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Articles 38611 - 38640 of 713420

Full-Text Articles in Social and Behavioral Sciences

Implementing Path Of Zhengzhou University's Establishment Of Football Academy, Zhaoxin Ma, Ling Niu, Yongqiang Chang, Xinyue Kong Aug 2022

Implementing Path Of Zhengzhou University's Establishment Of Football Academy, Zhaoxin Ma, Ling Niu, Yongqiang Chang, Xinyue Kong

International Journal of Physical Activity and Health

Under the new policy background of the 2020 "Opinions on Deepening the Integration of Sports and Education and Promoting the Healthy Development of Adolescents", as the highest educational institution in China, higher education institutions should shoulder the responsibility of cultivating high-quality talents to meet social needs. As the highest-quality higher education institution in Henan Province, Zhengzhou University's innovation and exploration of teaching methods and talent training models under the background of the integration of sports and education will play a leading role in the development of higher education in Henan Province. Through combing and analyzing the existing policy documents, firstly, …


Implementing The Core Literacy Of Physical Education And Health Disciplines Through The Chinese Healthy Physical Education Curriculum Model, Shengting Dai, Le Wang, Jingfei Yan Aug 2022

Implementing The Core Literacy Of Physical Education And Health Disciplines Through The Chinese Healthy Physical Education Curriculum Model, Shengting Dai, Le Wang, Jingfei Yan

International Journal of Physical Activity and Health

Physical literacy, as embodied within physical education, has been vaunted as having increasing importance as a disposition for students of all abilities to establish lifelong adherence to physical activity. Physical education is a school curricular subject that supports the development of the skills, knowledge, and attitudes necessary for participating in active and healthy lifestyle. Physical literacy has become a hot topic in the field of physical education in schools in recent years. With the promulgation of "the Development of Core literacy of Chinese Students", the cultivation of Core literacy of Discipline becomes an important direction of deepening curriculum reform in …


The Influence Of Tai Chi Intervention On Inhibitory Function Of African College Students, Tongtong Guo, Jian Yang Aug 2022

The Influence Of Tai Chi Intervention On Inhibitory Function Of African College Students, Tongtong Guo, Jian Yang

International Journal of Physical Activity and Health

Inhibitory function is the core sub-function of executive function, which is mainly aimed at inhibiting the current dominant response in the cognitive process. It is embodied in the control of preventing the activation of irrelevant information, disturbing the irrelevant information, and the dominant reaction in the process. However, little research has examined the impact of Tai Chi on inhibitory function among native African students. The major purpose of this study was to conduct an experimental study on the inhibitory function of African college students through Tai Chi intervention, and to explore the non-Tai Chi local country students’ changes in the …


Research On The Problems And Optimization Paths Of Sports Event Governance In China, Bo Peng, Zhihua Yin Aug 2022

Research On The Problems And Optimization Paths Of Sports Event Governance In China, Bo Peng, Zhihua Yin

International Journal of Physical Activity and Health

The State Sports General Administration issued "Some opinions on promoting the reform of sports event approval system" on December 30, 2014, clearly canceling the right of approval of mass sports events. Based on this, the community has reflected well, and the quantity and quality of sports events have been significantly improved, but this change has also increased the difficulty of sports event governance. This paper aims to summarize the problems existing in the governance of sports events and the corresponding optimization paths and provides suggestions for the healthy development of sports event. The literature was searched using a keyword “sports …


Experimental Study On The Influence Of “Active Campus” Plan On Physical Fitness And Sports Interest, Xizhe Bai, Xiaozan Wang, Meiyuan Chen Aug 2022

Experimental Study On The Influence Of “Active Campus” Plan On Physical Fitness And Sports Interest, Xizhe Bai, Xiaozan Wang, Meiyuan Chen

International Journal of Physical Activity and Health

The exploration of “Activity Campus” action plan for elementary and middle schools in China has been gradually prevailed, but the impact of this plan on students has not been clarified. Based on this, this study is to explores the impact of the "Activity Campus" action plan on students' physical fitness and sport learning interest through research in “Activity Campus” plan, and provides theoretical support for implementation of the “Activity Campus” plan. 164 fourth-grade students from Shandong Province participate in this experiment, 80 in the experimental group and 84 in the control group. The Primary School Students’ Sports Learning Interest Scale …


The Role Of Confrontation Effectiveness For Women's Psychological Wellbeing After A Sexist Event, Shelby Helwig Aug 2022

The Role Of Confrontation Effectiveness For Women's Psychological Wellbeing After A Sexist Event, Shelby Helwig

Electronic Theses and Dissertations

This dissertation includes three experimental studies investigating how confronting sexism impacts college-aged women. In Studies 1 and 2, we investigated how confronting effectively versus ineffectively influenced women’s imagined (Study 1) and actual (Study 2) psychological wellbeing. In Study 3, we investigated how imagining the costs and benefits of confronting sexual harassment impacted women’s confrontational behavior and negative affect. All three studies supported the conclusion that an effective confrontation is a goal for most confronters (Study 3) and whether or not a confrontation is effective influences women’s imagined (Study 1) and actual (Study 2) psychological wellbeing. Beyond this, all three studies …


Video Chatting And Eating Disorder Psychopathology, Taylor Rae Perry Aug 2022

Video Chatting And Eating Disorder Psychopathology, Taylor Rae Perry

Legacy Theses & Dissertations (2009 - 2024)

Objective: Due to the COVID-19 pandemic video chatting has been widely used in work, education, and social gatherings. When individuals are video chatting, they can see themselves and see how their looks compare to others. Furthermore, video chatting platforms have features that may enhance an individual’s appearance. Thus, this study sought to investigate if (1) where one’s attention was focused during video chatting was uniquely associated with elevated eating disorder psychopathology and (2) if certain video chatting features were uniquely associated with elevated eating disorder psychopathology. Method: Participants were undergraduates (N=391, Mage=19.19, 58.2% female, and 48.8% White) who completed the …


Collaborative Practices Of Rural Inclusive Postsecondary Education Program (Ipse) Directors, Elizabeth Susanne Goode Dimond Aug 2022

Collaborative Practices Of Rural Inclusive Postsecondary Education Program (Ipse) Directors, Elizabeth Susanne Goode Dimond

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Inclusive postsecondary education programs (IPSE) for students with intellectual disabilities (ID) are relatively new, having their formal beginning in the Higher Education Opportunity Act (HEOA; P.L. 110-315) of 2008. These programs vary greatly and are found in urban, suburban, and rural areas of the United States. Those programs in rural areas face unique barriers and have unique strengths that affect how they collaborate and with whom they collaborate. The purpose of this qualitative phenomenological study is to describe the collaborative practices of rural IPSE program directors. This study gathered the lived experiences of rural IPSE program directors collaborating with agencies …


Reconstructing The Practical Theory Of Communication In Dating Matters: Examining Teen Dating Violence Prevention From A Communicative Approach, Diana Costanzo Aug 2022

Reconstructing The Practical Theory Of Communication In Dating Matters: Examining Teen Dating Violence Prevention From A Communicative Approach, Diana Costanzo

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Teen Dating Violence (TDV) has lasting impacts on teens’ health and well-being. Dating Matters: Strategies to Promote Healthy Teen Relationships (DM), a curriculum published by the CDC in 2019, seeks to mitigate the consequences of TDV and promote healthy relationships. Using Grounded Practical Theory (Craig & Tracy, 1995, 2014), this paper analyzes how DM conceptualizes communication. Specifically, I explore and critique how DM discusses topics related to communication and conflict. The findings of the analysis show that DM focuses on sending the right message in communication. In DM, parents and teens are encouraged to “talk it out” or “speak up” …


Cultural, Contextual, And Individual Determinants Of Mental Health Service Utilization Among Latinx Emerging Adults, Kenia Carrera Diaz Aug 2022

Cultural, Contextual, And Individual Determinants Of Mental Health Service Utilization Among Latinx Emerging Adults, Kenia Carrera Diaz

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Despite being at an increased risk of experiencing mental health problems, Latinx emerging adults underutilize professional psychological services compared to other ethnic/racial groups. It is important for researchers to understand this mental health disparity to improve Latinx emerging adults’ use of quality mental health services (MHS). The current project investigated factors that might influence Latinx emerging adult’s use of MHS through two separate studies. In the first study, I systematically reviewed research published in the past decade that examined predictors of MHS use among Latinx emerging adults. A total of 9 studies were found and included in this review. This …


Mind Broadening: Cognitive States And Traits Associated With Intrapersonal Creativity And Diverse Cultural Experiences, Jessica J. Stephens Aug 2022

Mind Broadening: Cognitive States And Traits Associated With Intrapersonal Creativity And Diverse Cultural Experiences, Jessica J. Stephens

Psychology Dissertations

An experience with a different culture (cross-cultural experience; CCE) can provide opportunities to think about new and unfamiliar concepts and to solve problems using cross-cultural knowledge and inspired thinking. This could be because a CCE disrupts rigid thinking and compels open, unique, and integrative thinking. To test this, three experiments were executed. Each tested the influence of a temporary mindset of deculturation, which describes thoughts related to suppressing one’s dominant culture while adapting to a new culture, on generative forms of creative thinking. Two of these experiments also evaluated the influence of the temporary mindset, acculturation, which describes thoughts of …


A Comparison Of Methods Used For The Elimination Of Organics From Soil Prior To Analysis By Ftir-Atr And Sem-Eds, Argeliz Pomales Aug 2022

A Comparison Of Methods Used For The Elimination Of Organics From Soil Prior To Analysis By Ftir-Atr And Sem-Eds, Argeliz Pomales

Student Theses

This project suggests improvements to the treatment methods utilized for the sample preparation and evaluation of minerals in soil samples encountered in forensic science casework and research. The evaluation of pre-treated and post-treated soil samples were performed using Fourier-Transform Infrared Spectroscopy with Attenuated Total Reflection (FTIR-ATR) and Scanning Electron Microscopy-Energy Dispersive Spectroscopy (SEM-EDS). Because soil samples contain a significant amount of organic matter and water which interfere with examination of these minerals while using these instruments, pretreatment methods are necessary to isolate the mineral fraction for examination and analysis.

Soil samples were first sieved with various size stainless steel mesh …


Crime Scene Behaviors Of Sexual Murderers With And Without A Criminal History Of Sexual Assault, Tirza Z. Ben Ari Aug 2022

Crime Scene Behaviors Of Sexual Murderers With And Without A Criminal History Of Sexual Assault, Tirza Z. Ben Ari

Student Theses

This exploratory study is intended to serve as a gateway to future research about the differences between sexual murderers with (HSAO) and without (N-HSAO) a recorded criminal history of sexual assault, on which there is little to no comparative literature. This study aims to extend our understanding of these groups by comparing their crime scene (and crime-related) behaviors and exploring their underlying psychological functioning. The results suggest that N-HSAO have a significantly higher tendency to murder friends or strangers, initially attack or abduct their victims from the victim’s residence, use more than one killing method in the murder, attack their …


The Political Economy Of Factionalism In Reform-Era China: Informal Institutions And The Regional Distribution Of Non-Public Investment, Jingnan Mr Liu Aug 2022

The Political Economy Of Factionalism In Reform-Era China: Informal Institutions And The Regional Distribution Of Non-Public Investment, Jingnan Mr Liu

Theses and Dissertations

This dissertation discusses the effects of the Chinese Communist Party’s (CCP) formal personnel management and informal politics on Chinese reform and development. It argues that the CCP’s informal politics can help to improve China’s economic reform performance. In the absence of strong rule-of-law institutions to sustain the market economy, the CCP’s organizational resources enable the supreme leaders to control their political factions. The CCP’s supreme leaders thus can induce non-public investors to follow the party’s economic development goals. Thus, the CCP’s informal politics may not result primarily in inefficiency or chaos. Instead, it may be a driving force for informal …


Temporal Dynamics Of Attention Bias In Anxiety: An Eye Tracking Study, Abel Mathew Aug 2022

Temporal Dynamics Of Attention Bias In Anxiety: An Eye Tracking Study, Abel Mathew

Theses and Dissertations

Behavioral reaction time (RT) measures, like the dot-probe and spatial cueing tasks, have shown that individuals with anxiety tend to bias their attention toward threat as compared to neutral stimuli. However, the literature has revealed mixed findings due to the simplistic calculation of attention bias (AB; i.e., Mean RT Threat – Mean RT Neutral). Research has shown that attention bias fluctuation (i.e., patterns of both vigilance and avoidance), is indicative of attention dyscontrol, which is evident in those with psychopathology. As such, the purpose of this study was to evaluate whether AB fluctuation via behavioral RT measures and eye-tracking, stands …


The Exchange Rate System Reform In China: Some Important Results, Paul S. L. Yip, Yiu Kuen Tse, Yingjie Dong Aug 2022

The Exchange Rate System Reform In China: Some Important Results, Paul S. L. Yip, Yiu Kuen Tse, Yingjie Dong

Research Collection School Of Economics

We provide a review and empirical study on the exchange rate system reform in China. In the initial stage of the reform the Chinese central bank PBoC's implicit promise of gradual appreciation helped to contain the appreciation rate and volatility of the renminbi. Subsequently, under US pressure for faster appreciation and hence the PBoC's moderate violation of the implicit promise, there was a significant rise in the appreciation rate and the volatility of the renminbi. The moderate violation deteriorated further, forming a vicious cycle of speculative flows and faster exchange rate changes. Upon the onset of the global financial crisis …


A Small Wolf Eats A Large Apple: An Experimental Investigation Of The Temporal Processing Of Conceptual Magnitudes, Carolina Alvarez Aug 2022

A Small Wolf Eats A Large Apple: An Experimental Investigation Of The Temporal Processing Of Conceptual Magnitudes, Carolina Alvarez

Theses and Dissertations

When individuals are presented with two options and are asked to select the conceptually larger item, a size congruity effect is usually observed. A size congruity effect is present in comparison tasks when congruent stimuli, whose physical size and conceptual size match, are compared much faster than incongruent stimuli, whose physical size and conceptual size do not match. The current study used images and words as stimuli to investigate the two competing hypotheses for the size congruity effect using delta plots. Positive delta plots were observed when response time for incongruent items was compared to congruent items, providing evidence of …


Getting By (Or Not) With A Little Help From My Friends: Intersections Of Financial Literacy, Race And Gender On Source Of Financial Information, Catherine Wacera Muriuki Aug 2022

Getting By (Or Not) With A Little Help From My Friends: Intersections Of Financial Literacy, Race And Gender On Source Of Financial Information, Catherine Wacera Muriuki

Theses and Dissertations

Financial literacy is important to individuals as well as to the economy. It is touted as crucial for individuals because it allows them to make informed decisions on credit and saving products. To the economy, it is the bedrock upon which micro-and macro-policies are embedded. Financial literacy is said to be a springboard to financial capability, enhancing a person’s ability to manage their monies, make informed investment decisions, and take control of their financial advancement. Low financial literacy is often associated with larger unbanked or underbanked populations. According to 2019 NFEC data, after administering a financial literacy test, only 66% …


The Association Of Military Sexual Harassment/Assault With Suicidal Ideation, Plans, Attempts, And Mortality Among Service Members And Veterans: A Meta-Analysis And Research Study, Whitney S. Livingston Aug 2022

The Association Of Military Sexual Harassment/Assault With Suicidal Ideation, Plans, Attempts, And Mortality Among Service Members And Veterans: A Meta-Analysis And Research Study, Whitney S. Livingston

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Rates of death by suicide and sexual harassment/assault that occurs during military service (MSH/A) are higher among service members/veterans than rates of suicide and sexual violence among civilians. Suicide risk includes thoughts and attempts, and research examining the strength of the relationship between suicide risk and sexual violence across past studies that examined this association are limited to civilians. Moreover, current theories hypothesizing which factors are related to suicide risk do not adequately predict suicide among service members and veterans, and do not account for factors such as MSH/A. This two-study dissertation first calculated the magnitude of the relationship between …


Who Is More Likely To Be Delinquent In Their Mortgage Payments Among Homeowners? The Role Of Financial Literacy, Ellie Donne Hansen Aug 2022

Who Is More Likely To Be Delinquent In Their Mortgage Payments Among Homeowners? The Role Of Financial Literacy, Ellie Donne Hansen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Homeownership is a way for families to build wealth and marks status attainment. Despite the many benefits of homeownership, homeowners who are delinquent on their mortgages lose the effective means of wealth accumulation and may trigger the beginning of the foreclosure process. There is evidence that homeowners with appropriate levels of financial literacy have a lower likelihood of mortgage delinquency.

Using data from the 2018 National Financial Capability Study (NFCS), the main purpose of this study was to examine what factors are associated with mortgage delinquency among homeowners. This study also examined to what extent financial literacy plays a role …


Teaching Multicultural Psychology As A Cultural Competence Intervention: An Empirical Evaluation Of Course Components, Elizabeth Tish Hicks Aug 2022

Teaching Multicultural Psychology As A Cultural Competence Intervention: An Empirical Evaluation Of Course Components, Elizabeth Tish Hicks

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Previous research has shown that a semester-long multicultural psychology course can effectively increase students’ cultural competence-related attitudes when students complete the class in-person and online. Cultural competence refers to the knowledge, awareness, and skills required to appreciate, recognize, and effectively work with members of other cultural groups. This dissertation examined several components of a multicultural psychology course: ethical grading, skill development, and intergroup contact. The first paper discussed techniques used to minimize grading bias and examined whether cultural competence shifts impacted grading. Students’ cultural competence scores did not relate to or predict their grades in the course, which supported the …


The Personal Is Still Political: An Analysis Of Jessica Valenti's Contemporary Feminine Style, Michala M. Zilkey Aug 2022

The Personal Is Still Political: An Analysis Of Jessica Valenti's Contemporary Feminine Style, Michala M. Zilkey

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In 2016, Jessica Valenti’s memoir, Sex Object, was published. Sex Object describes Valenti’s experiences of sexualization and objectification in a personal and anecdotal format. The feminine style, a rhetorical style that bridges the divide between norms of femininity and expectations of public oration, has been heralded as essential for advancing the feminist movement. This thesis asks the question, to what extent does contemporary feminists’ rhetoric mirror and diverge from earlier iterations of the feminine style? I argue that Valenti’s employs a feminine style that utilizes relational norms and self-disclosure to illustrate the personal as political and the political as …


Siblings Influence On Young Adults' Development: A Three-Study Dissertation, Jenna C. Dayley Aug 2022

Siblings Influence On Young Adults' Development: A Three-Study Dissertation, Jenna C. Dayley

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

As the longest lasting close relationship, often extending from birth until death, sibling relationships play an important role throughout the life course. To date, however, only limited work has examined the process by which siblings influence each other during young adulthood. Given that developmental differences between older and younger siblings diminish in young adulthood, it is possible that bidirectional (older-to-younger as well as younger-to-older) are more likely as compared to adolescence (in which top-down or older-to-younger influence has primarily been explored). It is further possible that processes of observational learning, including modeling, and sibling differentiation continue into young adulthood, shaping …


Predictors Of Special Education Inequity In Rural Rocky Mountain West Schools, Jac'lyn Bera Aug 2022

Predictors Of Special Education Inequity In Rural Rocky Mountain West Schools, Jac'lyn Bera

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Current research focusing on disproportionality and equity in schools focuses on the urban environment, resulting in a significant gap in our understanding of the challenges of rural schools. For rural, racially and ethnically minoritized (R/EM) students who have disabilities, this research is largely unavailable or minimal, and negatively affects our understanding of rural needs, barriers, and successes for this historically underserved population. There is even less research focused specifically on rural students in the Rocky Mountain West (RMW) region of the United States. Understanding these factors serves as a critical area of research, and is the focus of this study. …


Vietnam Continued: The Battle For American Public Memory In Public School History Textbooks, Donnie Owens Aug 2022

Vietnam Continued: The Battle For American Public Memory In Public School History Textbooks, Donnie Owens

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The question of “how do we actively remember the past?” can perhaps best describe the purpose of public memory studies. Acknowledging this question, I analyze popular public-school textbooks to assess the way in which educational literature constructs the public memory of the Vietnam War. In total, the narratives of the texts construct a public memory of Vietnam as a controversial conflict contained within a decade of American uncertainty. However, these narratives also take care to minimize or leave aside the details of Vietnam’s lasting impact and in favor of reaffirming American exceptionalism. Ultimately, this thesis finds that students who read …


Parent Work-Family Balance And Adolescent Psychosocial Well-Being During The Covid-19 Shutdown, Shailey Woodward Aug 2022

Parent Work-Family Balance And Adolescent Psychosocial Well-Being During The Covid-19 Shutdown, Shailey Woodward

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Parents who work have many responsibilities to fulfill. They may encounter frustration and exhaustion, which can impact how well they parent. Experiences such as financial strain and the COVID-19 shutdown may further impact parenting. At the same time, adolescents are establishing identities and need attentive parents to help them develop healthy psychosocial well-being. Using Erikson’s (1968) psychosocial theory of development as a backdrop, the purpose of this study was to observe the relationships between parent work-family balance, parenting satisfaction, and adolescent psychosocial well-being within the context of financial stress and the COVID-19 shutdown. I found that parent and adolescent perceptions …


A Social-Ecological Approach To Understanding The Structure, Function, And Challenges Faced By Fisheries, Chase C. Lamborn Aug 2022

A Social-Ecological Approach To Understanding The Structure, Function, And Challenges Faced By Fisheries, Chase C. Lamborn

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Fisheries throughout the world play many important roles, and they are also subject to many pressures. The tension between roles and pressures is increasing, and as a result, many fisheries are being utilized to, or over their capacity, which ultimately threatens their sustainability. To address these challenges, this dissertation provides insights and tools to help us better understand fisheries and the challenges they face. The first study explores the impacts of an earlier spring runoff in Montana. Earlier runoff has resulted in lower and warmer summer flows, which is stressing coldwater species like trout. This stress is affecting fishing quality, …


Reversing The Gaze: Using Indigenous And Western Worldviews To Compare Coverage Of Climate Change And Indigenous Peoples In The News Media, Gina Mccrackin Aug 2022

Reversing The Gaze: Using Indigenous And Western Worldviews To Compare Coverage Of Climate Change And Indigenous Peoples In The News Media, Gina Mccrackin

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The news media acts as an important conduit for shaping societal views of the socio-politics of climate change. While climate change will indeed affect everyone, it will not affect everyone equally. Indigenous peoples are among the populations whose well-being is threatened the most by climate change. International scholarship finds it is not uncommon for Indigenous cultures, communities, and perspectives to be underrepresented and misrepresented in Western climate change media. Research also indicates that fair Indigenous representation occurs when Indigenous peoples are the authors of news articles themselves. We evaluated the differences in discussions of climate change and environmental issues …


Psychosocial Development In Adolescents With Disabilities: Modification And Evaluation Of Measures, Myles Maxey Aug 2022

Psychosocial Development In Adolescents With Disabilities: Modification And Evaluation Of Measures, Myles Maxey

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Adolescents with intellectual and developmental disabilities (IDD) are often overlooked in research, including psychosocial development (self-esteem, autonomy, attachment, and identity formation). Reliable and consistent survey tools are essential to understanding developmental trends. This study focused on creating surveys that could be comprehended by all adolescents, no matter if they experience IDD or not. Findings from this study suggested that there are more similarities than difference across areas of psychosocial development among adolescents with IDD as well as with their typically developing peers. These findings can help researchers more accurately assess psychosocial development for more adolescents, including those experiencing IDD.


Implications Of Malthus-Boserup Ratcheting For Interpreting The Archaeological Record, Gideon F. Maughan Aug 2022

Implications Of Malthus-Boserup Ratcheting For Interpreting The Archaeological Record, Gideon F. Maughan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Prehistoric populations across North America seem to grow exponentially, with some variation between regions. Archaeologists have explored the differences somewhat, but have not explained the differences or the sustained growth with any reference to what may be going on under the surface in a way that is relevant to all regions. I propose that environmental limits on population are shaped by what populations eat and how they acquire food, and that when populations are large enough to feel the scarcity in their environment, they change their way of life in a way that increases those limits. The model I propose …