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2018

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Articles 2701 - 2730 of 22831

Full-Text Articles in Social and Behavioral Sciences

Whole-Of-Society Approach Needed Against Truth Decay, Eugene K. B. Tan Nov 2018

Whole-Of-Society Approach Needed Against Truth Decay, Eugene K. B. Tan

Research Collection Yong Pung How School Of Law

In an age of pervasive informationflows, governments do not defeat fake news. It's the people as a society whodo.The threatof deliberate falsehoods, or more popularly "fake news", posesserious threats to the democratic wellbeing of societies. The marketplace ofideas increasingly suffers from truth decay, propagated online or offline,imperilling an already vulnerable information ecosystem. In turn,this compromises the functioning of a democracy, which is premised on citizenshaving a shared reality rather than multiple distorted realities.

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Premature Service Of Payment Claims Under The Building And Construction Industry Security Of Payment Act: Audi Construction Pte Ltd V Kian Hiap Construction Pte Ltd, Benjamin Joshua Ong Nov 2018

Premature Service Of Payment Claims Under The Building And Construction Industry Security Of Payment Act: Audi Construction Pte Ltd V Kian Hiap Construction Pte Ltd, Benjamin Joshua Ong

Research Collection Yong Pung How School Of Law

In Audi Construction Pte Ltd v Kian Hiap Construction Pte Ltd, the Singapore Court of Appeal considereda payment claim to have been validly served although it was served earlier thanthe contractually stipulated date. This was because the service of the paymentclaim was “effective” only from the contractually stipulated date, and theclaimant had had a “good reason” to serve the payment claim early. This notecritically examines the reasoning in Audi vis-à-vis the existing law, the principleof freedom of contract, and the intentions of the parties in that case. In theabsence of future judicial elaboration on the “effective service” and “goodreason” doctrines, …

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Disruptive Technologies And Sustainable Development: Implications For Southeast Asia, Ching-Fu Lin, Han-Wei Liu Nov 2018

Disruptive Technologies And Sustainable Development: Implications For Southeast Asia, Ching-Fu Lin, Han-Wei Liu

Research Collection Yong Pung How School Of Law

Disruptive technologies, including artificial intelligence, distributed ledger technologies, and the internet of things, are driving a transformative reorganisation of economic structures. If correctly harnessed, these emerging technologies have the potential to assist economies in creating new efficiencies, boosting productivity, and enhancing international trade. This paper explores the scope for these technologies to contribute to sustainable development, highlighting how they could be deployed and implications for Cambodia, Lao PDR, Myanmar, and Vietnam.

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The Great Recession And The Destruction Of Minority Wealth, Douglas S. Massey, Jacob S. Rugh Nov 2018

The Great Recession And The Destruction Of Minority Wealth, Douglas S. Massey, Jacob S. Rugh

Faculty Publications

It seems obvious now, but there was a time when social scientists paid little attention to wealth as a factor in America's system of racial stratification. For many years, researchers focused primarily on black-white differentials in education, employment, and earnings; and in these dimensions progress was clearly being made. From 1963 (just before the passage of major civil rights legislation) to 2001 (just after the economic boom of the 1990s), the ratio of black-to-white median household income rose from 33 percent to 64 percent. Over the same period, the black-white ratio for high school graduates climbed from 51% to 89%, …

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Revisiting The Foundations Of Dominant-Strategy Mechanisms, Yi-Chun Chen, Jiangtao Li Nov 2018

Revisiting The Foundations Of Dominant-Strategy Mechanisms, Yi-Chun Chen, Jiangtao Li

Research Collection School Of Economics

An important question in mechanism design is whether there is any theoretical foundation for the use of dominant-strategy mechanisms. This paper studies the maxmin and Bayesian foundations of dominant-strategy mechanisms in general social choice environments with quasi-linear preferences and private values. We propose a condition called the uniform shortest-path tree that, under regularity, ensures the foundations of dominant-strategy mechanisms. This exposes the underlying logic of the existence of such foundations in the single-unit auction setting, and extends the argument to cases where it was hitherto unknown. To prove this result, we adopt the linear programming approach to mechanism design. In …

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The Grid Bootstrap For Continuous Time Models, Yiu Lim Lui, Weilin Xiao, Jun Yu Nov 2018

The Grid Bootstrap For Continuous Time Models, Yiu Lim Lui, Weilin Xiao, Jun Yu

Research Collection School Of Economics

This paper considers the grid bootstrap for constructing confidence intervals for the persistence parameter in a class of continuous time models driven by a Levy process. Its asymptotic validity is established by assuming the sampling interval (h) shrinks to zero. Its improvement over the in-fill asymptotic theory is achieved by expanding the coefficient-based statistic around its in fill asymptotic distribution which is non-pivotal and depends on the initial condition. Monte Carlo studies show that the gird bootstrap method performs better than the in-fill asymptotic theory and much better than the long-span theory. Empirical applications to U.S. interest rate data highlight …

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Potential Crime Risk And Housing Market Responses, Seonghoon Kim, Kwan Ok Lee Nov 2018

Potential Crime Risk And Housing Market Responses, Seonghoon Kim, Kwan Ok Lee

Research Collection School Of Economics

We study how information on local (dis)amenities is transmitted and manifested in housing markets. Using nationwide data on multifamily homes in South Korea, we analyze heterogeneity in the effect of a sex offender's presence on sale prices and rents of nearby homes. Our results demonstrate that the price effect of the offender's move-in varies significantly by spatial context. People react more strongly and persistently to the move-in of the offender in places wherein indicators of social connectedness are stronger, such as places with relatively low population density. We also find that, unlike housing prices, rents do not change in response …

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Identifying Latent Grouped Patterns In Cointegrated Panels, Wenxin Huang, Sainan Jin, Liangjun Su Nov 2018

Identifying Latent Grouped Patterns In Cointegrated Panels, Wenxin Huang, Sainan Jin, Liangjun Su

Research Collection School Of Economics

We consider a panel cointegration model with latent group structures that allows for heterogeneous long-run relationships across groups. We extend Su, Shi, and Phillips’ (2016) classifier-Lasso (C-Lasso) method to the nonstationary panels and allow for the presence of endogeneity in both the stationary and nonstationary regressors in the model. In addition, we allow the dimension of the stationary regressors to diverge with the sample size. We show that we can identify the individuals’ group membership and estimate the group-specific long-run cointegrated relationships simultaneously. We demonstrate the desirable property of uniform classification consistency and the oracle properties of both the C-Lasso …

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Change Detection And The Causal Impact Of The Yield Curve, Shuping Shi, Peter C. B. Phillips, Stan Hurn Nov 2018

Change Detection And The Causal Impact Of The Yield Curve, Shuping Shi, Peter C. B. Phillips, Stan Hurn

Research Collection School Of Economics

Causal relationships in econometrics are typically based on the concept of predictability and are established by testing Granger causality. Such relationships are susceptible to change, especially during times of financial turbulence, making the real-time detection of instability an important practical issue. This article develops a test for detecting changes in causal relationships based on a recursive evolving window, which is analogous to a procedure used in recent work on financial bubble detection. The limiting distribution of the test takes a simple form under the null hypothesis and is easy to implement in conditions of homoskedasticity and conditional heteroskedasticity of an …

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Threshold Regression Asymptotics: From The Compound Poisson Process To Two-Sided Brownian Motion, Ping Yu, Peter C. B. Phillips Nov 2018

Threshold Regression Asymptotics: From The Compound Poisson Process To Two-Sided Brownian Motion, Ping Yu, Peter C. B. Phillips

Research Collection School Of Economics

The asymptotic distribution of the least squares estimator in threshold regression is expressed in terms of a compound Poisson process when the threshold effect is fixed and as a functional of two-sided Brownian motion when the threshold effect shrinks to zero. This paper explains the relationship between this dual limit theory by showing how the asymptotic forms are linked in terms of joint and sequential limits. In one case, joint asymptotics apply when both the sample size diverges and the threshold effect shrinks to zero, whereas sequential asymptotics operate in the other case in which the sample size diverges first …

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Labour Research Conference 2018: Upskilling Of Mature Workers, Stephen Hoskins, Luca Facchinello Nov 2018

Labour Research Conference 2018: Upskilling Of Mature Workers, Stephen Hoskins, Luca Facchinello

Research Collection School Of Economics

Many developed countries are approaching an era of ageing population due to an increase in longevity and decrease in fertility rates. Singapore is no exception, having one of the fastest ageing populations in Asia, which is driven by low fertility rates and the third longest life expectancy in the world. The number of elderly citizens, defined as those aged 65 and above, is expected to triple to 900,000 by 2030, making up about 28% of the total population in Singapore (Population SG, 2016). This changing population age profile, combined with a competitive labour market, means it makes business sense to …

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The Impact Of In-House Unnatural Death On Property Values: Evidence From Hong Kong, Zheng Chang, Jing Li Nov 2018

The Impact Of In-House Unnatural Death On Property Values: Evidence From Hong Kong, Zheng Chang, Jing Li

Research Collection School Of Economics

The occurrence of in-house unnatural death could negatively affect the value of housing property. This study evaluates the geographic and temporal scope of the impact of unnatural death on property values in Hong Kong. By exploiting the spatial and intertemporal variation of the shock in a difference-in-differences approach, we find significant negative externalities of unnatural death incidence on neighborhood housing values. On average, units in which an unnatural death occurred experience a 25% drop in value following the death. Nearby units on the same floor also show a significant price drop of 4.5%. Prices of units on other floors of …

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Low Power Individuals In Social Power Research: A Quantitative Review, Theoretical Framework, And Empirical Test, Michael Schaerer, Christilene Du Plessis, Andy J. Yap, Stefan Thau Nov 2018

Low Power Individuals In Social Power Research: A Quantitative Review, Theoretical Framework, And Empirical Test, Michael Schaerer, Christilene Du Plessis, Andy J. Yap, Stefan Thau

Research Collection Lee Kong Chian School Of Business

We examine the role of low-power individuals in social power research. A multi-method literature review reveals that low-power individuals may be insufficiently understood because many studies lack necessary control conditions that allow drawing inferences about low power, effects are predominantly attributed to high power, and qualitative reviews primarily focus on how high-power individuals feel, think, and behave. Challenging the assumption that low power tends to produce opposite consequences of high power, we highlight several similarities between the two states. Based on social exchange theories, we propose that unequal-power (vs. equal-power) relationships make instrumental goals, competitive attitudes, and exchange rules salient, …

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How Sending E-Mails Compares With Carbon Emission Of Car Use, Thomas Menkhoff Nov 2018

How Sending E-Mails Compares With Carbon Emission Of Car Use, Thomas Menkhoff

Research Collection Lee Kong Chian School Of Business

Digitalnatives can reduce their carbon footprint by being conscious about Internetusage. Everwondered how your e-mails may contribute to your personal carbon footprint? Accordingto estimates published in Phys.org, sending a short e-mail adds about 4g of CO2equivalent (gCO2e) to the atmosphere (an e-mail with a long attachment has atenfold carbon footprint, that is 50 gCO2e.

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On Strategy-Proofness And The Salience Of Single-Peakedness, Shurojit Chatterji, Jordi Masso Nov 2018

On Strategy-Proofness And The Salience Of Single-Peakedness, Shurojit Chatterji, Jordi Masso

Research Collection School Of Economics

We consider strategy-proof social choice functions operating on a rich domain of preference profiles. We show that if the social choice function satisfies in addition tops-onlyness, anonymity and unanimity then the preferences in the domain have to satisfy a variant of single-peakedness (referred to as semilattice single-peakedness). We do so by deriving from the social choice function an endogenous partial order (a semilattice) from which the notion of a semilattice single-peaked preference can be defined. We also provide a converse of this main finding. Finally, we show how well-known restricted domains under which nontrivial strategy-proof social choice functions are admissible …

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News Co-Occurrence, Attention Spillover, And Return Predictability, Li Guo, Lin Peng, Yubo Tao, Jun Tu Nov 2018

News Co-Occurrence, Attention Spillover, And Return Predictability, Li Guo, Lin Peng, Yubo Tao, Jun Tu

Research Collection School Of Economics

We examine the effect of investor attention spillover on stock return predictability. Using a novel measure, the News Network Triggered Attention index (NNTA), we find that NNTA negatively predicts market returns with a monthly in(out)-of-sample R-square of 5.97% (5.80%). In the cross-section, a long-short portfolio based on news co-occurrence generates a significant monthly alpha of 68 basis points. The results are robust to the inclusion of alternative attention proxies, sentiment measures, other news- and information-based predictors, across recession and expansion periods. We further validate the attention spillover effect by showing that news co-mentioning leads to greater increases in Google and …

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Estimating Switching Costs With Market Share Data: An Application To Medicare Part D, Jung Won Yeo, Daniel P. Miller Nov 2018

Estimating Switching Costs With Market Share Data: An Application To Medicare Part D, Jung Won Yeo, Daniel P. Miller

Research Collection School Of Economics

Choice inertia and switching frictions are well-documented features of the demand for health insurance. In this paper, we estimate switching costs in the Medicare Part D market with aggregate market share data using standard discrete choice models for differentiated products. We consider various modelling assumptions: myopic and forward-looking consumers, and with and without random coefficients. Both myopic and forward-looking consumer models with no random coefficients yield switching cost estimates that closely match the actual average switching frequency, with implied dollar-valued switching costs of $1600 to $2000. We find the inclusion of random coefficients to the myopic consumer model results in …

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Assessing The Effects Of Post-Crisis Regulatory Reforms On Liquidity In The Singapore Government Securities And Mas Bills Market, John M. Sequeira Nov 2018

Assessing The Effects Of Post-Crisis Regulatory Reforms On Liquidity In The Singapore Government Securities And Mas Bills Market, John M. Sequeira

Research Collection Lee Kong Chian School Of Business

The FSB initiated in 2017 an evaluation of the effects of post-crisis regulatory reforms, by developing a framework to assess whether the reforms are achieving their intended outcomes and identify any material unintended consequences. In tandem, MAS established an evaluation framework, which covers four broad impact areas, comprising FIs, financial markets, financial end-users and the broader financial landscape. Internationally, there have been particular concerns over whether post-crisis reforms may have impaired liquidity conditions in specific financial markets. We provide an assessment of the effects of the reforms on liquidity in a key market in Singapore, the SGS and MAS bills …

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Oprm1 Genotype Interacts With Serotonin System Dysfunction To Predict Alcohol-Heightened Aggression In Primates, Carlos A. Driscoll, Stephen G. Lindell, Melanie L. Schwandt, Stephen J. Suomi, J. Dee Higley, Markus Heilig, Christina S. Barr Nov 2018

Oprm1 Genotype Interacts With Serotonin System Dysfunction To Predict Alcohol-Heightened Aggression In Primates, Carlos A. Driscoll, Stephen G. Lindell, Melanie L. Schwandt, Stephen J. Suomi, J. Dee Higley, Markus Heilig, Christina S. Barr

Faculty Publications

Although the notion that alcohol promotes violence is widespread, not all individuals are aggressive while intoxicated. Genetic variation could be a contributing factor to individual differences in alcohol-heightened aggression. The present study examines the effects of OPRM1C77G genotype on responses to threat in rhesus macaques under normal conditions and following alcohol administration. Prior studies have shown that a low CSF level of 5-HIAA is a trait marker for individuals prone to escalated aggression. We wanted to examine whether the predictive value for this marker on aggression was moderated by OPRM1 genotype. Animals were administered alcohol (BAC 100-200 mg%), were provoked …

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Where Do Riders Park Dockless, Shared Electric Scooters? Findings From San Jose, California, Kevin Fang, Asha Weinstein Agrawal, Jeremy Steele, John Joseph Hunter, Ashley M. Hooper Nov 2018

Where Do Riders Park Dockless, Shared Electric Scooters? Findings From San Jose, California, Kevin Fang, Asha Weinstein Agrawal, Jeremy Steele, John Joseph Hunter, Ashley M. Hooper

Mineta Transportation Institute

Dockless, shared, electric kick-scooters started popping up on U.S. city streets without warning in 2017. Reaction to the shared scooters came swiftly and strongly. On the one hand, the scooters have proven popular with riders, attracting investment capital and expanding service to additional cities. But others have been less enthusiastic, with a central complaint being how shared scooters are parked.

This perspective explores the extent to which parked shared scooters pose a problem to others on streets, sidewalks, and public spaces, using empirical evidence documenting where scooters have been parked in downtown San Jose, California.

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An Integrative Approach To Investigating Bilingual Advantages In Cognitive Decline: The Australian Longitudinal Study Of Ageing, Wei Xing Toh, Andree Hartanto, Joanne Qin Ying Tan, Hwajin Yang Nov 2018

An Integrative Approach To Investigating Bilingual Advantages In Cognitive Decline: The Australian Longitudinal Study Of Ageing, Wei Xing Toh, Andree Hartanto, Joanne Qin Ying Tan, Hwajin Yang

Research Collection School of Social Sciences

A commentary on “The relationship of bilingualism to cognitive decline: The Australian Longitudinal Study of Ageing” by Mukadam N, Jichi F, Green D, Livingston G (2018). International Journal of Geriatric Psychiatry, 33(2), e249‐e256, .

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Landscapes Of Power: Politics Of Energy In The Navajo Nation, Sayd Randle Nov 2018

Landscapes Of Power: Politics Of Energy In The Navajo Nation, Sayd Randle

Research Collection College of Integrative Studies

Remote, extractive landscapes are often marked by persistent pollution, particularly when the extracted resource in question comes from underground and serves as a source of energy. The toxic legacies of fracking, mountaintop removal and more conventional mining projects are well documented at this point. The disproportionately polluted extractive ‘hinterland’ looms especially large in recent accounts of the rural West of the United States, which tend to emphasize the ways in which these ‘peripheries’ have enabled consumption and prosperity elsewhere (e.g. Kuletz 1998; Needham 2014; Voyles 2015). Dana Powell’s Landscapes of power (2018) moves swiftly beyond a recognition of such patterns …

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Not Just An Ache: Examining The Rate Of Musculoskeletal Pain In City Bus Drivers, Jeremy Steele Nov 2018

Not Just An Ache: Examining The Rate Of Musculoskeletal Pain In City Bus Drivers, Jeremy Steele

Mineta Transportation Institute

This paper examines the rates of musculoskeletal discomfort in a sample of 957 city bus drivers at King County Metro, a public transportation agency serving the greater Seattle area. It also examines how often such pain prevented drivers from doing their normal work, needed treatment from a medical professional, or incited one or more worker’s compensation claims. To assess the level of musculoskeletal discomfort in city bus drivers, an anonymous survey was distributed to drivers at King County Metro, a public transportation agency serving the greater Seattle area. This survey consisted of a Nordic Questionnaire asking drivers whether or not …

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Imaginary People Representing Real Numbers: Generating Personas From Online Social Media Data, Jisun An, Haewoon Kwak, Soongyo Jung, Joni Salminen, M. Admad, Bernard J. Jansen Nov 2018

Imaginary People Representing Real Numbers: Generating Personas From Online Social Media Data, Jisun An, Haewoon Kwak, Soongyo Jung, Joni Salminen, M. Admad, Bernard J. Jansen

Research Collection School Of Computing and Information Systems

We develop a methodology to automate creating imaginary people, referred to as personas, by processing complex behavioral and demographic data of social media audiences. From a popular social media account containing more than 30 million interactions by viewers from 198 countries engaging with more than 4,200 online videos produced by a global media corporation, we demonstrate that our methodology has several novel accomplishments, including: (a) identifying distinct user behavioral segments based on the user content consumption patterns; (b) identifying impactful demographics groupings; and (c) creating rich persona descriptions by automatically adding pertinent attributes, such as names, photos, and personal characteristics. …

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On Incentive Compatible, Individually Rational Public Good Provision Mechanisms, Takashi Kunimoto, Cuiling Zhang Nov 2018

On Incentive Compatible, Individually Rational Public Good Provision Mechanisms, Takashi Kunimoto, Cuiling Zhang

Research Collection School Of Economics

This paper characterizes mechanisms satisfying Bayesian incentive compatibility (BIC) and interim individual rationality (IIR) in the classical public good provision problem. Many papers in the literature obtain the results in the so-called standard model of ex ante identical agents with a continuous, closed interval of types. Although the standard model and more generally a continuum type space are widely used in the literature, it is nonetheless an abstraction of reality. Given that the public good provision problem has occupied a central application in the theory of mechanism design, we propose a "stress test" for the results in the standard model …

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Specification Tests Based On Mcmc Output, Yong Li, Jun Yu, Tao Zeng Nov 2018

Specification Tests Based On Mcmc Output, Yong Li, Jun Yu, Tao Zeng

Research Collection School Of Economics

Two test statistics are proposed to determine model specification after a model is estimated by an MCMC method. The first test is the MCMC version of IOSA test and its asymptotic null distribution is normal. The second test is motivated from the power enhancement technique of Fan et al. (2015). It combines a component (J1) that tests a null point hypothesis in an expanded model and a power enhancement component (J0) obtained from the first test. It is shown that J0 converges to zero when the null model is correctly specified and diverges when the null model is misspecified. Also …

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Estimation Of Large Dimensional Factor Models With An Unknown Number Of Breaks, Shujie Ma, Liangjun Su Nov 2018

Estimation Of Large Dimensional Factor Models With An Unknown Number Of Breaks, Shujie Ma, Liangjun Su

Research Collection School Of Economics

In this paper we study the estimation of a large dimensional factor model when the factor loadingsexhibit an unknown number of changes over time. We propose a novel three-step procedure to detect the breaks if any and then identify their locations. In the first step, we divide the whole time span into subintervals and fit a conventional factor model on each interval. In the second step, we apply the adaptive fused group Lasso to identify intervals containing a break. In the third step, we devise a grid search method to estimate the location of the break on each identified interval. …

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Entrepreneurship, College, And Credit: The Golden Triangle, Roberto M. Samaniego, Juliana Yu Sun Nov 2018

Entrepreneurship, College, And Credit: The Golden Triangle, Roberto M. Samaniego, Juliana Yu Sun

Research Collection School Of Economics

We develop a model to evaluate the aggregate impact of college finance in an environment with entrepreneurship. The calibrated model captures the stylized fact that entrepreneurs with college are more common and more profitable in the United States. The calibration indicates this is mainly because higher labor earnings allow college‐educated agents to ameliorate credit constraints if and when they eventually become entrepreneurs. Changes in financing constraints on entrepreneurs can thus affect college attendance, and changes in financing constraints on college can affect entrepreneurship rates as well.

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Strategic Sequential Bidding For Government Land Auction Sales – Evidence From Singapore, Sumit Agarwal, Jing Li, Ernie Teo, Alan Cheong Nov 2018

Strategic Sequential Bidding For Government Land Auction Sales – Evidence From Singapore, Sumit Agarwal, Jing Li, Ernie Teo, Alan Cheong

Research Collection School Of Economics

This paper studies the extent to which equilibrium auction prices are pushed up sequentially due to strategic bidding behaviors in government land auction sales. Using a unique dataset that covers the universe of tendering prices submitted by all developers for all residential land auction sales in Singapore, we find that a tenderer’s bids are significantly higher where there was a previous land parcel sold within two years and located within four kilometers. The elevated price margin decreases with time and geographic distance. Tracking sequential bids submitted by same developers over time, we find that the incumbent winner of a previous …

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A Comparison Of Verbal And Standard Selection-Based Preferences Using The Multiple Stimulus Without Replacement Method For Children With Developmental Disabilities, Devon Mcmahon Nov 2018

A Comparison Of Verbal And Standard Selection-Based Preferences Using The Multiple Stimulus Without Replacement Method For Children With Developmental Disabilities, Devon Mcmahon

Theses and Dissertations

Since DeLeon and Iwata (1996) published their seminal study on multiple stimulus preference assessments, the research surrounding preference assessments utilizing multiple stimuli has grown immensely. This has led to many variations of DeLeon and Iwata’s (1996) original preference assessment. Variations have included preference assessments conducted with videos, pictures, and activities. We compared the results of a standard tangible multiple stimulus without replacement preference assessment (MSWO) to a verbal multiple stimulus without replacement preference assessment with four individuals with developmental disabilities. A reinforcer assessment was conducted following each preference assessment to assess accuracy. Idiosyncratic results were found across participants. For two …

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