Friday, February 26th, 2016

Carl Milofsky – Green, Brandn; Jones, Kristal; Boyd, Neil; Milofsky, Carl; and Martin, Eric C. “Students Implement the Affordable Care Act: A Model for Undergraduate Teaching and Research in Community Health and Sociology.” Journal of Community Health 40, no. 3 (2015) : 605-611.

Carl Milofsky, Professor of Sociology

The implementation of the Affordable Care Act (ACA) provides an opportunity for undergraduate students to observe and experience first-hand changing social policies and their impacts for individuals and communities. This article overviews an action research and teaching project developed at an undergraduate liberal arts university and focused on providing ACA enrollment assistance as a way to support student engagement with community health. The project was oriented around education, enrollment and evaluation activities in the community, and students and faculty together reflected on and analyzed the experiences that came from the research and outreach project. Student learning centered around applying concepts of diversity and political agency to health policy and community health systems. Students reported and faculty observed an unexpected empowerment for students who were able to use their university-learned critical thinking skills to explain complex systems to a wide range of audiences. In addition, because the project was centered at a university with no health professions programs, the project provided students interested in community and public health with the opportunity to reflect on how health and access to health care is conditioned by social context. The structure and pedagogical approaches and implications of the action research and teaching project is presented here as a case study for how to engage undergraduates in questions of community and public health through the lens of health policy and community engagement.

Green, Brandn; Jones, Kristal; Boyd, Neil; Milofsky, Carl; and Martin, Eric C. “Students Implement the Affordable Care Act: A Model for Undergraduate Teaching and Research in Community Health and Sociology.” Journal of Community Health 40, no. 3 (2015) : 605-611.

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Friday, February 26th, 2016

Kevin P. Myers – Brunstrom, Jeffrey M.; Rogers, Peter J.; Myers, Kevin P.; and Holtzman, Jon D. “In Search of Flavour-Nutrient Learning: A Study of the Samburu Pastoralists of North-Central Kenya.” Appetite 91, (2015) : 415-425.

Kevin P. Myers, Associate Professor of Psychology

Much of our dietary behaviour is learned. In particular, one suggestion is that ‘flavour-nutrient learning’ (F-NL) influences both choice and intake of food. F-NL occurs when an association forms between the orosensory properties of a food and its postingestive effects. Unfortunately, this process has been difficult to evaluate because F-NL is rarely observed in controlled studies of adult humans. One possibility is that we are disposed to F-NL. However, learning is compromised by exposure to a complex Western diet that includes a wide range of energy-dense foods. To test this idea we explored evidence for F-NL in a sample of semi-nomadic pastoralists who eat a very limited diet, and who are lean and food stressed. Our Samburu participants (N = 68) consumed a sensory-matched portion (400 g) of either a novel low (0.72 kcal/g) or higher (1.57 kcal/g) energy-dense semi-solid food on two training days, and an intermediate version on day 3. Before and after each meal we measured appetite and assessed expected satiation and liking for the test food. We found no evidence of F-NL. Nevertheless, self-reported measures were very consistent and, as anticipated, expected satiation increased as the test food became familiar (expectedsatiation drift). Surprisingly,we observed insensitivity to the effects of test-meal energy density on measures of post-meal appetite. To explore this further we repeated a single training day using participants (N = 52) from the UK. Unlike in the Samburu, the higher energy-dense meal caused greater suppression of appetite. These observations expose interesting cross-cultural differences in sensitivity to the energy content of food. More generally, our work illustrates how measures can be translated to assess different populations, highlighting the potential for further comparisons of this kind.

Brunstrom, Jeffrey M.; Rogers, Peter J.; Myers, Kevin P.; and Holtzman, Jon D. “In Search of Flavour-Nutrient Learning: A Study of the Samburu Pastoralists of North-Central Kenya.” Appetite 91, (2015) : 415-425.

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Friday, February 26th, 2016

Carl Milofsky – Marsh, Ben; Milofsky, Carl; Kissam, Edward; and Arcury, Thomas A. “Understanding the Role of Social Factors in Farmworker Housing and Health.” New Solutions : a Journal of Environmental and Occupational Health Policy 25, no. 3 (2015) : 313-333.

Carl Milofsky, Professor of Sociology

Differences in social advantage significantly influence health conditions and life expectancy within any population. Such factors reproduce historic class, race, and ethnic disparities in community success. Few populations in the United States face more social and economic disadvantage than farmworkers, and farmworker housing has significant potential to ameliorate or amplify the health impact of those disadvantages. Drawing on the limited direct research on farmworkers, and on additional research about poor, isolated, and immigrant societies, we propose four mechanisms through which housing can be expected to affect farmworker health: quality of social capital within farmworker communities, stress effects of poor housing situations, effects of housing on social support for healthy behaviors, and interactions among these factors, especially effects on children that can last for generations. Policy and planning definitions of “adequate” farmworker housing should take a more holistic view of housing needs to support specific social and community benefits in design decisions.

The Author(s) 2015.

Marsh, Ben; Milofsky, Carl; Kissam, Edward; and Arcury, Thomas A. “Understanding the Role of Social Factors in Farmworker Housing and Health.” New Solutions : a Journal of Environmental and Occupational Health Policy 25, no. 3 (2015) : 313-333.

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Friday, February 26th, 2016

Jennie Stevenson – Stevenson, Jennie; Francomacaro, Lisa; Bohidar, Amelia; Young, K. A.; Pesarchick, B. F.; Buirkle, J. M.; McMahon, Elyse; and O’Bryan, C. M. “Ghrelin Receptor (GHS-R1A) Antagonism Alters Preference for Ethanol and Sucrose in a Concentration-Dependent Manner in Prairie Voles.” Physiology & Behavior 155, (2016) : 231-236.

Jennie Stevenson, Assistant Professor of Psychology

Ghrelin receptor (GHS-R1A) activity has been implicated in reward for preferred foods and drugs; however, a recent study in our laboratory indicated that GHS-R1A antagonism reduces early (after only four exposures) preference for 20% ethanol, but not 10% sucrose in prairie voles, a genetically diverse high alcohol-consuming species. The purpose of the present study was to determine if these effects of GHS-R1A antagonism depend on the concentration of the rewarding solution being consumed. We first characterized preference for varying concentrations of ethanol and sucrose. Two bottle tests of each ethanol concentration versus water indicated that 10% and 20% ethanol are less preferred than 3% ethanol, and a follow-up direct comparison of 10% vs. 20% showed that 10% was preferred over 20%. Direct two-bottle comparisons of 2% vs. 5%, 2% vs. 10%, and 5% vs. 10% sucrose showed that 10% sucrose was most preferred, and 2% sucrose was least preferred. The effects of JMV 2959, a GHS-R1A antagonist, on preference for each concentration of ethanol and sucrose were then tested. In a between groups design prairie voles were given four two-hour drinking sessions in which animals had access to ethanol (3, 10, or 20%) versus water, or sucrose (2, 5, or 10%) versus water every other day. Saline habituation injections were given 30min before the third drinking session. JMV 2959 (i.p.; 9mg/kg), a GHS-R1A antagonist, or saline was administered 30min before the fourth drinking session. JMV 2959 reduced preference for 20% ethanol and 2% sucrose, but had no significant effect on preference for the other ethanol and sucrose concentrations. These data identify constraints on the role of GHS-R1A in early preference for ethanol and sucrose, and the concentration-dependent effects suggest strong preference for a reward may limit the importance of GHS-R1A activity.Copyright 2015 Elsevier Inc. All rights reserved.

Stevenson, Jennie; Francomacaro, Lisa; Bohidar, Amelia; Young, K. A.; Pesarchick, B. F.; Buirkle, J. M.; McMahon, Elyse; and O’Bryan, C. M. “Ghrelin Receptor (GHS-R1A) Antagonism Alters Preference for Ethanol and Sucrose in a Concentration-Dependent Manner in Prairie Voles.” Physiology & Behavior 155, (2016) : 231-236.

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Friday, February 26th, 2016

Alexander Riley – Riley, Alexander. “Ethnography of the Ek-Static Experience: Poesie Auto-Socioanalytique in the Work of Michel Leiris.” Journal of Contemporary Ethnography 44, no. 3 (2015) : 362-386.

Alexander Riley, Professor of Sociology

Much work has been done in recent decades to emphasize the need in ethnographic writing to grapple with questions of authorship, perspective, aesthetics, emotional resonance, and style. Various forms of reflexive ethnographic writing, and especially autoethnography, have opened up new expressive avenues. In this article, I argue that a figure who is at present poorly known in English-language social scientific circles, the French ethnographer, poet, and writer Michel Leiris (1901-1990), pushes this kind of autobiographical ethnographic writing forward in powerful ways. In brief, Leiris offers a powerfully effective method (which I call poesie auto-socioanalytique) that ties subjective experience into a larger objective structural framework via a method that (1) focuses on cultural meaning in an autobiographical experiential framework, that is, from the inside, (2) is expressly concerned with the role that language itself plays in meaning and memory, and (3) examines extraordinary situations in which one stands, temporarily, outside the normal interactional world in an existential frame of peculiar intensity and effervescence (the ek-static), and uses the Durkheimian conception of the sacred-profane opposition, along with the binary differentiation of the sacred into pure and impure varieties, as a structural theoretical tool for these descriptions. He makes an important contribution to ongoing discussions in the disciplines of cultural anthropology and cultural sociology concerning the interpretation and description of cultural meaning.

Riley, Alexander. “Ethnography of the Ek-Static Experience: Poesie Auto-Socioanalytique in the Work of Michel Leiris.” Journal of Contemporary Ethnography 44, no. 3 (2015) : 362-386.

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Friday, February 26th, 2016

Andrea Halpern – Jakubowski, Kelly; Halpern, Andrea; Grierson, Mick; and Stewart, Lauren. “The Effect of Exercise-Induced Arousal on Chosen Tempi for Familiar Melodies.” Psychonomic Bulletin & Review 22, no. 2 (2015) : 559-565.

Andrea Halpern, Professor of Psychology

Many previous studies have shown that arousal affects time perception, suggesting a direct influence of arousal on the speed of the pacemaker of the internal clock. However, it is unknown whether arousal influences the mental representation of tempo (speed) for highly familiar and complex stimuli, such as well-known melodies, that have long-term representations in memory. Previous research suggests that mental representations of the tempo of familiar melodies are stable over time; the aim of the present study was to investigate whether these representations can be systematically altered via an increase in physiological arousal. Participants adjusted the tempo of 14 familiar melodies in real time until they found a tempo that matched their internal representation of the appropriate tempo for that piece. The task was carried out before and after a physiologically arousing (exercise) or nonarousing (anagrams) manipulation. Participants completed this task both while hearing the melodies aloud and while imagining them. Chosen tempi increased significantly following exercise-induced arousal, regardless of whether a melody was heard aloud or imagined. These findings suggest that a change in internal clock speed affects temporal judgments even for highly familiar and complex stimuli such as music.

Jakubowski, Kelly; Halpern, Andrea; Grierson, Mick; and Stewart, Lauren. “The Effect of Exercise-Induced Arousal on Chosen Tempi for Familiar Melodies.” Psychonomic Bulletin & Review 22, no. 2 (2015) : 559-565.

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Friday, February 26th, 2016

Jennie Stevenson – Stevenson, Jennie; Buirkle, J M.; Buckley, L E.; Young, Katelyn; Albertini, K M.; and Bohidar, Amelia. “GHS-R1A Antagonism Reduces Alcohol but Not Sucrose Preference in Prairie Voles.” Physiology & Behavior 147, (2015) : 23-29.

Jennie Stevenson, Assistant Professor of Psychology

Rationale: Ghrelin has been shown to mediate food and drug reward in rats and mice, and the rewarding properties of sweet foods and alcohol are known to contribute to overconsumption of these substances. Objective: To investigate the effects of GHS-R1A antagonism in a novel animal model of high alcohol consumption, the prairie vole, and to characterize the role of ghrelin in limited access consumption of a drug (alcohol) and non-drug (sucrose) reward. Methods: Female prairie voles were given four 2-h two-bottle drinking sessions, occurring every other day. During drinking sessions, animals had access to 20% ethanol vs water or 10% sucrose vs water. Pre-treatment with the GHS-R1A antagonist JMV 2959 (i.p.; 0.0, 9.0 mg/kg Experiments 1 and 2;0.0, 9.0, 12.0 mg/kg Experiments 3 and 4.) occurred 30-min before the fourth session. To determine if the amount of exposure to sucrose sessions affected the efficacy of JMV 2959, in Experiment 5 animals were given 16 daily 2-hr drinking sessions with 10% sucrose vs water. JMV 2959 treatment (0.0 or 9.0 mg/kg) occurred 30-min prior to the 16th session. Results: JMV 2959 reduced alcohol but not sucrose preference. Even after extended experience with sucrose sessions, JMV 2959 had no effect on sucrose preference or consumption. Conclusion: These findings demonstrate that GHS-R1A antagonism reduces alcohol preference, but suggest limitations on the role of ghrelin in the preference for and consumption of naturally rewarding substances. (C) 2015 Elsevier Inc. All rights reserved.

Stevenson, Jennie; Buirkle, J M.; Buckley, L E.; Young, Katelyn; Albertini, K M.; and Bohidar, Amelia. “GHS-R1A Antagonism Reduces Alcohol but Not Sucrose Preference in Prairie Voles.” Physiology & Behavior 147, (2015) : 23-29.

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Friday, February 26th, 2016

Jennifer Silva – Snellman, Kaisa; Silva, Jennifer; Frederick, Carl B.; and Putnam, Robert D. “The Engagement Gap: Social Mobility and Extracurricular Participation among American Youth.” Annals of the American Academy of Political and Social Science 657, no. 1 (2015) : 194-207.

Jennifer Silva, Assistant Professor of Sociology & Anthropology

Participation in extracurricular activities is associated with positive youth outcomes such as higher education attainment and greater future earnings. We present new analyses of four national longitudinal surveys of American high school students that reveal a sharp increase in the class gap in extracurricular involvement. Since the 1970s, upper-middle-class students have become increasingly active in school clubs and sport teams, while participation among working-class students has veered in the opposite direction. These growing gaps have emerged in the wake of rising income inequality, the introduction of pay to play programs, and increasing time and money investments by upper-middle-class parents in children’s development. These trends need to be taken into account in any new initiative to monitor mobility. They also present a challenge to the American ideal of equal opportunity insofar as participation in organized activities shapes patterns of social mobility.

Snellman, Kaisa; Silva, Jennifer; Frederick, Carl B.; and Putnam, Robert D. “The Engagement Gap: Social Mobility and Extracurricular Participation among American Youth.” Annals of the American Academy of Political and Social Science 657, no. 1 (2015) : 194-207.

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Friday, February 26th, 2016

Andrea Halpern – Jakubowski, Kelly; Farrugia, Nicolas; Halpern, Andrea; Sankarpandi, Sathish K.; and Stewart, Lauren. “The Speed of Our Mental Soundtracks: Tracking the Tempo of Involuntary Musical Imagery in Everyday Life.” Memory & Cognition 43, no. 8 (2015) : 1229-1242.

Andrea Halpern, Professor of Psychology

The study of spontaneous and everyday cognitions is an area of rapidly growing interest. One of the most ubiquitous forms of spontaneous cognition is involuntary musical imagery (INMI), the involuntarily retrieved and repetitive mental replay of music. The present study introduced a novel method for capturing temporal features of INMI within a naturalistic setting. This method allowed for the investigation of two questions of interest to INMI researchers in a more objective way than previously possible, concerning (1) the precision of memory representations within INMI and (2) the interactions between INMI and concurrent affective state. Over the course of 4 days, INMI tempo was measured by asking participants to tap to the beat of their INMI with a wrist-worn accelerometer. Participants documented additional details regarding their INMI in a diary. Overall, the tempo of music within INMI was recalled from long-term memory in a highly veridical form, although with a regression to the mean for recalled tempo that parallels previous findings on voluntary musical imagery. A significant positive relationship was found between INMI tempo and subjective arousal, suggesting that INMI interacts with concurrent mood in a similar manner to perceived music. The results suggest several parallels between INMI and voluntary imagery, music perceptual processes, and other types of involuntary memories.

Jakubowski, Kelly; Farrugia, Nicolas; Halpern, Andrea; Sankarpandi, Sathish K.; and Stewart, Lauren. “The Speed of Our Mental Soundtracks: Tracking the Tempo of Involuntary Musical Imagery in Everyday Life.” Memory & Cognition 43, no. 8 (2015) : 1229-1242.

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Friday, February 26th, 2016

Jiajia Dong – Sahoo, Mamata; Dong, Jiajia; and Klumpp, Stefan. “Dynamic Blockage in an Exclusion Process.”Journal of Physics A–Mathematical and Theoretical 48, no. 1 (2015) : 015007.

Jiajia Dong, Associate Professor of Physics & Astronomy

We study an asymmetric exclusion model with one dynamic roadblock particle. The roadblock particle is allowed to move diffusively as well as by longrange jumps mimicking an unbinding/rebinding process. Using Monte Carlo simulations and analytical arguments, the two types of roadblock moves are considered both separately and in combination. Several interesting dynamic phenomena are observed. The long-range jumps of the roadblock lead to a current that depends on the number of particles in the system rather than on the particle density, and thus scales linearly with the system size (up to a critical size). This behavior can be explained by a collective motion of all particles following the roadblock. The diffusive roadblock movements on the other hand lead to a ratcheting motion with the active (driven) particles pushing the roadblock forward.

Sahoo, Mamata; Dong, Jiajia; and Klumpp, Stefan. “Dynamic Blockage in an Exclusion Process.”Journal of Physics A–Mathematical and Theoretical 48, no. 1 (2015) : 015007.

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Friday, February 26th, 2016

Michael James – James, Michael Rabinder. “Two Concepts of Constituency.” Journal of Politics 77, no. 2 (2015) : 381-393.

Michael James, Associate Professor of Political Science

In this essay, I challenge the conceptual and normative arguments of Andrew Rehfeld’s The Concept of Constituency. I argue that Rehfeld conflates two distinct concepts of constituency as a result of errors in his normative argument for random, permanent constituencies. In response, I carefully distinguish the two concepts of objective constituency (the grouping of citizens into geographic or other electoral rolls through parametric action) and subjective constituency (the formation of cohesive voting blocs to elect a representative through strategic and communicative action between constituents and candidates). Distinguishing between objective and subjective constituency allows me to identify the shortcomings in the normative analyses of democratic constituencies proffered by Lisa Disch and Thomas Pogge. I then propose the use of random, permanent constituencies, each of which elects five representatives through the single transferable vote. This facilitates the representation of racial and ethnic minorities, while encouraging constituency deliberation aimed at the national interest.

James, Michael Rabinder. “Two Concepts of Constituency.” Journal of Politics 77, no. 2 (2015) : 381-393.

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Friday, February 26th, 2016

Jiajia Dong – Dong, JiaJia. “Spatial Structures in a Simple Model of Population Dynamics for Parasite-Host Interactions.” Europhysics Letters 111, no. 4 (2015) : 48001.

Jiajia Dong, Associate Professor of Physics & Astronomy

Spatial patterning can be crucially important for understanding the behavior of interacting populations. Here we investigate a simple model of parasite and host populations in which parasites are random walkers that must come into contact with a host in order to reproduce. We focus on the spatial arrangement of parasites around a single host, and we derive using analytics and numerical simulations the necessary conditions placed on the parasite fecundity and lifetime for the population’s long-term survival. We also show that the parasite population can be pushed to extinction by a large drift velocity, but, counterintuitively, a small drift velocity generally increases the parasite population.

Dong, JiaJia. “Spatial Structures in a Simple Model of Population Dynamics for Parasite-Host Interactions.” Europhysics Letters 111, no. 4 (2015) : 48001.

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Friday, February 26th, 2016

Chris Boyatzis – Cook, Kaye V.; Kimball, Cynthia; Boyatzis, Chris; and Leonard, Kathleen C. “Religiousness and Spirituality Among Highly Religious Emerging Adults.” Journal of Psychology and Christianity 34, no. 3 (2015) : 252-265.

Chris Boyatzis, Professor of Psychology

Three mixed-methods studies assessed whether students at Christian colleges maintain a traditional faith over time. For a population of recent, two-year, and four-year alumni at two Christian colleges (Study 1), as well as first-year and senior undergraduate students at one of the two Christian colleges (Studies 2 and 3), we measured changes in denominational commitments, religious attitudes and behavior, and descriptions of changing points in faith. We analyzed the interview data (faith changing points) for instances of moralistic therapeutic deism (MTD), which Smith and his colleagues (Smith & Denton, 2005; Smith & Snell, 2009) have identified as characteristic of emerging adults’ religiousness. MTD is described as a watered-down faith in which God is understood as a personal helper who sets moral standards but places little demand on the believer. Our findings indicate that undergraduates and alumni from Christian college contexts maintain solid faith commitments that are not consistent with MTD. Instead they hold a robust, traditional faith marked by trust in God, ownership of their own faith, and an embrace of historically central religious constructs, consistent with the traditionalists (Smith & Snell, 2009) and conservative believers (Arnett, 2014). In their traditionalism, the undergraduates in Study 3 experience themselves as having greater concern for spirituality (or faith) than when they entered college, but no greater concern for religiousness (or institutional commitment), describing themselves as “more spiritual but less religious.”

Cook, Kaye V.; Kimball, Cynthia; Boyatzis, Chris; and Leonard, Kathleen C. “Religiousness and Spirituality Among Highly Religious Emerging Adults.” Journal of Psychology and Christianity 34, no. 3 (2015) : 252-265.

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Friday, February 26th, 2016

Jack F. Gallimore – Sales, Dinalva; Robinson, Andy; Axon, David J.; Gallimore, Jack F.; Kharb, Preeti; Curran, Rachel L.; O’Dea, Christopher P.; Baum, Stefi A.; Elitzur, Moshe; and Mittal, Rupal. “An Embedded Active Nucleus in the OH Megamaser Galaxy IRAS16399-0937.” The Astrophysical Journal 799, (2015) : 25.

Jack F. Gallimore, Associate Professor of Physics

We present a multiwavelength study of the OH megamaser galaxy IRAS16399-0937, based on new Hubble Space Telescope (HST)/Advanced Camera for Surveys F814W and Hα+[N II] images and archive data from HST, Two Micron All Sky Survey, Spitzer, Herschel and the Very Large Array. This system has a double nucleus, whose northern (IRAS16399N) and southern (IRAS16399S) components have a projected separation of ~6” (3.4 kpc) and have previously been identified based on optical spectra as a low ionization nuclear emission line region (LINER) and starburst nucleus, respectively. The nuclei are embedded in a tidally distorted common envelope, in which star formation is mostly heavily obscured. The infrared spectrum is dominated by strong polycyclic aromatic hydrocarbon, but deep silicate and molecular absorption features are also present, and are strongest in the IRAS16399N nucleus. The 0.435-500 μm spectral energy distribution was fitted with a model including stellar, interstellar medium and active galactic nucleus (AGN) torus components using our new Markov Chain Monte Carlo code, CLUMPYDREAM. The results indicate that the IRAS16399N contains an AGN (L bol ~ 1044 erg s-1) deeply embedded in a quasi-spherical distribution of optically thick clumps with a covering fraction ≈1. We suggest that these clumps are the source of the OHM emission in IRAS16399-0937. The high torus covering fraction precludes AGN photoionization as the origin of the LINER spectrum, however, the spectrum is consistent with shocks (v ~ 100-200 km s-1). We infer that the ~108 M black hole in IRAS16399N is accreting at a small fraction (~1%) of its Eddington rate. The low accretion rate and modest nuclear star formation rates suggest that while the gas-rich major merger forming the IRAS16399-0937 system has triggered widespread star formation, the massive gas inflows expected from merger simulations have not yet fully developed.

Sales, Dinalva; Robinson, Andy; Axon, David J.; Gallimore, Jack F.; Kharb, Preeti; Curran, Rachel L.; O’Dea, Christopher P.; Baum, Stefi A.; Elitzur, Moshe; and Mittal, Rupal. “An Embedded Active Nucleus in the OH Megamaser Galaxy IRAS16399-0937.” The Astrophysical Journal 799, (2015) : 25.

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Friday, February 26th, 2016

David Evans – Evans, David W.; Lazar, Steven M.; Boomer, K B.; Mitchel, Aaron; Michael, Andrew M.; and Moore, Gregory J. “Social Cognition and Brain Morphology: Implications for Developmental Brain Dysfunction.” Brain Imaging and Behavior 9, no. 2 (2015) : 264-274.

Chris Boyatzis, Professor of Psychology

The social-cognitive deficits associated with several neurodevelopmental and neuropsychiatric disorders have been linked to structural and functional brain anomalies. Given the recent appreciation for quantitative approaches to behavior, in this study we examined the brain-behavior links in social cognition in healthy young adults from a quantitative approach. Twenty-two participants were administered quantitative measures of social cognition, including the social responsiveness scale (SRS), the empathizing questionnaire (EQ) and the systemizing questionnaire (SQ). Participants underwent a structural, 3-T magnetic resonance imaging (MRI) procedure that yielded both volumetric (voxel count) and asymmetry indices. Model fitting with backward elimination revealed that a combination of cortical, limbic and striatal regions accounted for significant variance in social behavior and cognitive styles that are typically associated with neurodevelopmental and neuropsychiatric disorders. Specifically, as caudate and amygdala volumes deviate from the typical R > L asymmetry, and cortical gray matter becomes more R > L asymmetrical, overall SRS and Emotion Recognition scores increase. Social Avoidance was explained by a combination of cortical gray matter, pallidum (rightward asymmetry) and caudate (deviation from rightward asymmetry). Rightward asymmetry of the pallidum was the sole predictor of Interpersonal Relationships and Repetitive Mannerisms. Increased D-scores on the EQ-SQ, an indication of greater systemizing relative to empathizing, was also explained by deviation from the typical R > L asymmetry of the caudate.

Evans, David W.; Lazar, Steven M.; Boomer, K B.; Mitchel, Aaron; Michael, Andrew M.; and Moore, Gregory J. “Social Cognition and Brain Morphology: Implications for Developmental Brain Dysfunction.” Brain Imaging and Behavior 9, no. 2 (2015) : 264-274.

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Friday, February 26th, 2016

Thomas H. Solomon – Gowen, Savannah and Solomon, Thomas H. “Experimental Studies of Coherent Structures in an Advection-Reaction-Diffusion System.” Chaos (Woodbury, N.Y.) 25, no. 8 (2015) : 087403.

Thomas H. Solomon, Professor of Physics

We present experimental studies of reaction front propagation in a single vortex flow with an imposed external wind. The fronts are produced by the excitable, ferroin-catalyzed Belousov-Zhabotinsky chemical reaction. The flow is generated using an electromagnetic forcing technique: an almost-radial electrical current interacts with a magnetic field from a magnet below the fluid layer to produce the vortex. The magnet is mounted on crossed translation stages allowing for movement of the vortex through the flow. Reaction fronts triggered in or in front of the moving vortex form persistent structures that are seen experimentally for time-independent (constant motion), time-periodic, and time-aperiodic flows. These results are examined with the use of burning invariant manifolds that act as one-way barriers to front motion in the flows. We also explore the usefulness of finite-time Lyapunov exponent fields as an instrument for analyzing front propagation behavior in a fluid flow.

Gowen, Savannah and Solomon, Thomas H. “Experimental Studies of Coherent Structures in an Advection-Reaction-Diffusion System.” Chaos (Woodbury, N.Y.) 25, no. 8 (2015) : 087403.

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Friday, February 26th, 2016

William F. Flack, Jr. – Flack, William F. Jr.; Kimble, Matthew O.; Campbell, Brooke E.; Hopper, Allyson B.; Peterca, Oana; and Heller, Emily J. “Sexual Assault Victimization Among Female Undergraduates During Study Abroad: A Single Campus Survey Study.” Journal of Interpersonal Violence 30, no. 20 (2015) : 3453-3466.

William F. Flack, Jr., Associate Professor of Psychology

Almost all research on sexual assault victimization among undergraduate university students pertains to incidents that occur on domestic college and university campuses. The purpose of the present study was to investigate the prevalence of sexual assault victimization and related factors among undergraduates in the context of study-abroad programs. Two hundred eight female students (52% response rate) from a small university in the northeastern United States who had recently studied abroad responded to an online survey containing measures of sexual assault, posttraumatic stress responses (PSR), and alcohol consumption. Almost 19% of the respondents indicated one or more types of sexual assault victimization. Approximately 17% reported non-consensual sexual touching, 7% attempted rape, 4% rape, with 9% reporting attempted rape or rape. As in domestic studies, victimization in this sample was related positively to alcohol consumption and PSR. Use of force was the most frequently reported perpetrator tactic. In sum, the high rates of sexual assault victimization reported by this sample during study abroad replicate previous findings. This context requires further attention from sexual assault researchers, especially given the increasing numbers of university students engaging in study abroad, and from campus support personnel who may be unaware of the likelihood of assault in this context.

The Author(s) 2014.

Flack, William F. Jr.; Kimble, Matthew O.; Campbell, Brooke E.; Hopper, Allyson B.; Peterca, Oana; and Heller, Emily J. “Sexual Assault Victimization Among Female Undergraduates During Study Abroad: A Single Campus Survey Study.” Journal of Interpersonal Violence 30, no. 20 (2015) : 3453-3466.

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Friday, February 26th, 2016

Thomas H. Solomon – Mahoney, John R.; Li, John; Boyer, Carleen; and Solomon, Thomas H. “Frozen Reaction Fronts in Steady Flows: A Burning-Invariant-Manifold Perspective.” Physical Review E 92, no. 6 (2015) : 063005.

Thomas H. Solomon, Professor of Physics

The dynamics of fronts, such as chemical reaction fronts, propagating in two-dimensional fluid flows can be remarkably rich and varied. For time-invariant flows, the front dynamics may simplify, settling in to a steady state in which the reacted domain is static, and the front appears “frozen.” Our central result is that these frozen fronts in the two-dimensional fluid are composed of segments of burning invariant manifolds, invariant manifolds of front-element dynamics in xy theta space, where theta is the front orientation. Burning invariant manifolds (BIMs) have been identified previously as important local barriers to front propagation in fluid flows. The relevance of BIMs for frozen fronts rests in their ability, under appropriate conditions, to form global barriers, separating reacted domains from nonreacted domains for all time. The second main result of this paper is an understanding of bifurcations that lead from a nonfrozen state to a frozen state, as well as bifurcations that change the topological structure of the frozen front. Although the primary results of this study apply to general fluid flows, our analysis focuses on a chain of vortices in a channel flow with an imposed wind. For this system, we present both experimental and numerical studies that support the theoretical analysis developed here.

Mahoney, John R.; Li, John; Boyer, Carleen; and Solomon, Thomas H. “Frozen Reaction Fronts in Steady Flows: A Burning-Invariant-Manifold Perspective.” Physical Review E 92, no. 6 (2015) : 063005.

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Friday, February 26th, 2016

Andrea Halpern – Pfordresher, Peter Q.; Halpern, Andrea; and Greenspon, Emma B. “A Mechanism for Sensorimotor Translation in Singing: the Multi-Modal Imagery Association (MMIA) Model.” Music Perception 32, no. 3 (2015) : 242-253.

Andrea Halpern, Professor of Psychology

WE PROPOSE A NEW FRAMEWORK TO UNDERSTAND singing accuracy, based on multi-modal imagery associations: the MMIA model. This model is based on recent data suggesting a link between auditory imagery and singing accuracy, evidence for a link between imagery and the functioning of internal models for sensorimotor associations, and the use of imagery in singing pedagogy. By this account, imagery involves automatic associations between different modalities, which in the present context comprise associations between pitch height and the regulation of vocal fold tension. Importantly, these associations are based on probabilistic relationships that may vary with respect to their precision and accuracy. We further describe how this framework may be extended to multi-modal associations at the sequential level, and how these associations develop. The model we propose here constitutes one part of a larger architecture responsible for singing, but at the same time is cast at a general level that can extend to multi-modal associations outside the domain of singing.

Pfordresher, Peter Q.; Halpern, Andrea; and Greenspon, Emma B. “A Mechanism for Sensorimotor Translation in Singing: the Multi-Modal Imagery Association (MMIA) Model.” Music Perception 32, no. 3 (2015) : 242-253.

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Friday, February 26th, 2016

Karen M. Morin – Morin, Karen M. “Carceral Space: Prisoners and Animals.” Antipode: A Radical Journal of Geography (2016).

Karen M. Morin, Associate Provost

This paper develops a framework for exploring resonances across human and nonhuman carceral geographies. I illustrate the close linkages across prisoner and animal carcerality and captivity focusing on three types of sites and institutions: the prison execution chamber and the animal slaughterhouse; sites of medical (and other) laboratory testing of pharmaceutical and other products on incarcerated humans and captive animals; and sites and institutions of exploited prisoner and animal labor. The main themes that call for a ‘carceral comparison’ among these sites include the emotional and psychological strain and violence enacted on bodies that is interwoven into their day-to-day operations; their geographies (locations, design and layout) and the carefully choreographed and regulated movements within them that speak to regimes of surveillance, power, and control; and the ethical questions that arise when we consider the potential for these sites to become locations of genocide and extinction of particular populations.

Morin, Karen M. “Carceral Space: Prisoners and Animals.” Antipode: A Radical Journal of Geography (2016).

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