences suggest that experiences with military mental healthcare may generate or reinforce negative perceptions of military mental healthcare. Altering actual experiences with military mental healthcare, in addition to perceptions of stigma, may be a useful area of intervention for military service members and spouses.
ContributorsHermosillo, Lori (Author) / Roberts, Nicole (Thesis advisor) / Burleson, Mary (Committee member) / Tinsley, Barbara (Committee member) / Arizona State University (Publisher)
Created2013
Description
The effects of over-the-counter drug (OTC) use on college students' health has been debated in the field of psychology with researchers arguing that poor sleep quality among college students is the result of polysubstance use. However, this explanation is not a foregone conclusion. These researchers have not adequately addressed the issue poor sleep quality among college students and its relationship to polysubstance use. This is an important issue because prolonged unsupervised OTC drug use and poor sleep quality can impact long-term health and lessen students' likelihood of being successful in college. This paper addresses the issue of OTC drug use with special attention to sleep quality. Pittsburgh Sleep Quality Index Scores were collected to assess subjective sleep quality and its relationship to OTC drug use. Several other risk factors including binge drinking, marijuana use, and illicit drug use were also accounted for in this model. This study argues that, although the current literature suggests that poor sleep quality is the effect of drug use rather than the cause; the relationships between these factors are still unclear. This study aims to fill a gap in the college drug use literature by establishing a relationship between poor sleep quality and OTC drug use in a college sample.
ContributorsLara, Gustavo (Author) / Vargas, Perla (Thesis advisor) / Burleson, Mary (Committee member) / Robles-Sotelo, Elias (Committee member) / Arizona State University (Publisher)
Created2014
Description
Although research has documented robust prospective relationships between externalizing symptomatology and subsequent binge drinking among adolescents, the extent to which internalizing symptoms increase risk for drinking remains controversial. In particular, the role of anxiety as a predictor of binge drinking remains unclear. Recent evidence suggests that one possible reason for these mixed findings is that separate dimensions of anxiety may differentially confer risk for alcohol use. The present study tested two dimensions of anxiety - worry and physiological anxiety -- as predictors of binge drinking in a longitudinal study of juvenile delinquents. Overall, results indicate that worry and physiological anxiety showed differential relations with drinking behavior. In general, worry was protective against alcohol use, whereas physiological anxiety conferred risk for binge drinking, but both effects were conditional on levels of offending. Implications for future research examining the role of anxiety in predicting drinking behavior among youth are discussed.
ContributorsNichter, Brandon (Author) / Chassin, Laurie (Thesis advisor) / Barrera, Manuel (Committee member) / Presson, Clark (Committee member) / Arizona State University (Publisher)
Created2014
Description
Fibromyalgia (FM) is a chronic musculoskeletal disorder characterized by widespread pain, fatigue, and a variety of other comorbid physiological and psychological characteristics, including a deficit of positive affect. Recently, the focus of research on the pathophysiology of FM has considered the role of a number of genomic variants. In the current manuscript, case-control analyses did not support the hypothesis that FM patients would differ from other chronic pain groups in catechol-O-methyltransferase (COMT) and mu-opioid receptor (OPRM1) genotype. However, evidence is provided in support of the hypothesis that functional single nucleotide polymorphisms on the COMT and OPRM1 genes would be associated with risk and resilience, respectively, in a dual processing model of pain-related positive affective regulation in FM. Forty-six female patients with a physician-confirmed diagnosis of FM completed an electronic diary that included once-daily assessments of positive affect and soft tissue pain. Multilevel modeling yielded a significant gene X environment interaction, such that individuals with met/met genotype on COMT experienced a greater decline in positive affect as daily pain increased than did either val/met or val/val individuals. A gene X environment interaction for OPRM1 also emerged, indicating that individuals with at least one asp allele were more resilient to elevations in daily pain than those homozygous for the asn allele. In sum, the findings offer researchers ample reason to further investigate the contribution of the catecholamine and opioid systems, and their associated genomic variants, to the still poorly understood experience of FM.
ContributorsFinan, Patrick Hamilton (Author) / Zautra, Alex (Thesis advisor) / Davis, Mary (Committee member) / Lemery-Chalfant, Kathryn (Committee member) / Presson, Clark (Committee member) / Arizona State University (Publisher)
Created2011
Description
Researchers have found inconsistent effects (negative or positive) of social relationships on self-control capacity. The variation of findings may depend on the aspects of social relationships. In this study, rather than examining overall social relationships and self-control, characteristics in social relationships were clearly defined, including social support, social connection and social conflict, to determine their specific effects on self-control. An online survey study was conducted, and 292 college students filled out the survey. For data analysis, path analysis was utilized to examined the direct effect and indirect effect from social relationships to self-control. Results showed social connection and social conflict may indirectly associate with self-control through stress, but social support does not. It may suggest, in traditional stress buffering model, it is the social connection in social support that really reduce the stress. Concerning the direct effects, social support and social connection were significantly associated with self-control directly, but social conflict does not. This result may support the Social Baseline Theory that positive social relationships have direct regulating effects. Results are good for guidance of experimental manipulation of social relationships in study of social influences of self-control.
ContributorsGuan, Xin (Author) / Burleson, Mary (Thesis advisor) / Roberts, Nicole (Committee member) / Schweitzer, Nicholas (Committee member) / Arizona State University (Publisher)
Created2012
Description
When people pick up the phone to call a telephone quitline, they are taking an important step towards changing their smoking behavior. The current study investigated the role of a critical cognition in the cessation process--self-efficacy. Self-efficacy is thought to be influential in behavior change processes including those involved in the challenging process of stopping tobacco use. By applying basic principles of self-efficacy theory to smokers utilizing a telephone quitline, this study advanced our understanding of the nature of self-efficacy in a "real-world" cessation setting. Participants received between one and four intervention calls aimed at supporting them through their quit attempt. Concurrent with the initiation of this study, three items (confidence, stress, and urges) were added to the standard telephone protocol and assessed at each call. Two principal sets of hypotheses were tested using a combination of ANCOVAs and multiple regression analyses. The first set of hypotheses explored how self-efficacy and changes in self-efficacy within individuals were associated with cessation outcomes. Most research has found a positive linear relation between self-efficacy and quit outcomes, but this study tested the possibility that excessively high self-efficacy may actually reflect an overconfidence bias, and in some cases be negatively related to cessation outcomes. The second set of hypotheses addressed several smoking-related factors expected to affect self-efficacy. As predicted, higher baseline self-efficacy and increases in self-efficacy were associated with higher rates of quitting. However, contrary to predictions, there was no evidence that overconfidence led to diminished cessation success. Finally, as predicted, shorter duration of quit attempts, shorter time to relapse, and stronger urges all were associated with lower self-efficacy. In conclusion, understanding how self-efficacy and changes in self-efficacy affect and are affected by cessation outcomes is useful for informing both future research and current quitline intervention procedures.
ContributorsGoesling, Jenna (Author) / Barrera, Manuel (Thesis advisor) / Shiota, Lani (Committee member) / Enders, Craig (Committee member) / Presson, Clark (Committee member) / Arizona State University (Publisher)
Created2011
Description
Emotion regulation repertoire, or the number of emotion regulation strategies one is able to employ when needed, is an important element of emotion regulation flexibility. Emotion regulation flexibility, the ability to regulate in accordance with changing situational contexts and demands, is predictive of emotion regulation success. Currently, little is known about emotion regulation repertoire and its association with emotional health and well-being. In particular, more can be learned about how the different strategies in one’s repertoire interact, and which strategies show stronger relationships with mental health. The current study aimed to assess the relationship of different emotion regulation strategies to mental health, including their individual and combined influence. In addition, the interaction between the use of specific emotion regulation strategies and emotion regulation flexibility with respect to mental health was examined. I hypothesized (1a) reappraisal and (1b) acceptance, two strategies previously associated with positive psychological outcomes, would be significant predictors of mental health, and (2) better flexibility would predict better mental health. In addition, I hypothesized that (3) strategies often found to be maladaptive (suppression, distraction, rumination, and experiential avoidance) would have an inverse relationship with mental health. Finally, (4) maladaptive strategies would be associated with worse mental health for those lower in flexibility. These hypotheses were tested through a questionnaire as part of a larger in-lab study. Results revealed that reappraisal and rumination were the strongest predictors of mental health. Emotion regulation flexibility did not predict mental health or moderate the relationship between individual emotion regulation strategies and mental health. Results from this study suggest some emotion regulation strategies are stronger predictors of mental health than others. This will guide future research on specific emotion regulation strategies in a repertoire as well as their combined effect on mental health. Creating a clearer picture of how different strategies interact and influence mental health will also be vital for clinical interventions.
ContributorsSchmitt, Marin (Author) / Roberts, Nicole A. (Thesis advisor) / Burleson, Mary (Committee member) / Robles-Sotelo, Elias (Committee member) / Arizona State University (Publisher)
Created2018
Description
This study investigated whether research by researchers affiliated with a religious academic institution would be seen as of less scientific merit than research done by researchers affiliated with a nonreligious academic institution. Such a bias may exist given the different value systems underlying religion and science, the widespread perception of a conflict between religion and science, and research on differences in cognitive styles and stereotypes about religious versus nonreligious people. In this study, U.S. participants recruited from Amazon Mechanical Turk completed an online survey, which included an abstract of an article describing scientific research with authors’ names and academic institutions, and questions on perceived scientific merit, religiosity, spirituality, religion as Quest, and perceived conflict between religion and science. There was a significant difference in the perceived merit of the researchers, with the group believing the researchers were affiliated with a religious academic institution rating the research as lower in scientific merit than the group believing the researchers were affiliated with a nonreligious academic institution. The perceived level of conflict between religion and science was found to moderate the relationship, such that higher levels of perceived conflict between religion and science showed a greater difference in scientific merit between groups.
ContributorsPorter, Erik W (Author) / Hall, Deborah L. (Thesis advisor) / Mickelson, Kristin (Committee member) / Burleson, Mary (Committee member) / Arizona State University (Publisher)
Created2018
Description
Social scientists from many disciplines have examined trust, including trust between those with different religious affiliations, emotional antecedents of trust, and physiological correlates of trust. However, little is known about how all of these factors intersect to shape trust behaviors. The current study aimed to examine physiological responses while individuals engaged in a trust game with a religious in-group or out-group member. Participants were randomly assigned to one of four conditions in which they were presented with the target’s profile before playing the game. In each of the conditions the target was described as either Catholic or Muslim and as someone who engaged in either costly signaling or anti-costly signaling behavior. In addition to assessing the amount of money invested as a behavioral measure of trust, physiological responses, specifically cardiac interbeat interval (IBI) and respiratory sinus arrhythmia (RSA), were measured. I hypothesized that when playing the trust game with a Catholic target as opposed to a Muslim target, Christian participants would (1) report being more similar to the target, (2) trust the target more, (3) invest more money in the target, (4) have a more positive outlook on the amount invested, and (5) show greater cardiorespiratory down-regulation, reflected by increases in IBI and RSA. Findings revealed that Christian participants reported greater similarity and showed a non-significant trend toward reporting a more positive outlook on (greater confidence in/satisfaction with) their investment decision when playing a Catholic versus Muslim target. Additionally, Christian participants who played an anti-costly signaling Catholic target showed greater cardiorespiratory down-regulation (increases from baseline for IBI, reflecting slower heart rate, and increases in RSA) than Christian participants who played an anti-costly signaling Muslim target. Results from this study echo previous findings suggesting that perceived similarity may facilitate trust. Findings also are consistent with previous research suggesting that religious ingroup or outgroup membership may not be as influential in shaping trust decisions if the trustee is costly signaling; for anti-signaling, however, cardiorespiratory down-regulation to a religious ingroup member may be apparent. These physiological signals may provide interoceptive information about a peer’s trustworthiness.
ContributorsThibault, Stephanie A (Author) / Roberts, Nicole A. (Thesis advisor) / Burleson, Mary (Committee member) / Hall, Deborah (Committee member) / Arizona State University (Publisher)
Created2019