Matching Items (195)
Description
The purpose of this study was to investigate the effect of partial exemplar experience on category formation and use. Participants had either complete or limited access to the three dimensions that defined categories by dimensions within different modalities. The concept of "crucial dimension" was introduced and the role it plays in category definition was explained. It was hypothesized that the effects of partial experience are not explained by a shifting of attention between dimensions (Taylor & Ross, 2009) but rather by an increased reliance on prototypical values used to fill in missing information during incomplete experiences. Results indicated that participants (1) do not fill in missing information with prototypical values, (2) integrate information less efficiently between different modalities than within a single modality, and (3) have difficulty learning only when partial experience prevents access to diagnostic information.
ContributorsCrawford, Thomas (Author) / Homa, Donald (Thesis advisor) / Mcbeath, Micheal (Committee member) / Glenberg, Arthur (Committee member) / Arizona State University (Publisher)
Created2011
Description
Intuitive decision making refers to decision making based on situational pattern recognition, which happens without deliberation. It is a fast and effortless process that occurs without complete awareness. Moreover, it is believed that implicit learning is one means by which a foundation for intuitive decision making is developed. Accordingly, the present study investigated several factors that affect implicit learning and the development of intuitive decision making in a simulated real-world environment: (1) simple versus complex situational patterns; (2) the diversity of the patterns to which an individual is exposed; (3) the underlying mechanisms. The results showed that simple patterns led to higher levels of implicit learning and intuitive decision-making accuracy than complex patterns; increased diversity enhanced implicit learning and intuitive decision-making accuracy; and an embodied mechanism, labeling, contributes to the development of intuitive decision making in a simulated real-world environment. The results suggest that simulated real-world environments can provide the basis for training intuitive decision making, that diversity is influential in the process of training intuitive decision making, and that labeling contributes to the development of intuitive decision making. These results are interpreted in the context of applied situations such as military applications involving remotely piloted aircraft.
ContributorsCovas-Smith, Christine Marie (Author) / Cooke, Nancy J. (Thesis advisor) / Patterson, Robert (Committee member) / Glenberg, Arthur (Committee member) / Homa, Donald (Committee member) / Arizona State University (Publisher)
Created2011
Description
Learning and transfer were investigated for a categorical structure in which relevant stimulus information could be mapped without loss from one modality to another. The category space was composed of three non-overlapping, linearly-separable categories. Each stimulus was composed of a sequence of on-off events that varied in duration and number of sub-events (complexity). Categories were learned visually, haptically, or auditorily, and transferred to the same or an alternate modality. The transfer set contained old, new, and prototype stimuli, and subjects made both classification and recognition judgments. The results showed an early learning advantage in the visual modality, with transfer performance varying among the conditions in both classification and recognition. In general, classification accuracy was highest for the category prototype, with false recognition of the category prototype higher in the cross-modality conditions. The results are discussed in terms of current theories in modality transfer, and shed preliminary light on categorical transfer of temporal stimuli.
ContributorsFerguson, Ryan (Author) / Homa, Donald (Thesis advisor) / Goldinger, Stephen (Committee member) / Glenberg, Arthur (Committee member) / Arizona State University (Publisher)
Created2011
Description
City managers and policy makers are increasing looking to environmental systems to provide beneficial services for urban systems. Constructed wetland systems (CWS), highly managed and designed wetland ecosystems, are being utilized to remove pollution, particularly excess nitrogen (N), from treated wastewater. Various wetland process remove N from effluent, such as denitrification, direct plant uptake, and soil accumulation. Emergent macrophytes provide direct uptake of N and improve conditions for microbially-mediated N processing. The role of different macrophytes species, however, is less understood and has primarily been examined in mesocosm and microcosm experiments and in mesic environments. I examined the effects of community composition on N removal and processing at the whole ecosystem scale in an aridland, constructed wetland (42 ha) through: 1) quantifying above- and belowground biomass and community composition from July 2011 \u2014 November 2012 using a non-destructive allometric technique, and; 2) quantifying macrophyte N content and direct macrophyte N uptake over the 2012 growing season. Average peak biomass in July 2011 & 2012 was 2,930 g dw/m2 and 2,340 g dw/m2, respectively. Typha spp. (Typha domingensis and Typha latifolia) comprised the majority (approximately 2/3) of live aboveground biomass throughout the sampling period. No statistically significant differences were observed in macrophyte N content among the six species present, with an overall average of 1.68% N in aboveground tissues and 1.29% N in belowground tissues. Per unit area of wetland, Typha spp. retained the most N (22 g/m2); total N retained by all species was 34 g/m2. System-wide direct plant N uptake was markedly lower than N input to the system and thus represented a small portion of system N processing. Soil accumulation of N also played a minor role, leaving denitrification as the likely process responsible for the majority of system N processing. Based on a literature review, macrophyte species composition likely influences denitrification through oxygen diffusion into soils and through the quality and quantity of carbon in leaf litter. While this study and the literature indicates Typha spp. may be the best species to promote wetland N processing, other considerations (e.g., bird habitat) and conditions (e.g., type of wastewater being treated) likely make mixed stands of macrophytes preferable in many applications. Additionally, this study demonstrated the importance of urban wetlands as scientific laboratories for scientists of all ages and as excellent stepping-off points for experiments of science-policy discourse.
ContributorsWeller, Nicholas Anton (Author) / Daniel L., Childers (Thesis director) / Grimm, Nancy (Committee member) / Turnbull, Laura (Committee member) / Barrett, The Honors College (Contributor) / School of Sustainability (Contributor) / School of Public Affairs (Contributor) / Graduate College (Contributor)
Created2013-05
Description
Most people are experts in some area of information; however, they may not be knowledgeable about other closely related areas. How knowledge is generalized to hierarchically related categories was explored. Past work has found little to no generalization to categories closely related to learned categories. These results do not fit well with other work focusing on attention during and after category learning. The current work attempted to merge these two areas of by creating a category structure with the best chance to detect generalization. Participants learned order level bird categories and family level wading bird categories. Then participants completed multiple measures to test generalization to old wading bird categories, new wading bird categories, owl and raptor categories, and lizard categories. As expected, the generalization measures converged on a single overall pattern of generalization. No generalization was found, except for already learned categories. This pattern fits well with past work on generalization within a hierarchy, but do not fit well with theories of dimensional attention. Reasons why these findings do not match are discussed, as well as directions for future research.
ContributorsLancaster, Matthew E (Author) / Homa, Donald (Thesis advisor) / Glenberg, Arthur (Committee member) / Chi, Michelene (Committee member) / Brewer, Gene (Committee member) / Arizona State University (Publisher)
Created2013
Description
Since the early 1990's, researchers have been looking at intersections between education and music. After a highly popular study correlating listening to Mozart to temporary increases in spatial reasoning, many other researchers tried to find a link between different musical genres and learning outcomes. Using three musical treatments (Pop, classical, silence), this study had subjects (N=34) complete a reading-based task whereupon they were tested on their comprehension. Using a suite of sensors, data was collected to analyze the participants' emotions and affect while they read from an educational psychology textbook. The present study has two major focuses: They detail whether (1) changes in musical condition affect learning outcomes and (2) whether changes in musical condition affect emotional outcomes. The popular conception that listening to classical music makes you smarter was proven false long ago, but there may actually be some merit to using music to assist one in studying. While there were no significant changes in test scores depending on musical condition; frustration levels were significantly lower for those who listened to classical instead of pop music.
ContributorsPaley, Benjamin Henry (Author) / Atkinson, Robert (Thesis director) / Feisst, Sabine (Committee member) / Barrett, The Honors College (Contributor) / School of Music (Contributor) / T. Denny Sanford School of Social and Family Dynamics (Contributor)
Created2015-05
Description
This project is a collection of four arrangements from Gustav Mahler’s Des Knaben Wunderhorn for French horn and marimba, with accompanying commentary. French horn and marimba is a beautiful combination that suffers from a lack of repertoire. These arrangements, composed by Kyle Nelson, are a step toward remedying that problem, while exploring the wide range of musical styles for which this combination is suited. The four songs that have been transcribed here are Urlicht, Wo die schönen Trompeten blasen, Der Tamboursg’sell, and Des Antonius von Padua Fischpredigt. Together, they provide a sampling of the many poems Mahler put to music in the late 1800’s for voice and piano. The sampling ranges from the very well-known (such as those featured in Mahler’s symphonies, like Urlicht) to one of the few lighthearted arrangements (Des Antonius von Padua Fischpredigt’s scherzo trio style) found in Mahler’s two original collections of lieder. The final product is performable as a duet with a talented horn and marimba duo, but in some circumstances it may be beneficial to divide the marimba part by stem direction and play as a trio on horn and two marimbas. The marimba part is best suited for four mallets on a 5-octave marimba.
ContributorsMartin, Stephanie Lorraine (Author) / Ericson, John (Thesis director) / Swoboda, Deanna (Committee member) / Barrett, The Honors College (Contributor) / School of Music (Contributor)
Created2015-05
Description
Hydrogen has the potential to be a highly efficient fuel source. Its current production via steam reformation of natural gas, however, consumes a large amount of energy and gives off carbon dioxide. A newer method has since surfaced: using a microorganism's metabolism to drive hydrogen production. In this study, the conditions for maximum hydrogen production in Heliobacterium modesticaldum were identified and assessed. The cells were grown under varying conditions and their headspaces were sampled using a gas chromatogram to measure the amount of accumulated hydrogen during each condition. Two cell batches were grown under nitrogen-fixing conditions (-NH4+), while the other two cell batches were grown under non-nitrogen-fixing conditions (+NH4+). The headspaces were then exchanged with either nitrogen (N2) or argon (Ar2). It was found that the condition for which the most hydrogen was produced was when the cells were grown under nitrogen-fixing conditions and the headspace was exchanged with argon. These results suggest that most of Heliobacteria modesticaldum's hydrogen production is due to nitrogenase activity rather than hydrogenase activity. Further research is recommended to quantify the roles of nitrogenase, [NiFe] hydrogenase, and [FeFe] hydrogenase.
ContributorsMcmahon, Savanah Dior (Author) / Redding, Kevin (Thesis director) / Ghirlanda, Giovanna (Committee member) / Barrett, The Honors College (Contributor) / Department of Chemistry and Biochemistry (Contributor) / School of Music (Contributor)
Created2015-05
Description
The Latino population is the fastest growing minority group in the United States (U.S Census Bureau, 2003). Such a rapidly changing demographic stresses the importance of implementing strategies into the community social framework to accommodate for cultural and language differences. This research paper seeks to answer: what factors influence the sense of community among Latino families in Phoenix? The following questions will help to assess the dynamic relationship between sense of community and literacy 1) what is the perceived importance of literacy among Latino families living in Phoenix? 2) How is language development reflected among the family dynamics within a predominantly collectivist culture? It is hypothesized that both collectivism and literacy are the main influences on sense of community among this population.
ContributorsBennett, Julie (Author) / Glenberg, Arthur (Thesis director) / Restrepo, Laida (Committee member) / Barrett, The Honors College (Contributor) / School of Politics and Global Studies (Contributor) / School of International Letters and Cultures (Contributor)
Created2015-05
Description
E-Strings Academy (www.estringsacademy.wordpress.com) is a resource website intended for the beginning violinist, violist, cellist, and bassist. The mission of the website is to extend musical learning opportunities to students outside of the physical string classroom and to engage first-year string students in musical activities at home that supplement the instruction they receive in a school setting. The current website features five different areas for students to explore: lesson videos, tunes, listening activities, games, and resources. In each area, students have the opportunity to learn and reinforce musical concepts and skill sets that they will need in order to be successful in music, both in their first year of playing and beyond. I created E-Strings Academy with the intention that I use it with my own string students in my future teaching career. It is a flexible website that I will continue to revise, adapt, and enhance to best serve the needs of my students and enrich their musical learning outside of the classroom.
ContributorsCook, Christa Marie (Author) / Schmidt, Margaret (Thesis director) / Tobias, Evan (Committee member) / Barrett, The Honors College (Contributor) / School of Music (Contributor)
Created2015-05