scholarly journals Assessing and Relaxing Assumptions in Quasi-Simplex Models

2021 ◽  
pp. 155-172
Author(s):  
Alexandru Cernat ◽  
Peter Lugtig ◽  
Nicole Watson ◽  
S.C. Noah Uhrig
Keyword(s):  
Repeated Measures ◽  
Available P ◽  
British Household Panel Survey ◽  
Panel Survey ◽  
Relative Ease ◽  
Simplex Model ◽  
Estimate Reliability ◽  
Using Data ◽  
Simplex Models

The quasi-simplex model (QSM) makes use of at least three repeated measures of the same variable to estimate reliability. The model has rather strict assumptions and ignoring them may bias estimates of reliability. While some previous studies have outlined how several of its assumptions can be relaxed, they have not been exhaustive and systematic. Thus, it is unclear what all the assumptions are and how to test and free them in practice. This chapter will addresses this situation by presenting the main assumptions of the quasi-simplex model and the ways in which users can relax these with relative ease when more than three waves are available. Additionally, by using data from the British Household Panel Survey we show how this is practically done and highlight the potential biases found when ignoring the violations of the assumptions. We conclude that relaxing the assumptions should be implemented routinely when more than three waves of data are available.

scholarly journals Experiences of Age and Gender: Narratives of Progress and Decline

2009 ◽  
Vol 69 (2) ◽  
pp. 133-158 ◽  
Author(s):  
Jane Nolan ◽  
Jacqueline Scott
Keyword(s):  
Historical Development ◽  
Double Standard ◽  
Chronological Age ◽  
British Household Panel Survey ◽  
Panel Survey ◽  
Age And Gender ◽  
Cultural Narrative ◽  
Aging Body ◽  
And Gender ◽  
Using Data

This article examines experiences of chronological age. Using data from the British Household Panel Survey, we analyze both qualitatively and quantitatively verbatim responses from 8177 respondents aged 16 and over concerning the (dis)advantages of their age. Two main questions are tested: 1) Is the cultural narrative of age decline supported by the experiences of our respondents? 2) Are age experiences differentiated by gender? We find people's age experiences are multidimensional and multidirectional, incorporating narratives of progress and decline. Our data show marked gender differences in age experiences, but give little support to claims of a double standard concerning the aging body. More generally, we find that people contrast current experiences with their younger and older selves. We argue that future conceptual developments need to take seriously both a synchronic and diachronic understanding of age, highlighting not just the present but also the distinctive historical development of individuals across time.

scholarly journals The Effects of Teleworking on Housework Division and Well-Being of Couples

2017 ◽  
Author(s):  
Eleftherios Giovanis
Keyword(s):  
Fixed Effects ◽  
Well Being ◽  
British Household Panel Survey ◽  
Panel Survey ◽  
Men And Women ◽  
Household Chores ◽  
The Family ◽  
Family Demands ◽  
Using Data ◽  
The Relationship

This study examines the relationship between teleworking, gender roles and happiness of couples using data from the British Household Panel Survey (BHPS) and the Understanding Society Survey (USS) during the period 1991-2012. Various approaches are followed, including Probit-adapted fixed effects, multinomial Logit and Instrumental variables (IV). The results support that both men and women who are teleworkers spend more time on housework, while teleworking increases the probability that the household chores examined in this study, such as cooking, cleaning ironing and childcare, will be shared relatively to those who are non-teleworkers. In addition, women are happier when they or their spouse is teleworker, as well as, both men and women are happier when they state that the specific household chores are shared. Thus, women teleworkers may be happier because they can face the family demands and share the household chores with their spouse, increasing their fairness belief about the household division allocation and improving their well-being, expressed by happiness.

scholarly journals Disability and Disadvantage: Selection, Onset, and Duration Effects

2004 ◽  
Vol 33 (3) ◽  
pp. 479-501 ◽  
Author(s):  
STEPHEN P. JENKINS ◽  
JOHN A. RIGG
Keyword(s):  
Selection Effect ◽  
Disabled Persons ◽  
Economic Disadvantage ◽  
British Household Panel Survey ◽  
Panel Survey ◽  
Average Income ◽  
Working Age ◽  
Employment Rates ◽  
Using Data ◽  
Post Onset

This article analyses the economic disadvantage experienced by disabled persons of working age using data from the British Household Panel Survey. We argue that there are three sources of disadvantage among disabled persons: pre-existing disadvantage among those who become disabled (a ‘selection’ effect), the effect of disability onset itself, and the effects associated with remaining disabled post-onset. We show that employment rates fall with disability onset, and continue to fall the longer a disability spell lasts, whereas average income falls sharply with onset but then recovers subsequently (though not to pre-onset levels).

scholarly journals Developmental Delays in Executive Function from 3 to 5 Years of Age Predict Kindergarten Academic Readiness

2016 ◽  
Vol 50 (4) ◽  
pp. 359-372 ◽  
Author(s):  
Michael T. Willoughby ◽  
Brooke Magnus ◽  
Lynne Vernon-Feagans ◽  
Clancy B. Blair ◽  
Keyword(s):  
Early Childhood ◽  
Executive Function ◽  
Repeated Measures ◽  
Receptive Vocabulary ◽  
Academic Readiness ◽  
Odds Ratios ◽  
Life Project ◽  
Growth Mixture ◽  
Academic Impairment ◽  
Using Data

Substantial evidence has established that individual differences in executive function (EF) in early childhood are uniquely predictive of children’s academic readiness at school entry. The current study tested whether growth trajectories of EF across the early childhood period could be used to identify a subset of children who were at pronounced risk for academic impairment in kindergarten. Using data that were collected at the age 3, 4, and 5 home assessments in the Family Life Project ( N = 1,120), growth mixture models were used to identify 9% of children who exhibited impaired EF performance (i.e., persistently low levels of EF that did not show expected improvements across time). Compared to children who exhibited typical trajectories of EF, the delayed group exhibited substantial impairments in multiple indicators of academic readiness in kindergarten (Cohen’s ds = 0.9–2.7; odds ratios = 9.8–23.8). Although reduced in magnitude following control for a range of socioeconomic and cognitive (general intelligence screener, receptive vocabulary) covariates, moderate-sized group differences remained (Cohen’s ds = 0.2–2.4; odds ratios = 3.9–5.4). Results are discussed with respect to the use of repeated measures of EF as a method of early identification, as well as the resulting translational implications of doing so.

scholarly journals Identifying Metabotypes From Complex Biological Data Using PARAFAC

2021 ◽  
Vol 5 (Supplement_2) ◽  
pp. 882-882
Author(s):  
Viktor Skantze ◽  
Mikael Wallman ◽  
Ann-Sofie Sandberg ◽  
Rikard Landberg ◽  
Mats Jirstrand ◽  
...  
Keyword(s):  
Amino Acid ◽  
Repeated Measures ◽  
Dietary Intervention ◽  
Biological Data ◽  
Multidimensional Data ◽  
Large Individual ◽  
Metabolomics Data ◽  
Amino Acid Levels ◽  
Using Data ◽  
Tensor Data

Abstract Objectives Research have identified large individual variation in physiological response to diet, which has led to more focused investigations in precision nutrition. One approach towards personalized nutrition is to identify groups of differential responders, so called metabotypes (i.e., clusters of individuals with similar metabolic profiles and/or regulation). Metabotyping has previously been addressed using matrix decomposition tools like principal component analysis (PCA) on data organized in matrix form. However, metabotyping using data from more complex experimental designs, involving e.g., repeated measures over time or multiple treatments (tensor data), requires new methods. Methods We developed a workflow for detecting metabotypes from experimental tensor data. The workflow is based on tensor decomposition, specifically PARAFAC which is conceptually similar to PCA but extended to multidimensional data. Metabotypes, based on metabolomics data were identified from PARAFAC scores using k-means clustering and validated by their association to anthropometric and clinical baseline data. Additionally, we evaluated the robustness of the metabotypes using bootstrapping. Furthermore, we applied the workflow to identify metabotypes using data from a crossover acute post-prandial dietary intervention study on 17 overweight males (BMI 25–30 kg/m2, 41–67 y of age) undergoing three dietary interventions (pickled herring, baked herring and baked beef), measuring 80 metabolites (from GC-MS metabolomics) at 8 time points (0–7h). Results  We identified two metabotypes characterized by differences in amino acid levels, predominantly in the beef diet, that were also associated with creatinine (p = 0.007). The metabotype with higher postprandial amino acid levels was also associated with higher fasting creatinine compared to the other metabotype. Conclusions The results stress the potential of PARAFAC to discover metabotypes from complex study designs. The workflow is not restricted to our data structure and can be applied to any type of tensor data. However, PARAFAC is sensitive to data pre-processing and further studies where differential metabotypes are related to clinical endpoints are highly warranted. Funding Sources This work has been supported by the Swedish Foundation for Strategic Research and Formas, which is gratefully acknowledged.

scholarly journals The Consequences of Divorce and Splitting up for Spatial Mobility in the UK

2013 ◽  
Vol 38 (2) ◽  
Author(s):  
Peteke Feijten ◽  
Maarten Van Ham
Keyword(s):  
Residential Mobility ◽  
Regression Models ◽  
Disruptive Effect ◽  
British Household Panel Survey ◽  
Union Dissolution ◽  
Panel Survey ◽  
Housing Situation ◽  
Spatial Mobility ◽  
Logistic Regression Models ◽  
The Uk

Union dissolution is well known to have a disruptive effect on the housing situation of those involved, and often leads to downward moves on the “housing ladder”. Much less is known about the geographies of residential mobility after union dissolution. There are, however, reasons to expect that those who experienced a union dissolution have a different likelihood of moving over longer distances than those who stay in a union, because of different moving motives. This study contributes to the existing literature by investigating the occurrences of moves, distances moved and the destinations of moves after union dissolution. The paper also contributes to the literature by investigating the effect on mobility not only of divorce, but also of splitting up and repartnering. Using longitudinal data from the British Household Panel Survey (BHPS), and logistic regression models, we found that union dissolution has a significant effect on the occurrence of moves and on moving distances.

A general theory of generic modelling and paradigm shifts: part 3 – the extension

Kybernetes ◽  
2015 ◽  
Vol 44 (2) ◽  
pp. 311-328 ◽  
Author(s):  
Maurice Yolles ◽  
Gerhard Fink
Keyword(s):  
General Theory ◽  
Agency Theory ◽  
Higher Order ◽  
Living Systems ◽  
Paradigm Shifts ◽  
Content Type ◽  
Simplex Model ◽  
Complex Phenomena ◽  
Cultural Agency ◽  
Simplex Models

Purpose – Anticipating behaviour and responding to the needs of complexity and problematic issues requires modelling to facilitate analysis and diagnosis. Using arguments of anticipation as an imperative for inquiry, the purpose of this paper is to introduce generic modelling for living systems theory, and assigns the number of generic constructs to orders of simplex modelling. An nth simplex order rests in an nth order simplex cybernetic space. A general modelling theory of higher orders of simplexity is given, where each higher order responds to every generic construct involved, the properties of which determining the rules of the complex system being that is represented. Higher orders of simplexity also explain greater degrees of complexity relatively simply, and give rise to the development of new paradigms that are better able to explain perceived complex phenomena. Design/methodology/approach – This is Part 3 of three linked papers. Using principles that arise from Schwarz’s living systems set within a framework provided by cultural agency theory, and with a rationale provided by Rosen’s and Dubois’ concepts of anticipation, the papers develop a general modelling theory of simplex orders. They show that with the development of new higher orders, paradigm shifts can occur that become responsible for new ways of seeing and resolving stubborn problematic issues. Part 1 established the fundamentals for a theory of modelling associated with cybernetic orders. Using this, in this Part 2 the authors established the principles of cybernetic orders using simplex modelling. This included a general theory of generic modelling. In this Part 3 the authors extend this, developing a fourth order simplex model, and exploring the potential for higher orders using recursive techniques through cultural agency theory. The authors also explore various forms of emergence. Findings – Cultural agency theory can be used to generate higher simplex through principles of recursion, and hence to create a potential for the generation of families of new paradigms. The idea of conceptual emergence is also tied to the rise of new paradigms. Research limitations/implications – The use of higher order simplex models to represent complex situations provides the ability to condense explanation concerning the development of particular system behaviours, and hence simplify the way in which the authors analyse, diagnose and anticipate behaviour in complex situations. Illustration is also given showing how the theory can explain the emergence of new paradigms. Practical implications – Cultural agency can be used to structure problem issues that may otherwise be problematic, within both a top-down and bottom-up approach. It may also be used to assist in establishing behavioural anticipation given an appropriate modelling approach. It may also be used to improve and compress explanation of complex situations. Originality/value – A new theory of simplex orders arises from the new concept of generic modelling, illustrating cybernetic order. This permits the possibility of improved analysis and diagnosis of problematic situations belonging to complex situations through the use of higher order simplex models, and facilitates improvement in behavioural anticipation.

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