University of Georgia

About: University of Georgia is a education organization based out in Athens, Georgia, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 41934 authors who have published 93622 publications receiving 3713212 citations. The organization is also known as: UGA & Franklin College.

Continuity and discontinuity of attachment from infancy through adolescence.

Abstract: This study reports relations between infant Ainsworth Strange Situation classifications, negative life events, and Adolescent Attachment Interview classifications. Overall, the stability of secure versus insecure classifications was 77%, and infant attachment classification was a significant predictor of adolescent attachment classification. Chi-square analyses indicate that negative life events are significantly related to change in attachment classification. The sample (n = 30) is drawn from the Family Lifestyles Project (FLS), an ongoing longitudinal study of children's development within the context of nonconventional family lifestyles. The distribution of family lifestyles within this study, unlike those in the full FLS sample, represent a higher proportion of conventional two-parent families (40%). There were no differences between adolescents reared in conventional or nonconventional families in the distribution of adolescent attachment security, the experience of negative life events, or the continuity of attachment from infancy through adolescence.

On the Division of Short-Term and Working Memory: An Examination of Simple and Complex Span and Their Relation to Higher Order Abilities.

Abstract: Research has suggested that short-term memory and working memory (as measured by simple and complex span tasks, respectively) are separate constructs that are differentially related to higher order cognitive abilities. This claim is critically evaluated by reviewing research that has compared simple and complex span tasks in both experimental and correlational studies. In addition, a meta-analysis and re-analyses of key data sets were conducted. The review and analyses suggest that simple and complex span tasks largely measure the same basic subcomponent processes (e.g., rehearsal, maintenance, updating, controlled search) but differ in the extent to which these processes operate in a particular task. These differences largely depend on the extent to which phonological processes are maximized and variability from long list lengths is present. Potential methodological, psychometric, and assessment implications are discussed and a theoretical account of the data is proposed.

Land cover changes and their biogeophysical effects on climate

Abstract: Land cover changes (LCCs) play an important role in the climate system. Research over recent decades highlights the impacts of these changes on atmospheric temperature, humidity, cloud cover, circulation, and precipitation. These impacts range from the local- and regional-scale to sub-continental and global-scale. It has been found that the impacts of regional-scale LCC in one area may also be manifested in other parts of the world as a climatic teleconnection. In light of these findings, this article provides an overview and synthesis of some of the most notable types of LCC and their impacts on climate. These LCC types include agriculture, deforestation and afforestation, desertification, and urbanization. In addition, this article provides a discussion on challenges to, and future research directions in, assessing the climatic impacts of LCC.

Humic Matter in Soil and the Environment: Principles and Controversies

Abstract: Issue of Organic Matter Concept of Organic Matter Issue of Biomass Terrestrial and Aquatic Organic Matter Issue of Dissolved Organic Matter or DOM Effect of Organic Matter on Ecology and Water Chemistry Issue of Acronyms Concept of Humus Issue of Humus Nonhumic Fraction of Humus Humic Fraction of Humus Issue of Glomalin Concepts of Humic Matter Overview: From Biopolymers to Nanotube Supramolecular Assemblages Biopolymer Concept Operational Concept Issue of Real Compounds Micellar Concept Supramolecular Concept Nanotube Membrane Concept Nature and Distribution of Humic Matter Historical Background: Era of Ulmic, Crenic, and Geic Acids Distribution of Humic Matter Classification of Humic Matter Genesis of Humic Matter Major Pathways of Humification Precursors of Humic Matter Theories of Humification Statistical Modeling of Humification Extraction and Fractionation of Humic Substances Search for Extractants Terrestrial Humic Matter Fractionation of Humic Substances Aquatic Humic Matter Determination of DOC and DOM Types of Humic Substances Chemical Composition of Humic Matter Elemental Composition Group Composition Theory of Minimum Formula Weights Molecular Structures Computer Modeling of Humic Acid Structures Characterization of Humic Substances Chemical Characterization Molecular Weights Ultraviolet and Visible Light Spectrophotometry Infrared Spectroscopy Nuclear Magnetic Resonance Spectroscopy Electron Microscopy of Humic Matter Electrochemical Properties of Humic Matter Origin and Types of Electric Charges Surface Charge Density Electric Double Layer Chemical Reactions and Interactions Complex Reaction and Chelation Bridging Mechanism Agronomic Importance of Humic Matter Importance in Soils Effect on Soil Physical Properties Effect on Soil Chemical Properties Effect on the Soil Redox System Effect on Soil Biological Properties Importance in Plant Growth Environmental and Industrial Importance of Humic Matter Importance in the Environment Importance in Industry Importance as Pharmaceuticals References and Additional Readings Appendix A: Greek Alphabet Appendix B: Atomic Weights of Major Elements in Soils

Locus of control at work: a meta‐analysis

Abstract: This study meta-analyzed the relationships between locus of control (LOC) and a wide range of work outcomes. We categorized these outcomes according to three theoretical perspectives: LOC and well-being, LOC and motivation, and LOC and behavioral orientation. Hypotheses reflecting these three perspectives were proposed and tested. It was found that internal locus was positively associated with favorable work outcomes, such as positive task and social experiences, and greater job motivation. Our findings are discussed in relation to research on core self-evaluation and the Big Five personality traits. Copyright © 2006 John Wiley & Sons, Ltd.