The nature of regressions in the acquisition of phonological grammars

2014 ◽  
Vol 1 (1) ◽  
Author(s):  
Anne-Michelle Tessier
Keyword(s):  
Longitudinal Data ◽  
Challenging Problem ◽  
Flip Flop ◽  
Empirical Base ◽  
Harmonic Serialism ◽  
Grammar Learning ◽  
The Many ◽  
Regression Pattern ◽  
Over Time ◽  
Marked Structure

<p>Children’s acquisition of their L1 phonological grammar is typically understood as a gradual progression from an initial universal state towards a language-specific one, in which learners incrementally change their grammars to better approximate the target. One challenging problem for this view, however, are the many reports of ‘U-shaped development’ in which production temporarily regresses, diverging further from the target rather than drawing closer. Based on existing and novel analyses of longitudinal data, this paper argues that phonological regressions should <span style="text-decoration: underline;">not</span> be captured directly within the normal workings of children’s error-driven mechanisms for grammar learning. It also identifies a kind of regression that seems plausible but is nonetheless apparently unattested: one in which markedness constraints flip-flop over time, so that improvement on one marked structure entails regression on another. With this initial empirical base, the paper then demonstrates that an error-driven OT-like learner which stores its errors and imposes certain persistent biases can in fact easily regress in the unattested way. Section 5 discusses how OT’s grammatical parallelism is in part responsible for creating the unattested regression pattern, and how a serial constraint-based grammar like Harmonic Serialism (McCarthy 2007 <em>et seq</em>) avoids this regression. </p>

Coping with longitudinal data in research on developmental psychopathology

2006 ◽  
Vol 30 (1) ◽  
pp. 20-25 ◽  
Author(s):  
David A. Cole
Keyword(s):  
Data Collection ◽  
Longitudinal Data ◽  
Developmental Psychopathology ◽  
Careful Consideration ◽  
Two Dimensions ◽  
The Other ◽  
Outcome Variable ◽  
The Third ◽  
Data Analytic ◽  
Over Time

Many outcome variables in developmental psychopathology research are highly stable over time. In conventional longitudinal data analytic approaches such as multiple regression, controlling for prior levels of the outcome variable often yields little (if any) reliable variance in the dependent variable for putative predictors to explain. Three strategies for coping with this problem are described. One involves focusing on developmental periods of transition, in which the outcome of interest may be less stable. A second is to give careful consideration to the amount of time allowed to elapse between waves of data collection. The third is to consider trait-state-occasion models that partition the outcome variable into two dimensions: one entirely stable and trait-like, the other less stable and subject to occasion-specific fluctuations.

The silence of the ellipses: Why history can’t be about telling our children lies

2021 ◽  
Vol 102 (5) ◽  
pp. 8-11
Author(s):  
Sam Wineburg
Keyword(s):  
History Textbooks ◽  
Historical Study ◽  
The Face ◽  
The Many ◽  
Over Time ◽  
Boston Massacre

History textbooks are less likely to be complete renderings of the truth than a series of stories textbook authors (and the many stakeholders who influence them) consider beneficial. Sam Wineburg describes how the process of writing history textbooks often leads to sanitized and inaccurate versions of history. As an example, he describes how the story of Crispus Attucks and the Boston massacre has evolved over time. The goal of historical study, he explains, is not to cultivate love or hate of the country. Rather, it should provide us with the courage needed to look ourselves unflinching in the face, so that we may understand who we were and who we might aspire to become.

Neighborhood Firearm Victimization Rates and Social Capital Over Time

2015 ◽  
Vol 30 (1) ◽  
pp. 81-96 ◽  
Author(s):  
Justin C. Medina
Keyword(s):  
Social Capital ◽  
Longitudinal Data ◽  
Theoretical Framework ◽  
Policy Planning ◽  
Regression Analyses ◽  
Neighborhood Social Capital ◽  
The Relationship ◽  
The U.S ◽  
Over Time ◽  
Victimization Rates

Distribution of firearm victimization is not equal within cities. Victimization can persistently concentrate in a small number of neighborhoods, while others experience very little violence. Theorists have pointed to one possible explanation as the ability of groups to control violence using social capital. Researchers have shown this association at the U.S. county, state, and national levels. Few studies, however, have examined the relationship between neighborhood social capital and violence over time. This study uses longitudinal data to ask whether neighborhood social capital both predicts and is influenced by firearm victimization over 3 years in Philadelphia. The results of several regression analyses suggest that trusting others and firearm victimization are inversely related over time. Implications for neighborhood policy planning and social capital as a theoretical framework are discussed.

Differential Aging: An Exploratory Approach Using Cluster Analysis

1984 ◽  
Vol 18 (2) ◽  
pp. 141-157 ◽  
Author(s):  
Graeme Ford ◽  
Rex Taylor
Keyword(s):  
Cluster Analysis ◽  
Longitudinal Data ◽  
Random Sample ◽  
Successful Aging ◽  
Elderly Population ◽  
Structural Data ◽  
Exploratory Approach ◽  
Aging Well ◽  
Well Elderly ◽  
Over Time

This article uses cluster analysis to identify different patterns of personal resources within a random sample of the well, elderly population. Ten such patterns or natural groupings are identified and their implications for coping and successful aging are discussed. It is apparent that there are a number of ways both of aging well and aging badly, and that these patterns cannot be predicted solely on the basis of structural data. The article poses a number of questions on the performance of cluster members over time and draws attention to the importance of longitudinal data.

scholarly journals Kilburn High Road Revisited

2016 ◽  
Vol 1 (2) ◽  
pp. 128-140 ◽  
Author(s):  
Cristina Capineri
Keyword(s):  
Sense Of Place ◽  
Service Management ◽  
Street Life ◽  
The Many ◽  
High Road ◽  
Simple Narrative ◽  
Unique Relationship ◽  
Over Time ◽  
Selection Of

Drawing on John Agnew’s (1987) theoretical framework for the analysis of place (location, locale and sense of place) and on Doreen Massey’s (1991) interpretation of Kilburn High Road (London), the contribution develops an analysis of the notion of place in the case study of Kilburn High Road by comparing the semantics emerging from Doreen Massey’s interpretation of Kilburn High Road in the late Nineties with those from a selection of noisy and unstructured volunteered geographic information collected from Flickr photos and Tweets harvested in 2014–2015. The comparison shows how sense of place is dynamic and changing over time and explores Kilburn High Road through the categories of location, locale and sense of place derived from the qualitative analysis of VGI content and annotations. The contribution shows how VGI can contribute to discovering the unique relationship between people and place which takes the form given by Doreen Massey to Kilburn High Road and then moves on to the many forms given by people experiencing Kilburn High Road through a photo, a Tweet or a simple narrative. Finally, the paper suggests that the analysis of VGI content can contribute to detect the relevant features of street life, from infrastructure to citizens’ perceptions, which should be taken into account for a more human-centered approach in planning or service management.

scholarly journals LACK OF EMPHASIS ON PSYCHOLOGICAL REHABILITATION FOR STROKE PATIENTS

2012 ◽  
Vol 1 (1) ◽  
pp. 2
Author(s):  
Samina Masood Haider
Keyword(s):  
Emotional Difficulties ◽  
Stroke Survivors ◽  
Stroke Patients ◽  
Post Stroke ◽  
Post Stroke Depression ◽  
The Many ◽  
Over Time

It has been observed that most of the patients are not aware of the dilapidating affects of post stroke depression on their recovery, survival and a return to normal activities of life. The lack of emphasis on psychological rehabilitation for stroke patients is a source of concern for me and I would like to bring to your attention about the facts regarding the implications of proper psychological rehabilitation is not undertaken. Stroke survivors report a range of emotional difficulties, most common being fear, anxiety, frustration, anger, sadness and a sense of grief for their physical and mental losses. Usually these feelings may fade over time however, some patients may struggle with adjusting to the many changes following stroke. When this happens these feelings can develop into depression. It is estimated that approximately one-third of stroke1 survivors develop post-stroke depression (PSD)

scholarly journals Bowing before Dual Gods: How Structured Flexibility Sustains Organizational Hybridity

2017 ◽  
Vol 64 (1) ◽  
pp. 1-44 ◽  
Author(s):  
Wendy K. Smith ◽  
Marya L. Besharov
Keyword(s):  
Longitudinal Data ◽  
Digital Divide ◽  
Social Enterprise ◽  
Stakeholder Relationships ◽  
Core Elements ◽  
Organizational Features ◽  
Two Sides ◽  
Adaptive Approaches ◽  
Over Time

Organizations increasingly grapple with hybridity—the combination of identities, forms, logics, or other core elements that would conventionally not go together. Drawing on in-depth longitudinal data from the first ten years of a successful social enterprise—Digital Divide Data, founded in Cambodia—we induce an empirically grounded model of sustaining hybridity over time through structured flexibility: the interaction of stable organizational features and adaptive enactment processes. We identify two stable features—paradoxical frames, involving leaders’ cognitive understandings of the two sides of a hybrid as both contradictory and interdependent, and guardrails, consisting of formal structures, leadership expertise, and stakeholder relationships associated with each side—that together facilitate ongoing adaptation in the meanings and practices of dual elements, sustaining both elements over time. Our structured flexibility model reorients research away from focusing on either stable or adaptive approaches to sustaining hybridity toward understanding their interaction, with implications for scholarship on hybridity, duality, and adaptation more broadly.

Health and natural landscapes: concepts and applications

2021 ◽  
Keyword(s):  
Climate Change ◽  
Human Development ◽  
Traditional Ecological Knowledge ◽  
Well Being ◽  
Natural World ◽  
Ecological Knowledge ◽  
Positive Outcomes ◽  
Natural Landscapes ◽  
The Many ◽  
Over Time

Abstract This book contains 8 chapters that discuss and explore these positive outcomes by delving into how humans perceive and respond to the natural world. It also looks at the different stages of human development and how societal perspectives regarding natural landscapes have changed over time. These perspectives influence our responses to current issues such as climate change and pandemics. Examining our worldviews is critical to developing a deeper understanding of human beliefs and relationships with natural landscapes. Moreover, empirically based theories and models can be useful in enhancing that understanding, but other realities are also important such as traditional ecological knowledge (TEK) and a rekindling of a sense of connection with nature. Whether empirically derived in recent decades or handed down through the generations, this knowledge can be useful as we consider the many forms of human well-being, including physical, mental, spiritual, and social.

Abstract 439: Trajectory Analysis of Left Ventricular Dimensions From Biobank Data Uncovers Novel Genetic Associations

2020 ◽  
Vol 127 (Suppl_1) ◽  
Author(s):  
Tess Pottinger ◽  
Megan J Puckelwartz ◽  
Lorenzo L Pesce ◽  
Anthony Gacita ◽  
Isabella Salamone ◽  
...  
Keyword(s):  
Heart Failure ◽  
Longitudinal Data ◽  
Association Studies ◽  
The United States ◽  
Left Ventricular ◽  
Genome Wide Association Studies ◽  
Qtc Interval ◽  
Regulatory Regions ◽  
Genome Wide ◽  
Over Time

Background: Approximately 6 million adults in the United States have heart failure. The progression of heart failure is variable arising from differences in sex, age, genetic background including ancestry, and medication response. Many population-based genetic studies of heart failure have been cross-sectional in nature, failing to gain additional power from longitudinal analyses. As heart failure is known to change over time, using longitudinal data trajectories as a quantitative trait will increase power in genome wide association studies (GWAS). Methods: We used the electronic health record in a racially and ethnically diverse medical biobank from a single, metropolitan US center. We used whole genome data from 896 unrelated participants analyzed, including 494 who had at least 1 electrocardiogram and 324 who had more than 1 echocardiogram (average of 3 observations per person). A mixture model based semiparametric latent growth curve model was used to cluster outcome measures used for genome-wide analyses. Results: GWAS on the trajectory probability of QTc interval identified significant associations with variants in regulatory regions proximal to the WLS gene, which encodes Wntless, a Wnt ligand secretion mediator. WLS was previously associated with QTc and myocardial infarction, thus confirming the power of the method. GWAS on the trajectory probability of left ventricular diameter (LVIDd) identified significant associations with variants in regulatory regions near MYO10 , which encodes unconventional Myosin-10. MYO10 was previously associated with obesity and metabolic syndrome. Conclusions: This is the first study to show an association with variants in or near MYO10 and left ventricular dimension changes over time. Further, we found that using trajectory probabilities can provide increased power to find novel associations with longitudinal data. This reduces the need for larger cohorts, and increases yield from smaller, well-phenotyped cohorts, such as those found in biobanks. This approach should be useful in the study of rare diseases and underrepresented populations.

The Colombian Private Sector in Colombia’s Transition to Peace

2019 ◽  
pp. 255-278
Author(s):  
Angelika Rettberg
Keyword(s):  
Civil War ◽  
Private Sector ◽  
Armed Conflict ◽  
Contextual Factors ◽  
Business Strategies ◽  
Profit Motive ◽  
Civil Action ◽  
The Many ◽  
Over Time ◽  
Armed Actors

During the Colombian civil war, businesses undertook both civil and uncivil actions, but the civil action of a “pro-peace coalition” was among the many factors moving the conflict toward its (uneasy) settlement in 2016. This chapter documents the civil action efforts of a pro-peace coalition, explores how support for these efforts changed over time—particularly in the last two attempts to negotiate peace, in Caguán (1998–2002) and in Havana, Cuba (2012–2016), and focuses on the motivations behind them. Contrary to simplistic analyses, it demonstrates that the profit motive alone cannot explain business strategies in contexts of conflict and peacebuilding. Contextual factors, the type of organization, and access to politics are important in understanding how business factions respond to armed conflict, including those participating in civil action within the “pro-peace coalition” and those aligning themselves with armed actors. The explanation of Colombian business strategies to address armed conflict holds lessons for understanding business-led civil action in other countries.

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