208,821 research outputs found

    I, NEURON: the neuron as the collective

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    Purpose – In the last half-century, individual sensory neurons have been bestowed with characteristics of the whole human being, such as behavior and its oft-presumed precursor, consciousness. This anthropomorphization is pervasive in the literature. It is also absurd, given what we know about neurons, and it needs to be abolished. This study aims to first understand how it happened, and hence why it persists. Design/methodology/approach – The peer-reviewed sensory-neurophysiology literature extends to hundreds (perhaps thousands) of papers. Here, more than 90 mainstream papers were scrutinized. Findings – Anthropomorphization arose because single neurons were cast as “observers” who “identify”, “categorize”, “recognize”, “distinguish” or “discriminate” the stimuli, using math-based algorithms that reduce (“decode”) the stimulus-evoked spike trains to the particular stimuli inferred to elicit them. Without “decoding”, there is supposedly no perception. However, “decoding” is both unnecessary and unconfirmed. The neuronal “observer” in fact consists of the laboratory staff and the greater society that supports them. In anthropomorphization, the neuron becomes the collective. Research limitations/implications – Anthropomorphization underlies the widespread application to neurons Information Theory and Signal Detection Theory, making both approaches incorrect. Practical implications – A great deal of time, money and effort has been wasted on anthropomorphic Reductionist approaches to understanding perception and consciousness. Those resources should be diverted into more-fruitful approaches. Originality/value – A long-overdue scrutiny of sensory-neuroscience literature reveals that anthropomorphization, a form of Reductionism that involves the presumption of single-neuron consciousness, has run amok in neuroscience. Consciousness is more likely to be an emergent property of the brain

    The Blind Leading the Blind: Who Gets Polling Information and Does it Improve Decisions?

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    We analyze whether and when polls help citizens to improve their decisions. Specifically, we use experiments to investigate 1) whether and when citizens are willing to obtain polls and 2) whether and when polls help citizens to make better choices than they would have made on their own. We find that citizens are more likely to obtain polls when the decisions they must make are difficult and when they are unsophisticated. Ironically, when the decisions are difficult, the pollees are also uninformed and, therefore, do not provide useful information. We also find that when polls indicate the welfare-improving choice, citizens are able to improve their decisions. However, when polls indicate a choice that will make citizens worse off, citizens make worse decisions than they would have made on their own. These results hold regardless of whether the majority in favor of one option over the other is small or large

    Nothing But the Truth? Experiments on Adversarial Competition, Expert Testimony, and Decision Making

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    Many scholars debate whether a competition between experts in legal, political, or economic contexts elicits truthful information and, in turn, enables people to make informed decisions. Thus, we analyze experimentally the conditions under which competition between experts induces the experts to make truthful statements and enables jurors listening to these statements to improve their decisions. Our results demonstrate that, contrary to game theoretic predictions and contrary to critics of our adversarial legal system, competition induces enough truth telling to allow jurors to improve their decisions. Then, when we impose additional institutions (such as penalties for lying or the threat of verification) on the competing experts, we observe even larger improvements in the experts\u27 propensity to tell the truth and in jurors\u27 decisions. We find similar improvements when the competing experts are permitted to exchange reasons for why their statements may be correct

    Buying equal student achievement opportunities

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    The majority of a school system’s budget is spent on personnel. In order to use this tremendous amount of money efficiently it is important educators understand the impact different spending priorities, specifically total per-pupil expenditures, teacher salary, principal salary, pupil/teacher ratio, and pupil/support personnel ratio have on student achievement and how these inputs are moderated by a district’s population density and wealth. Spending data from all the school divisions in Virginia were examined using public spending data from the Virginia Department of Education, and population density and wealth statistics from the Office of Budget Management, US Census Bureau, and Commonwealth of Virginia Commission on Local Government. Bivariate correlations and linear regression slopes were examined to determine the impact of the main effects and multiple linear regression model building was used to examine how a district’s wealth and population density moderate the effects of per-pupil expenditures, teacher salary, principal salary, pupil/teacher ratio and pupil/support personnel ratio. Teacher salary proved significant for both math and reading scores while principal salary was significant for math scores only. None of the other main effects had a significant impact on student achievement. A division’s status as “rural” by itself proved to be correlated with both reading and math scores. Additionally, wealth by itself was a statistically and practically significant predictor of student achievement regardless of the measurement used highlighting the problems posed for education by economic inequality. When wealth was measured using either median household income or fiscal stress the correlation with student achievement was twice that of composite index indicating composite index may not be the best wealth measurement for the state to use to allocate funding in order to level the playing field. Further research is needed to determine how spending effects overall school climate, how the adverse impact of wealth can be overcome, and if making changes to the wealth measurement used will help to overcome the impact of wealth on student achievement

    Performance Pressure and Resource Allocation in Washington

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    Based on interviews with state, district, and school officials, explores how performance pressures have changed resource allocation decisions. Examines reform goals and how Washington's finance system impedes efforts to link resources to student learning

    Charting the Course: Four Years of the Thomas W. Payzant School on the Move Prize

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    Every spring since 2006, EdVestors (www.edvestors.org) invites Boston Public schools with 4-year rates of improvement on the Massachusetts Comprehensive Assessment System (MCAS) tests that are significantly (50% or more) greater than the district average to apply for a $100,000 School on the Move Prize (SOM). Since the creation of the Prize, the Rennie Center for Education Research & Policy has served as EdVestors' research partner, identifying and documenting lessons from the winning schools. This report draws upon the previous SOM case studies produced by the Rennie Center, along with interviews with school leaders, staff and students. The study identifies common themes across all four winning schools that describe the structures and strategies put in place to better serve students, as well as some of the opportunities and barriers the schools have faced in sustaining their success since winning the award. Finally, the study highlights some key lessons the leaders of these four schools view as critical to implementing the strategies and practices outlined to support students and improve outcomes.Over the past four years, a diverse group of schools have emerged as winners, including two pilot schools -- one a high school and the other an elementary school -- a traditional K-8 school and a small high school occupying one floor of the South Boston Education Complex. These schools also represent the diverse neighborhoods in Boston, including Dorchester, Roxbury, Brighton, and South Boston. Despite differences in structure, governance and grades served, all four winning schools do share some similar characteristics. First, they all experienced significant structural changes in the immediate years prior to winning the SOM Prize that provided an opportunity for reflection and strategic planning. Second, they are all relatively small schools with lower enrollments than most comparable schools with the same grade configurations in the district. Third, they are all led by experienced educators who are strong leaders with deep knowledge of the Boston Public School system. Finally, they all share common practices that have been critical to their success in improving student achievement, including: Shared Leadership -- Shared Learning: Distributed leadership grounded in shared accountability between administrators and teachers toward a goal of instructional excellence and increased student achievement; Data-driven Instruction: Intentional systems to use data to drive decisions about curriculum, instruction and student supports; andAcademic Rigor and Student Support: A student-centered approach that balances high academic expectations with integrated academic and developmental supports targeted to student needs

    Teaching teenagers in finance: does it work?

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    Many initiatives worldwide aim at improving financial literacy through targeted education programs, yet there is little evidence regarding their effectiveness. We examine the impact of a short financial education program on teenagers in German high schools. Our findings reveal that the training program significantly increases teenagers' interest in financial matters and their financial knowledge, especially their ability to properly assess the riskiness of assets. Behaviorally, we observe a decrease in the prevalence of self-reported impulse purchases, but at the same time find no evidence of a significant increase in savings. Our data reveals strong gender differences already before adulthood: Girls show less interest in, and self-assessed knowledge of, financial matters, and are less likely to save

    End It, Don't Mend It: What to Do with No Child Left Behind

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    The looming expiration of the federal No Child Left Behind Act has prompted a flood of commission reports, studies, and punditry. Virtually all of those analyses have assumed that the law should and will be reauthorized, disagreeing only over how it should be revised. They have accepted the law's premises without argument: that government-imposed standards and bureaucratic "accountability" are effective mechanisms for improving American education and that Congress should be involved in their implementation. In this paper, we put those preconceptions under a microscope and subject NCLB to a thorough review. We explore its effectiveness to date and ask whether its core principles are sound. We find that No Child Left Behind has been ineffective in achieving its intended goals, has had negative unintended consequences, is incompatible with policies that do work, is at the mercy of a political process that can only worsen its prospects, and is based on premises that are fundamentally flawed. We further conclude that NCLB oversteps the federal government's constitutional limits -- treading on a responsibility that, by law and tradition, is reserved to the states and the people. We therefore recommend that NCLB not be reauthorized and that the federal government return to its constitutional bounds by ending its involvement in elementary and secondary education

    Impatience and Uncertainty: Experimental Decisions Predict Adolecents' Field Behavior

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    We study risk attitudes, ambiguity attitudes, and time preferences of 661 children and adolescents, aged ten to eighteen years, in an incentivized experiment. We relate experimental choices to field behavior. Experimental measures of impatience are found to be significant predictors of health related field behavior and saving decisions. In particular, more impatient children and adolescents are more likely to spend money on alcohol and cigarettes, have a higher body mass index (BMI) and are less likely to save money. Experimental measures for risk and ambiguity attitudes are only weak predictors of field behavior

    Competition in the Courtroom: When Does Expert Testimony Improve Jurors’ Decisions?

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    Many scholars lament the increasing complexity of jury trials and question whether the testimony of competing experts helps unsophisticated jurors to make informed decisions. In this article, we analyze experimentally the effects that the testimony of competing experts has on (1) sophisticated versus unsophisticated subjects\u27 decisions and (2) subjects\u27 deci- sions on difficult versus easy problems. Our results demonstrate that competing expert testimony, by itself, does not help unsophisticated subjects to behave as though they are sophisticated, nor does it help subjects make comparable decisions on difficult and easy problems. When we impose additional institutions (such as penalties for lying or a threat of verification) on the competing experts, we observe such dramatic improvements in unso- phisticated subjects\u27 decisions that the gap between their decisions and those of sophisti- cated subjects closes. We find similar results when the competing experts exchange reasons for why their statements may be correct. However, additional institutions and the experts\u27 exchange of reasons are less effective at closing the gap between subjects\u27 decisions on difficult versus easy problems
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