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(29 September 2004)
Abstract
The bestselling text that has been so popular with graduate students and researchers for providing an accessible guide to the application, interpretation, and pitfalls of structural equation modeling (SEM) has now been carefully revised to be even more useful. New to this edition are: * The first SEM text web page, offering free access to data and program syntax files for many of the research examples in the book, electronic overheads that readers can download and print, and links to other useful sites. * Separate chapters that review fundamental ...
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posted to no-tag
by bookwormzz
on 2009-09-04 20:57:48
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posted to freakonomics
by bookwormzz
on 2009-09-04 20:57:17
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posted to placebo
by bookwormzz
on 2009-08-31 18:08:13
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posted to cortex
by bookwormzz
on 2009-08-31 18:07:37
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posted to kurtosis measurement
by bookwormzz
on 2009-07-16 12:04:32
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posted to kurtosis
by bookwormzz
on 2009-07-16 12:03:30
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posted to kurtosis
by bookwormzz
on 2009-07-16 12:02:59
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(20 Aug 2006)
Abstract
Consider testing normality against a one-parameter family of univariate distributions containing the normal distribution as the boundary, e.g., the family of $t$-distributions or an infinitely divisible family with finite variance. We prove that under mild regularity conditions, the sample skewness is the locally best invariant (LBI) test of normality against a wide class of asymmetric families and the kurtosis is the LBI test against symmetric families. We also discuss non-regular cases such as testing normality against the stable family and some related results in the multivariate cases. ...
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(09 October 2001)
Abstract
On September 23, 1998, the boardroom of the New York Fed was a tense place. Around the table sat the heads of every major Wall Street bank, the chairman of the New York Stock Exchange, and representatives from numerous European banks, each of whom had been summoned to discuss a highly unusual prospect: rescuing what had, until then, been the envy of them all, the extraordinarily successful bond-trading firm of Long-Term Capital Management. Roger Lowenstein's <I>When Genius Failed</I> is the gripping ...
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posted to behaviour model
by bookwormzz
on 2009-01-08 19:23:05
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posted to behavioural finance herding
by bookwormzz
on 2009-01-08 19:21:03
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posted to valuation
by bookwormzz
on 2008-12-12 17:15:51
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posted to valuation
by bookwormzz
on 2008-12-12 17:15:15
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posted to cascades information
by bookwormzz
on 2008-11-09 14:04:24
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Abstract
Many scientists now manage the bulk of their bibliographic information electronically, thereby organizing their publications and citation material from digital libraries. However, a library has been described as “thought in cold storage,” and unfortunately many digital libraries can be cold, impersonal, isolated, and inaccessible places. In this Review, we discuss the current chilly state of digital libraries for the computational biologist, including PubMed, IEEE Xplore, the ACM digital library, ISI Web of Knowledge, Scopus, Citeseer, arXiv, DBLP, and Google Scholar. We ...
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posted to behaviour herd
by bookwormzz
on 2008-11-08 14:21:04
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posted to contagion thought
by bookwormzz
on 2008-11-08 14:02:54
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posted to contagion thought
by bookwormzz
on 2008-11-08 13:58:42
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Abstract
This paper analyzes the dynamics of Asian stock index returns through a Regime-Switching Asymmetric Power GARCH model (RS-APGARCH). The model confirms some stylized facts already discussed in former studies but also highlights interesting new characteristics of stock market returns and volatilities. Mainly, it improves the traditional regime-switching GARCH models by including an asymmetric response to news and, above all, by allowing the power transformations of the heteroskedasticity equations to be estimated directly from the data. Several mixture models are compared where ...
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(04 October 2001)
Abstract
If the prescriptions for getting rich that are outlined in books such as <I>The Millionaire Next Door</I> and <I>Rich Dad Poor Dad</I> are successful enough to make the books bestsellers, then one must ask, Why aren't there more millionaires? In <I>Fooled by Randomness</I>, Nassim Nicholas Taleb, a professional trader and mathematics professor, examines what randomness means in business and in life and why human beings are so prone to mistake dumb luck for consummate skill. This eccentric and highly personal exploration ...
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posted to kurtosis
by bookwormzz
on 2008-11-06 18:04:56
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posted to finance models
by bookwormzz
on 2008-11-06 17:24:04
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posted to finance
by bookwormzz
on 2008-11-06 16:30:38
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posted to bias confirmation
by bookwormzz
on 2008-11-05 22:12:57
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Abstract
Readers of medical literature need to consider two types of validity, internal and external. Internal validity means that the study measured what it set out to; external validity is the ability to generalise from the study to the reader's patients. With respect to internal validity, selection bias, information bias, and confounding are present to some degree in all observational research. Selection bias stems from an ...
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Abstract
Experimental evidence suggests that people often do not feel comfortable with making decisions based on a single piece of evidence and that they systematically look for confirming evidence before choosing. The goal of this paper is to investigate whether such behavior is appropriate for multi-attribute binary choice. We model the experimentally observed "thirst for confirming redundancy" (Bruner, Goodnow, & Austin, 1956) through a simple heuristic strategy (CONF) that needs two consistent cues to make a binary choice. Analytical expressions for the ...
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posted to contagion thought
by bookwormzz
on 2008-10-22 16:58:33
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posted to anchoring subliminal
by bookwormzz
on 2008-10-22 16:35:19
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Abstract
The recent flowering of Bayesian approaches invites the re-examination of classic issues in behavior, even in areas as venerable as Pavlovian conditioning. A statistical account can offer a new, principled interpretation of behavior, and previous experiments and theories can inform many unexplored aspects of the Bayesian enterprise. Here we consider one such issue: the finding that surprising events provoke animals to learn faster. We suggest that, in a statistical account of conditioning, surprise signals change and therefore uncertainty and the need ...
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posted to behaviour
by bookwormzz
on 2008-10-20 14:47:49
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Abstract
Three studies tested the stochastic difference choice model (proportional difference, PD, version in Gonzalez-Vallejo, 2002) in the domain of decision making under certainty. Consumer services and products, hotels defined by price and quality and MP3 players defined by price and memory size, served as choice pairs. The ordinal prediction relating the proportional difference variable, d (computed from stimuli pairs), and the observed choice proportions was supported. Model fitting showed that PD's estimated decision threshold measured within-person sensitivity to value attribute differences ...
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posted to behavioural contagion thought
by bookwormzz
on 2008-10-20 13:17:26
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DISPOSITION EFFECT research
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Abstract
One of the most significant and unique features in Kahneman and Tversky's approach to choice under uncertainty is aversion to loss realization. This paper is concerned with two aspects of this feature. First, we place this behavior pattern into a wider theoretical framework concerning a general disposition to sell winners too early and hold losers too long. This framework includes other elements, namely mental accounting, regret aversion, self-control, and tax considerations. Second, we discuss evidence which suggests that tax considerations alone ...
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posted to bias confirmation
by bookwormzz
on 2008-10-19 12:54:15
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Abstract
Methodological objectivism is a conception of bias which obscures the contingent and limited nature of methodological principles behind the guise of fixed a priori standards. I suggest as an alternative a more flexible view of the operation of bias which I call the attribution model. The attribution model makes explicit the working principles of both parties to an actual charge of bias. It enables those involved to identify the issues in dispute between them, and is the basis for an approach ...
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Abstract
\textlessp\textgreaterTwenty years ago, behavioral economics did not exist as a field. Most economists were deeply skeptical--even antagonistic--toward the idea of importing insights from psychology into their field. Today, behavioral economics has become virtually mainstream. It is well represented in prominent journals and top economics departments, and behavioral economists, including several contributors to this volume, have garnered some of the most prestigious awards in the profession.\textless/p\textgreater\textlessp\textgreaterThis book assembles the most important papers on behavioral economics published since around 1990. Among the 25 ...
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Beyond Greed and Fear, Vol. 1, No. 9., pp. 91-105
posted to behaviour finance
by bookwormzz
on 2008-10-11 15:09:08
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Beyond Greed and Fear, Vol. 1, No. 9., pp. 13-23
posted to behaviour finance
by bookwormzz
on 2008-10-11 15:08:28
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Abstract
Previous research demonstrated that if attention is paid to a supraliminally presented number, a subsequent quantitative estimate assimilates towards this number (the anchor effect). One explanation states that this effect is merely caused by the heightened accessibility level of the anchor value itself. Based on this numeric priming account and generalizing from subliminal priming studies, we expected a short-lived subliminal anchor effect. We presented participants subliminally with a low or high anchor value (10 or 90) and next they had to ...
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Abstract
Judgmental anchoring--the assimilation of a numeric estimate towards a previously considered standard--is an exceptionally ubiquitous effect that influences human judgment in a variety of domains and paradigms. Three studies examined whether anchoring effects even occur, if anchor values are presented subliminally, outside of judges' awareness. Studies 1 and 2 demonstrate such subliminal anchoring effects: judges assimilated target estimates towards the subliminally presented anchor values. Study 3 further demonstrates that subliminal anchors produced a selective increase in the accessibility of anchor-consistent target ...
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Abstract
Summary. This paper axiomatizes a form of recursive utility on consumption processes that permits a role for ambiguity as well as risk. The model has two prominent special cases: (i) the recursive model of risk preference due to Kreps and Porteus [18]; and (ii) an intertemporal version of multiple-priors utility due to Epstein and Schneider [8]. The generalization presented here permits a three-way separation of intertemporal substitution, risk aversion and ambiguity aversion. ...
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