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A behavioral economic demand analysis of media multitasking in the college classroom: A cluster analysis
Get PDFMedia multitasking has brought concerns (e.g., lower productivity and performance) in multiple settings including college classrooms. The present study examined the behavior of texting in the classroom (TIC) by applying the behavioral economic demand theory while taking college students’ different attitudes and behaviors of TIC into consideration. Undergraduate students (109 females and 73 males for valid data, whose average age was 19.4 [SD = 2.5]) completed questionnaires on demographic characteristics, TIC-related attitude and behavior, and a demand task with a hypothetical scenario, which aimed to quantify the value of social rewards from text messaging with demand intensity (i.e., excessiveness) and elasticity (i.e., persistence). A cluster analysis identified four distinct subgroups who had varying levels of attitude (i.e., perceiving TIC as appropriate or inappropriate) and frequency of TIC: Inappropriate-Low-Frequency, Inappropriate-High-Frequency, Appropriate-Moderate-Frequency, and Appropriate-High-Frequency subgroups. The subsequent analysis revealed that demand intensity and elasticity of the Inappropriate-Low-Frequency subgroup were significantly lower and higher, respectively, than those of the Inappropriate-High-Frequency and Appropriate-High-Frequency subgroups. In addition, in supplemental analyses of multiple regression, demand intensity, but not elasticity, significantly predicted frequencies of TIC. Considering these findings, excessive valuation of social rewards from text messaging, particularly characterized by its demand intensity, appears to play an important role in the frequency of TIC. The present study contributes to the literature on media multitasking by suggesting excessive valuation as a potential factor related to TIC and providing practical implications that can help explore effective interventions tailored for distinct types of college students who have varying TIC-related attitudes and behaviors
Introduction: Pandemic and the Global South
Get PDFIn lieu of abstract: Critical Humanities is a child of the coronavirus pandemic. As paradoxical as it may sound, the journal was born of our desire for community, conviviality, and survival in a world ravaged by disease, despair and death
The Book of Delights by Ross Gay
Get PDFThe Book of Delights by Ross Gay is a collection of journal entries written in a single year. The book starts with the author’s birthday and ends full circle with his next birthday
Plant the Kinds of Seeds That Destroy Foundations: An Interview with Jasmine Sawers by CH Assistant Editor Nicole Lawrence
Get PDFJasmine Sawers is the author of The Anchored World (Rose Metal Press, 2022). Their work appears in such journals as Ploughshares, NANO Fiction, [PANK], SmokeLong Quarterly, Sycamore Review, and many more. Sawers won the Ploughshares Emerging Writers Contest and the NANO Prize
Examining the Effects of Exercise-Induced, Physical Stress Overtraining on Stress Biomarkers in Adolescent, C57BL/6 Mice
Get PDFExercise has long been established as a therapeutic modality to improve health and related physical fitness, sports performance, and injury/risk reduction in both adults and adolescents (Haff & Triplett, 2015; Kaminsky, 2010). Nonetheless, there is a lack of research investigating the negative effects of exercise overstress (i.e., overtraining syndrome) in these populations, particularly adolescents (Brenner & American Academy of Pediatrics Council on Sports Medicine and Fitness, 2007; Matos & Winsley, 2007). The objective of this study was to examine hormone biochemical markers, anthropometric markers, and behavioral traits, which are associated with overtraining syndrome, in adolescent C57BL/6 mice. A total of 24 mice were randomly assigned to three groups in this study (sedentary group, moderately-trained exercise group, and overtrained exercise group; n=8 mice per group) during an eight-week intervention. Primary assessments were conducted at baseline, mid, and post-intervention and included the hormones: corticosterone and IGF-1 as well as body composition measures using MRI. Behavioral measures included weekly food consumption using a digital scale, edge time and center time using open field apparatus and Any-maze software. Baseline values for hormone concentrations, anthropometrics (body composition) and behavior of each group were the same, respectively with the exception of precent lean mass which displayed a significant difference between Overtrained and Sedentary groups (p= 0.034059). Following the intervention, there was a significant difference in plasma corticosterone concentrations across time between Overtrained and Sedentary groups (p=0.0022) as well as Overtrained and Moderate Trained groups (p=0.0098). The Overtrained group displayed the highest levels of corticosterone concentrations in ng/ml (153.09 ± 99.92) among all groups post-study time point (8 weeks). IGF-1 results showed no significant differences among groups across time (p=0.9754); however, time was significant, and all groups decreased in IGF-1 levels across time (p=0.0168). Food consumption results showed significantly different group interactions (p\u3c0.0001) with the Overtrained group displaying the greatest amount of food consumed among all groups between weeks four-eight (132g-183g). In conclusion, the results of this study contribute to the literature regarding the exercise stress response in adolescent mice with physical overstress demonstrating greater negative responses to overtraining variables. Further research is necessary to better understand overtraining syndrome in adolescents, what biomarkers need assessed, and their implications to determine clinical relevance to physicians, coaches, parents and exercise specialists alike to recognize and reduce overtraining syndrome. \u3e\u3c0.0001) with the Overtrained group displaying the greatest amount of food consumed among all groups between weeks four-eight (132g-183g). In conclusion, the results of this study contribute to the literature regarding the exercise stress response in adolescent mice with physical overstress demonstrating greater negative responses to overtraining variables. Further research is necessary to better understand overtraining syndrome in adolescents, what biomarkers need assessed, and their implications to determine clinical relevance to physicians, coaches, parents and exercise specialists alike to recognize and reduce overtraining syndrome
Sections of the Generating Series of a Solution to a Difference Equation in a Simplicial Cone
No full textWe consider a multidimensional difference equation in a simplicial lattice cone with coefficients from a field of characteristic zero and sections of a generating series of a solution to the Cauchy problem for such equations. We use properties of the shift and projection operators on the integer lattice Z to find a recurrence relation (difference equation with polynomial coefficients) for the section of the generating series. This formula allows us to find a generating series of a solution to the Cauchy problem in the lattice cone through a generating series of its initial data and a right-side function of the difference equation. We derived an integral representation for sections of the holomorphic function, whose coefficients satisfy the difference equation with complex coefficients. Finally, we propose a system of differential equations for sections that represent D-finite functions of two complex variables