Matching Items (56)
Description
Positive alcohol outcome expectancies (AOEs) are consistent longitudinal predictors of later alcohol use; however, exclusion of solitary drinking contexts in the measurement of AOEs may have resulted in an underestimation of the importance of low arousal positive (LAP) effects. The current study aimed to clarify the literature on the association between AOEs and drinking outcomes by examining the role of drinking context in AOE measurement. Further, exclusion of contextual influences has also limited understanding of the unique effects of AOEs relative to subjective responses (SR) to alcohol. The present study addressed this important question by exploring relations between AOEs and SR when drinking context was held constant across parallel measures of these constructs. Understanding which of these factors drives relations between alcohol effects and drinking behavior has important implications for intervention. After conducting confirmatory factor analysis (CFA) and tests of measurement invariance for the AOE and SR measures, 4 aims collectively examined the role of context in reporting of AOEs (Aims 1 and 2), the extent to which context specific AOEs uniquely relate to drinking outcomes (Aim 3), and the importance of context effects on correspondence between AOEs and SR (Aim 4). Results of Aims 1 and 2 demonstrated that participants are imagining contexts when reporting on measures of AOEs that do not specify the context, and found significant mean differences in high and low arousal positive AOEs across contexts. Contrary to the hypotheses of Aim 3, context-specific AOEs were not significantly associated with drinking behavior. Results of Aim 4 indicated that while LAP AOEs for both unspecified and solitary contexts were associated with LAP SR in a solitary setting, unspecified context AOEs had a stronger relation than the solitary context AOEs. No significant relations between high arousal positive (HAP) AOEs and HAP SR emerged. The findings suggest that further investigation of the relation between context-specific AOEs and drinking outcomes/SR is warranted. Future studies of these hypotheses in samples with a wider range of drinking behavior, or at different stages of alcohol involvement, will elucidate whether mean level differences in context specific AOEs are important in understanding alcohol related outcomes.
ContributorsScott, Caitlin (Author) / Corbin, William (Thesis advisor) / MacKinnon, David (Committee member) / Barrera, Manuel (Committee member) / Chassin, Laurie (Committee member) / Arizona State University (Publisher)
Created2016
Description
Humans are capable of transferring learning for anticipatory control of dexterous object manipulation despite changes in degrees-of-freedom (DoF), i.e., switching from lifting an object with two fingers to lifting the same object with three fingers. However, the role that tactile information plays in this transfer of learning is unknown. In this study, subjects lifted an L-shaped object with two fingers (2-DoF), and then lifted the object with three fingers (3-DoF). The subjects were divided into two groups--one group performed the task wearing a glove (to reduce tactile sensibility) upon the switch to 3-DoF (glove group), while the other group did not wear the glove (control group). Compensatory moment (torque) was used as a measure to determine how well the subject could minimize the tilt of the object following the switch from 2-DoF to 3-DoF. Upon the switch to 3-DoF, subjects wearing the glove generated a compensatory moment (Mcom) that had a significantly higher error than the average of the last five trials at the end of the 3-DoF block (p = 0.012), while the control subjects did not demonstrate a significant difference in Mcom. Additional effects of the reduction in tactile sensibility were: (1) the grip force for the group of subjects wearing the glove was significantly higher in the 3-DoF trials compared to the 2-DoF trials (p = 0.014), while the grip force of the control subjects was not significantly different; (2) the difference in centers of pressure between the thumb and fingers (ΔCoP) significantly increased in the 3-DoF block for the group of subjects wearing the glove, while the ΔCoP of the control subjects was not significantly different; (3) lastly, the control subjects demonstrated a greater increase in lift force than the group of subjects wearing the glove (though results were not significant). Combined together, these results suggest different force modulation strategies are used depending on the amount of tactile feedback that is available to the subject. Therefore, reduction of tactile sensibility has important effects on subjects' ability to transfer learned manipulation across different DoF contexts.
ContributorsGaw, Nathan (Author) / Helms Tillery, Stephen (Thesis advisor) / Santello, Marco (Committee member) / Kleim, Jeffrey (Committee member) / Arizona State University (Publisher)
Created2014
Description
Previous research used the context-free Big Five model of personality traits to predict social media behaviors. The perspective implicit in this research assumes that expression of the Big Five is free of situational context. This thesis challenges this assumption to address whether people express the same Big Five on social media as offline. In two studies, this thesis addressed three issues: (1) whether there are self-reported differences in the Big Five between social media/online and offline contexts, (2) whether a five-factor structure replicates in the offline and social media context reports, and (3) whether the predictive validity of the Big Five is the same between offline and social media contexts. College students (total N = 2102) reported their offline and social media Big Five. Main findings reveal that, first, all of the Big Five have lower expressions in social media/online than offline, except for those in the lowest quartile of offline trait expressions; possible explanations include regression towards the mean or the environmental impact of social media. Second, a similar factor structure appeared with openness, extraversion, and neuroticism items being the most robust between offline and social media contexts. However, some conscientiousness and agreeableness items did not apply across offline and social media contexts. Third, the Big Five had different predictive patterns of social media behaviors depending on the context. These findings inform that future research may better serve to specify the context of Big Five expression to understand social media behavior.
ContributorsBunker, Cameron James (Author) / Kwan, Virginia S. Y. (Thesis advisor) / Edwards, Michael C. (Committee member) / Kenrick, Douglas T. (Committee member) / Arizona State University (Publisher)
Created2020
Description
Until the second half of the 20th century, publications on breathing techniques for woodwinds have been scarce and often failed to adequately address this aspect of performance and pedagogy. It is through various sensory experiences and because of recent technological advances that academics recognize a gap in the existing literature and have since included studies using various methods, as well as modern technical devices and experiments into the woodwind literature and teaching. These studies have proven to be of great importance to confirm ideas and hypotheses on the matter.
The aim of this project is to collect woodwind journal publications into a meta-analysis, focusing specifically on the breathing techniques for woodwind instruments and provide a comprehensive annotated bibliography on the topic and its application. The project is limited to journal articles on breathing techniques applied for woodwinds only, and will not review literature discussing breathing from other perspectives or in a broader sense.
Major findings show that misconceptions and contradictions on the subject still exist. At the same time, they also highlight unique approaches used to help the learner overcome general and specific challenges while mastering the art of breathing.
The project highlights areas where future research on breathing would be encouraged and should be complemented by measured data. Such studies might include a woodwind specific examination of the relationship between the tongue and the soft palate, or analysis of how tension in the torso muscles influences the movement of the diaphragm, or how rhythmical breathing affects breath control and capacity, and finally a discussion on how larynx influences the air stream.
The aim of this project is to collect woodwind journal publications into a meta-analysis, focusing specifically on the breathing techniques for woodwind instruments and provide a comprehensive annotated bibliography on the topic and its application. The project is limited to journal articles on breathing techniques applied for woodwinds only, and will not review literature discussing breathing from other perspectives or in a broader sense.
Major findings show that misconceptions and contradictions on the subject still exist. At the same time, they also highlight unique approaches used to help the learner overcome general and specific challenges while mastering the art of breathing.
The project highlights areas where future research on breathing would be encouraged and should be complemented by measured data. Such studies might include a woodwind specific examination of the relationship between the tongue and the soft palate, or analysis of how tension in the torso muscles influences the movement of the diaphragm, or how rhythmical breathing affects breath control and capacity, and finally a discussion on how larynx influences the air stream.
ContributorsJevtic-Somlai, Csaba (Author) / Spring, Robert (Thesis advisor) / Gardner, Joshua (Thesis advisor) / Humphreys, Jere (Committee member) / Suzuki, Kotoka (Committee member) / Arizona State University (Publisher)
Created2019
Description
Lifespan psychological perspectives have long suggested the context in which individuals live having the potential to shape the course of development across the adult lifespan. Thus, it is imperative to examine the role of both the objective and subjective neighborhood context in mitigating the consequences of lifetime adversity on mental and physical health. To address the research questions, data was used from a sample of 362 individuals in midlife who were assessed on lifetime adversity, multiple outcomes of mental and physical health and aspects of the objective and subjective neighborhood. Results showed that reporting more lifetime adversity was associated with poorer mental and physical health. Aspects of the objective and subjective neighborhood, such as green spaces moderated these relationships. The discussion focuses on potential mechanisms underlying why objective and subjective indicators of the neighborhood are protective against lifetime adversity.
ContributorsStaben, Omar E (Author) / Infurna, Frank J. (Thesis advisor) / Luthar, Suniya S. (Committee member) / Grimm, Kevin J. (Committee member) / Arizona State University (Publisher)
Created2019
Description
Increase in the usage of Internet of Things(IoT) devices across physical systems has provided a platform for continuous data collection, real-time monitoring, and extracting useful insights. Limited computing power and constrained resources on the IoT devices has driven the physical systems to rely on external resources such as cloud computing for handling compute-intensive and data-intensive processing. Recently, physical environments have began to explore the usage of edge devices for handling complex processing. However, these environments may face many challenges suchas uncertainty of device availability, uncertainty of data relevance, and large set of geographically dispersed devices. This research proposes the design of a reliable distributed management system that focuses on the following objectives: 1. improving the success rate of task completion in uncertain environments. 2. enhancing the reliability of the applications and 3. support latency sensitive applications. Main modules of the proposed system include:
1. A novel proactive user recruitment approach to improve the success rate of the task completion.
2.Contextual data acquisition and integration of false data detection for enhancing the reliability of the applications.
3. Novel distributed management of compute resources for achieving real-time monitoring and to support highly responsive
applications.
User recruitment approaches select the devices for offloading computation. Proposed proactive user recruitment module selects an optimized set of devices that match the resource requirements of the application. Contextual data acquisition
module banks on the contextual requirements for identifying the data sources that are more useful to the application. Proposed reliable distributed management system can be used as a framework for offloading the latency sensitive applications across the volunteer computing edge devices.
ContributorsCHAKATI, VINAYA (Author) / Gupta, Sandeep K.S (Thesis advisor) / Dasgupta, Partha (Committee member) / Banerjee, Ayan (Committee member) / Pal, Anamitra (Committee member) / Kumar, Karthik (Committee member) / Arizona State University (Publisher)
Created2021