Jennifer L Hill
Biographic Data
| ID | 3627658 |
|---|---|
| NAME | Jennifer L Hill |
| GIVEN NAMES | Jennifer L |
| FAMILY NAME | Hill |
| SIGNATURE | HILL J L |
| AFFILIATIONS | University of the West of England |
| VERIFIED | No |
| TOTAL WORKS | 12 |
| TOTAL CITATIONS | 137 |
| WORKS AS AUTHOR | 12 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1998 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 5 |
A comprehensive exposure-age dating approach to interpreting complex glacial and periglacial landscapes
Our aim was to use two exposure dating techniques in combination to understand the age and development of the full complement of glacial and periglacial landforms in the Alnesdalen drainage basin, southern Norway. This required the development of a comprehensive, landscape-scale approach based on 32 10 Be dates from 9 landforms and 121 Schmidt-hammer dates from 106 landforms, which identified a palimpsest landscape consisting of a mosaic of landf…
Age and development of active cryoplanation terraces in the alpine permafrost zone at Svartkampan, Jotunheimen, southern Norway
Schmidt-hammer exposure-age dating (SHD) of boulders on cryoplanation terrace treads and associated bedrock cliff faces revealed Holocene ages ranging from 0 ± 825 to 8890 ± 1185 yr. The cliffs were significantly younger than the inner treads, which tended to be younger than the outer treads. Radiocarbon dates from the regolith of 3854 to 4821 cal yr BP (2σ range) indicated maximum rates of cliff recession of ~0.1 mm/yr, which suggests the onset …
Chronosequences of ant nest mounds from glacier forelands of Jostedalsbreen, southern Norway
Red wood ant nest mounds were investigated on terrain deglaciated since the mid-18th century at three outlet glaciers of the Jostedalsbreen ice cap in southern Norway. Chronosequence methodology was combined with a geo-ecological approach in the context of autecology. Size and composition of 168 mounds, most of which belonged to Formica lugubris, were related to terrain age, vegetation characteristics and physical habitat types using non-metric m…
Bias Amplification and Bias Unmasking
In the analysis of causal effects in non-experimental studies, conditioning on observable covariates is one way to try to reduce unobserved confounder bias. However, a developing literature has shown that conditioning on certain covariates may increase bias, and the mechanisms underlying this phenomenon have not been fully explored. We add to the literature on bias-increasing covariates by first introducing a way to decompose omitted variable bia…
Development and Assessment of the Effectiveness of an Undergraduate General Education Foreign Language Requirement
This article describes a faculty‐led, multiyear process of formulating learning objectives and assessing the effectiveness of a foreign language requirement for all College of Arts and Sciences undergraduates at a research university. Three interrelated research questions were addressed: (1) What were the levels and patterns of language courses completed under the language requirement compared to those under the previous curriculum? (2) To what e…
Bayesian Nonparametric Modeling for Causal Inference
Researchers have long struggled to identify causal effects in nonexperimental settings. Many recently proposed strategies assume ignorability of the treatment assignment mechanism and require fitting two models—one for the assignment mechanism and one for the response surface. This article proposes a strategy that instead focuses on very flexibly modeling just the response surface using a Bayesian nonparametric modeling procedure, Bayesian Additi…
New technology, new pedagogy? Employing video podcasts in learning and teaching about exotic ecosystems
This paper examines the experiences of undergraduate university students in response to the employment of video podcasts to support learning and teaching about exotic ecosystems. Six, 15–20‐minute podcasts were made accessible to students through a virtual learning environment, either online or to download to mobile technology. The students were free to watch the podcasts whenever and wherever they chose to. The perceived and actual effectiveness…
Maternal Employment and Child Development
The employment rate for mothers with young children has increased dramatically over the past 25 years. Estimating the effects of maternal employment on children's development is challenged by selection bias and the missing data endemic to most policy research. To address these issues, this study uses propensity score matching and multiple imputation. The authors compare outcomes across 4 maternal employment patterns: no work in first 3 years post…
Sustained effects of high participation in an early intervention for low-birth-weight premature infants
Effects of high participation in the Infant Health and Development Program (IHDP), an 8-site randomized trial that targeted low-birth-weight (LBW) premature infants (N=1,082), were estimated. Children in the treatment group were offered high-quality center-based care in their 2nd and 3rd years of life (full-day care, 50 weeks per year). High-dosage effects were estimated with a new methodology that found a matched comparison group within the foll…
An Extension and Test of Converse’s “Black-and-White” Model of Response Stability
In one of the most influential works in the public opinion literature, Philip Converse proposed a “black-and-white” model that divided respondents into two groups: opinion holders and unstable opinion changers. We extend the model by allowing for a group that makes rational opinion changes over time. This enables us to (1) explore hypotheses about the adequacy of Converse’s original model, (2) estimate the percentage of the population that belong…
Classification by Opinion-Changing Behavior
We illustrate the use of a class of statistical models, finite mixture models, that can be used to allow for differences in model parameterizations across groups, even in the absence of group labels. We also introduce a methodology for fitting these models, data augmentation. Neither finite mixture models nor data augmentation is routine in the world of political science methodology, but both are quite standard in the statistical literature. The …
A Broader Template for Analyzing Broken Randomized Experiments
Randomized experiments suffering from missing data and noncompliance are a recurring problem for experimenters whose subjects are human. Until recently, analysts of such broken randomized experiments were largely forced to squeeze the data into the idealized template of the randomized experiment with neither noncompliance nor missing data. Such practices necessitate throwing away information and making strong, and often unwarranted, assumptions. …
Maternal Employment and Child Development
The employment rate for mothers with young children has increased dramatically over the past 25 years. Estimating the effects of maternal employment on children's development is challenged by selection bias and the missing data endemic to most policy research. To address these issues, this study uses propensity score matching and multiple imputation. The authors compare outcomes across 4 maternal employment patterns: no work in first 3 years post…
Sustained effects of high participation in an early intervention for low-birth-weight premature infants
Effects of high participation in the Infant Health and Development Program (IHDP), an 8-site randomized trial that targeted low-birth-weight (LBW) premature infants (N=1,082), were estimated. Children in the treatment group were offered high-quality center-based care in their 2nd and 3rd years of life (full-day care, 50 weeks per year). High-dosage effects were estimated with a new methodology that found a matched comparison group within the foll…
An Extension and Test of Converse’s “Black-and-White” Model of Response Stability
In one of the most influential works in the public opinion literature, Philip Converse proposed a “black-and-white” model that divided respondents into two groups: opinion holders and unstable opinion changers. We extend the model by allowing for a group that makes rational opinion changes over time. This enables us to (1) explore hypotheses about the adequacy of Converse’s original model, (2) estimate the percentage of the population that belong…
Classification by Opinion-Changing Behavior
We illustrate the use of a class of statistical models, finite mixture models, that can be used to allow for differences in model parameterizations across groups, even in the absence of group labels. We also introduce a methodology for fitting these models, data augmentation. Neither finite mixture models nor data augmentation is routine in the world of political science methodology, but both are quite standard in the statistical literature. The …
Bias Amplification and Bias Unmasking
In the analysis of causal effects in non-experimental studies, conditioning on observable covariates is one way to try to reduce unobserved confounder bias. However, a developing literature has shown that conditioning on certain covariates may increase bias, and the mechanisms underlying this phenomenon have not been fully explored. We add to the literature on bias-increasing covariates by first introducing a way to decompose omitted variable bia…
Development and Assessment of the Effectiveness of an Undergraduate General Education Foreign Language Requirement
This article describes a faculty‐led, multiyear process of formulating learning objectives and assessing the effectiveness of a foreign language requirement for all College of Arts and Sciences undergraduates at a research university. Three interrelated research questions were addressed: (1) What were the levels and patterns of language courses completed under the language requirement compared to those under the previous curriculum? (2) To what e…
New technology, new pedagogy? Employing video podcasts in learning and teaching about exotic ecosystems
This paper examines the experiences of undergraduate university students in response to the employment of video podcasts to support learning and teaching about exotic ecosystems. Six, 15–20‐minute podcasts were made accessible to students through a virtual learning environment, either online or to download to mobile technology. The students were free to watch the podcasts whenever and wherever they chose to. The perceived and actual effectiveness…
A Broader Template for Analyzing Broken Randomized Experiments
Randomized experiments suffering from missing data and noncompliance are a recurring problem for experimenters whose subjects are human. Until recently, analysts of such broken randomized experiments were largely forced to squeeze the data into the idealized template of the randomized experiment with neither noncompliance nor missing data. Such practices necessitate throwing away information and making strong, and often unwarranted, assumptions. …
A Broader Template for Analyzing Broken Randomized Experiments
Randomized experiments suffering from missing data and noncompliance are a recurring problem for experimenters whose subjects are human. Until recently, analysts of such broken randomized experiments were largely forced to squeeze the data into the idealized template of the randomized experiment with neither noncompliance nor missing data. Such practices necessitate throwing away information and making strong, and often unwarranted, assumptions. …
An Extension and Test of Converse’s “Black-and-White” Model of Response Stability
In one of the most influential works in the public opinion literature, Philip Converse proposed a “black-and-white” model that divided respondents into two groups: opinion holders and unstable opinion changers. We extend the model by allowing for a group that makes rational opinion changes over time. This enables us to (1) explore hypotheses about the adequacy of Converse’s original model, (2) estimate the percentage of the population that belong…
Classification by Opinion-Changing Behavior
We illustrate the use of a class of statistical models, finite mixture models, that can be used to allow for differences in model parameterizations across groups, even in the absence of group labels. We also introduce a methodology for fitting these models, data augmentation. Neither finite mixture models nor data augmentation is routine in the world of political science methodology, but both are quite standard in the statistical literature. The …
Sustained effects of high participation in an early intervention for low-birth-weight premature infants
Effects of high participation in the Infant Health and Development Program (IHDP), an 8-site randomized trial that targeted low-birth-weight (LBW) premature infants (N=1,082), were estimated. Children in the treatment group were offered high-quality center-based care in their 2nd and 3rd years of life (full-day care, 50 weeks per year). High-dosage effects were estimated with a new methodology that found a matched comparison group within the foll…
Maternal Employment and Child Development
The employment rate for mothers with young children has increased dramatically over the past 25 years. Estimating the effects of maternal employment on children's development is challenged by selection bias and the missing data endemic to most policy research. To address these issues, this study uses propensity score matching and multiple imputation. The authors compare outcomes across 4 maternal employment patterns: no work in first 3 years post…
Bayesian Nonparametric Modeling for Causal Inference
Researchers have long struggled to identify causal effects in nonexperimental settings. Many recently proposed strategies assume ignorability of the treatment assignment mechanism and require fitting two models—one for the assignment mechanism and one for the response surface. This article proposes a strategy that instead focuses on very flexibly modeling just the response surface using a Bayesian nonparametric modeling procedure, Bayesian Additi…
New technology, new pedagogy? Employing video podcasts in learning and teaching about exotic ecosystems
This paper examines the experiences of undergraduate university students in response to the employment of video podcasts to support learning and teaching about exotic ecosystems. Six, 15–20‐minute podcasts were made accessible to students through a virtual learning environment, either online or to download to mobile technology. The students were free to watch the podcasts whenever and wherever they chose to. The perceived and actual effectiveness…
Development and Assessment of the Effectiveness of an Undergraduate General Education Foreign Language Requirement
This article describes a faculty‐led, multiyear process of formulating learning objectives and assessing the effectiveness of a foreign language requirement for all College of Arts and Sciences undergraduates at a research university. Three interrelated research questions were addressed: (1) What were the levels and patterns of language courses completed under the language requirement compared to those under the previous curriculum? (2) To what e…
Bias Amplification and Bias Unmasking
In the analysis of causal effects in non-experimental studies, conditioning on observable covariates is one way to try to reduce unobserved confounder bias. However, a developing literature has shown that conditioning on certain covariates may increase bias, and the mechanisms underlying this phenomenon have not been fully explored. We add to the literature on bias-increasing covariates by first introducing a way to decompose omitted variable bia…
Chronosequences of ant nest mounds from glacier forelands of Jostedalsbreen, southern Norway
Red wood ant nest mounds were investigated on terrain deglaciated since the mid-18th century at three outlet glaciers of the Jostedalsbreen ice cap in southern Norway. Chronosequence methodology was combined with a geo-ecological approach in the context of autecology. Size and composition of 168 mounds, most of which belonged to Formica lugubris, were related to terrain age, vegetation characteristics and physical habitat types using non-metric m…
Age and development of active cryoplanation terraces in the alpine permafrost zone at Svartkampan, Jotunheimen, southern Norway
Schmidt-hammer exposure-age dating (SHD) of boulders on cryoplanation terrace treads and associated bedrock cliff faces revealed Holocene ages ranging from 0 ± 825 to 8890 ± 1185 yr. The cliffs were significantly younger than the inner treads, which tended to be younger than the outer treads. Radiocarbon dates from the regolith of 3854 to 4821 cal yr BP (2σ range) indicated maximum rates of cliff recession of ~0.1 mm/yr, which suggests the onset …
A comprehensive exposure-age dating approach to interpreting complex glacial and periglacial landscapes
Our aim was to use two exposure dating techniques in combination to understand the age and development of the full complement of glacial and periglacial landforms in the Alnesdalen drainage basin, southern Norway. This required the development of a comprehensive, landscape-scale approach based on 32 10 Be dates from 9 landforms and 121 Schmidt-hammer dates from 106 landforms, which identified a palimpsest landscape consisting of a mosaic of landf…
Psychology (7 works) · Computer Science (6 works) · Mathematics (5 works) · Statistics (5 works) · Econometrics (4 works) · Advanced Causal Inference Techniques (3 works) · Machine learning (3 works) · Medicine (3 works) · Statistical Methods and Bayesian Inference (3 works) · Artificial Intelligence (2 works)