James L Powell
Biographic Data
| ID | 3960634 |
|---|---|
| NAME | James L Powell |
| GIVEN NAMES | James L |
| FAMILY NAME | Powell |
| SIGNATURE | POWELL J L |
| AFFILIATIONS | University of Southern California |
| ORCID | 0000-0002-8362-6863 |
| VERIFIED | Yes |
| TOTAL WORKS | 13 |
| TOTAL CITATIONS | 9 |
| WORKS AS AUTHOR | 13 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1984 |
| LATEST PUBLICATION YEAR | 2024 |
| H-INDEX | 2 |
Data vs. Derision
Throughout the history of science, novel ideas that diverge from mainstream thought have often been met with condemnation, derision, and ad hominem attacks. These reactions have sometimes led to the premature rejection of such ideas, only for them to be later revived and even accepted as the prevailing paradigm. While robust debate is essential in science, the use of derogatory language is unethical, for it discourages research on existing hypoth…
Peer review and the pillar of salt
Peer review has long been regarded as the gold standard of scientific publication, essential to the integrity of science itself. But, as any publishing scientist knows, peer review has its downside, including long delays and reviewer bias. Until the coming of the Internet, there appeared to be no alternative. Now, articles appear online as preprints almost immediately upon submission. But they lack peer review and thus their scientific standing c…
Scientists Unanimous on Anthropogenic Global Warming in 2019
Simple Estimators for Invertible Index Models
This article considers estimation of the unknown linear index coefficients of a model in which a number of nonparametrically identified reduced form parameters are assumed to be smooth and invertible function of one or more linear indices. The results extend the previous literature by allowing the number of reduced form parameters to exceed the number of indices (i.e., the indices are “overdetermined” by the reduced form parameters. The estimator…
Rejoinder for “Simple Estimators for Invertible Index Models”
"Rejoinder for “Simple Estimators for Invertible Index Models”." Journal of Business & Economic Statistics, 36(1), pp. 22–23
The role of perceptions versus instrumented data of environmental change
Scientists Reach 100% Consensus on Anthropogenic Global Warming
The consensus among research scientists on anthropogenic global warming has grown to 100%, based on a review of 11,602 peer-reviewed articles on “climate change” and “global warming” published in the first 7 months of 2019
Identification and Asymptotic Approximations
In empirical economics, the size and quality of datasets and computational power has grown substantially, along with the size and complexity of the econometric models and the population parameters of interest. With more and better data, it is natural to expect to be able to answer more subtle questions about population relationships, and to pay more attention to the consequences of misspecification of the model for the empirical conclusions. Much…
The Consensus on Anthropogenic Global Warming Matters
Skuce et al., responding to Powell, title their article, “Does It Matter if the Consensus on Anthropogenic Global Warming Is 97% or 99.99%?” I argue that the extent of the consensus does matter, most of all because scholars have shown that the stronger the public believe the consensus to be, the more they support the action on global warming that human society so desperately needs. Moreover, anyone who knows that scientists once thought that the …
Climate Scientists Virtually Unanimous
The extent of the consensus among scientists on anthropogenic global warming (AGW) has the potential to influence public opinion and the attitude of political leaders and thus matters greatly to society. The history of science demonstrates that if we wish to judge the level of a scientific consensus and whether the consensus position is likely to be correct, the only reliable source is the peer-reviewed literature. During 2013 and 2014, only 4 of…
Creative Universities and Their Creative City-Regions
Salford University led and coordinated a thematic network known as C 5 U, which involved a consortium of seven European universities. This was part of a European University Association (EUA)/Socrates programme of work known as ‘Creativity in Higher Education’. The aim was to understand how universities were increasingly seeking to be creative in their relationships with their cities and regions. The consortium identified how universities had cont…
Semiparametric Censored Regression Models
When data are censored, ordinary least squares regression can provide biased coefficient estimates. Maximum likelihood approaches to this problem are valid only if the error distribution is correctly specified, which can be problematic in practice. We review several semiparametric estimators for the censored regression model that do not require parameterization of the error distribution. These estimators are used to examine changes in black-white…
Least absolute deviations estimation for the censored regression model
Semiparametric Censored Regression Models
When data are censored, ordinary least squares regression can provide biased coefficient estimates. Maximum likelihood approaches to this problem are valid only if the error distribution is correctly specified, which can be problematic in practice. We review several semiparametric estimators for the censored regression model that do not require parameterization of the error distribution. These estimators are used to examine changes in black-white…
Identification and Asymptotic Approximations
In empirical economics, the size and quality of datasets and computational power has grown substantially, along with the size and complexity of the econometric models and the population parameters of interest. With more and better data, it is natural to expect to be able to answer more subtle questions about population relationships, and to pay more attention to the consequences of misspecification of the model for the empirical conclusions. Much…
The role of perceptions versus instrumented data of environmental change
Least absolute deviations estimation for the censored regression model
Semiparametric Censored Regression Models
When data are censored, ordinary least squares regression can provide biased coefficient estimates. Maximum likelihood approaches to this problem are valid only if the error distribution is correctly specified, which can be problematic in practice. We review several semiparametric estimators for the censored regression model that do not require parameterization of the error distribution. These estimators are used to examine changes in black-white…
Creative Universities and Their Creative City-Regions
Salford University led and coordinated a thematic network known as C 5 U, which involved a consortium of seven European universities. This was part of a European University Association (EUA)/Socrates programme of work known as ‘Creativity in Higher Education’. The aim was to understand how universities were increasingly seeking to be creative in their relationships with their cities and regions. The consortium identified how universities had cont…
Climate Scientists Virtually Unanimous
The extent of the consensus among scientists on anthropogenic global warming (AGW) has the potential to influence public opinion and the attitude of political leaders and thus matters greatly to society. The history of science demonstrates that if we wish to judge the level of a scientific consensus and whether the consensus position is likely to be correct, the only reliable source is the peer-reviewed literature. During 2013 and 2014, only 4 of…
The Consensus on Anthropogenic Global Warming Matters
Skuce et al., responding to Powell, title their article, “Does It Matter if the Consensus on Anthropogenic Global Warming Is 97% or 99.99%?” I argue that the extent of the consensus does matter, most of all because scholars have shown that the stronger the public believe the consensus to be, the more they support the action on global warming that human society so desperately needs. Moreover, anyone who knows that scientists once thought that the …
Scientists Reach 100% Consensus on Anthropogenic Global Warming
The consensus among research scientists on anthropogenic global warming has grown to 100%, based on a review of 11,602 peer-reviewed articles on “climate change” and “global warming” published in the first 7 months of 2019
Identification and Asymptotic Approximations
In empirical economics, the size and quality of datasets and computational power has grown substantially, along with the size and complexity of the econometric models and the population parameters of interest. With more and better data, it is natural to expect to be able to answer more subtle questions about population relationships, and to pay more attention to the consequences of misspecification of the model for the empirical conclusions. Much…
Simple Estimators for Invertible Index Models
This article considers estimation of the unknown linear index coefficients of a model in which a number of nonparametrically identified reduced form parameters are assumed to be smooth and invertible function of one or more linear indices. The results extend the previous literature by allowing the number of reduced form parameters to exceed the number of indices (i.e., the indices are “overdetermined” by the reduced form parameters. The estimator…
Rejoinder for “Simple Estimators for Invertible Index Models”
"Rejoinder for “Simple Estimators for Invertible Index Models”." Journal of Business & Economic Statistics, 36(1), pp. 22–23
The role of perceptions versus instrumented data of environmental change
Scientists Unanimous on Anthropogenic Global Warming in 2019
Peer review and the pillar of salt
Peer review has long been regarded as the gold standard of scientific publication, essential to the integrity of science itself. But, as any publishing scientist knows, peer review has its downside, including long delays and reviewer bias. Until the coming of the Internet, there appeared to be no alternative. Now, articles appear online as preprints almost immediately upon submission. But they lack peer review and thus their scientific standing c…
Data vs. Derision
Throughout the history of science, novel ideas that diverge from mainstream thought have often been met with condemnation, derision, and ad hominem attacks. These reactions have sometimes led to the premature rejection of such ideas, only for them to be later revived and even accepted as the prevailing paradigm. While robust debate is essential in science, the use of derogatory language is unethical, for it discourages research on existing hypoth…
Atmospheric and Environmental Gas Dynamics (5 works) · Climate change (5 works) · Economics (5 works) · Estimator (5 works) · Mathematics (5 works) · Statistics (5 works) · Climate Change Communication and Perception (4 works) · Econometrics (4 works) · Global warming (4 works) · Political science (4 works)