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Bons momentos dos anos 80 (DJ Claudio, off topic)

É, cara, eu já fui adolescente.

Claudio

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Anúncios
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Teoria -> dados, Dados -> teoria, ou….?

Eis um interessante artigo de Juselius & Franchini no qual se encontra este muito, muito, muito interessante trecho:

We shall, however,argue that the relevant issue is how theory enters empirical modelling and not whether one should choose between econometric modelling with or without theory. Hoover (2006) expresses this with admirable clarity:

“The Walrasian approach is totalizing. Theory comes rst. Empirical reality must be theoretically articulated before it can be empirically observed. There is a sense that the Walrasian attitude is that to know anything, one must know everything. ” …. “There is a fundamental problem: How do we come to our a priori knowledge? Most macroeconomists expect empirical evidence to be relevant to our understanding of the world. But if that evidence only can be viewed through totalizing a priori theory, then it cannot be used to revise the theory.”…”The Marshallian approach is archaeological. We have some clues that a systematic structure lies behind the complexities of economic reality. The problem is how to lay this structure bare. To dig down to find the foundations, modifying and adapting our theoretical understanding as new facts accumulate, becoming ever more confident in out grasp of the super structure, but never quite sure that we have reached the lowest level of the structure.”

Interessante, muito interessante. O estudante de Economia mais interessado em questões metodológicas realmente aprende um bocado sobre metodologia científica com um bom curso de Econometria.

Claudio

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Gastos com professores melhoram as notas dos alunos. Gastos com administração, nem tanto…

Eis uma interessante conclusão de um artigo sobre escolas públicas e escolas “charter” (alguma boa tradução?):

This paper explores differences in technical efficiency between traditional public schools and both profit and non-profit charter schools using a stochastic frontier model. We find that administration spending tends to have a negative effect on test scores, while classroom spending tends to have a positive effect on test scores. Spending on support services or supplies had little effect on test scores. More experienced teachers tended to increase efficiency, while minority percentage tended to decrease efficiency.

Um estudo similar para faculdades privadas seria bem-vindo.

Claudio

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Anarquia

Robert Higgs tem um interessante pequeno artigo sobre a discussão tradicional (para mim) de anarquia e não-anarquia.

Trecho:

In pondering the suitability of the More Realistic Model, we might well apply the precautionary principle, which has been much discussed (and nearly always misapplied) in recent years in relation to environmental policy. This principle holds that if an action or policy might cause great irreparable harm, then, notwithstanding a lack of scientific consensus, those who support the action or policy should shoulder the burden of proof. In applying this principle to the state’s establishment and operation, the state’s supporters would appear to stagger under a burden of proof they cannot support with either logic or evidence. Everyone can see the immense harm the state causes day in and day out, not to mention its periodic orgies of mass death and destruction. In the past century alone, states caused hundreds of millions of deaths, not to the combatants on both sides of the many wars they launched, whose casualties loom large enough, but to “their own” populations, whom they have chosen to shoot, bomb, shell, hack, stab, beat, gas, starve, work to death, and otherwise obliterate in ways too grotesque to contemplate calmly. (R. J. Rummel’s latest estimate of twentieth-century democide stands at 262 million persons; the details are available at his Web site.)

Drumond é que deve gostar disto…

Claudio
p.s. por que ninguém se arrisca a escrever uma monografia sobre anarco-capitalismo e revisa a literatura em questão? É até possível estimar o custo do governo (Hummel, citado, faz isto). Eu orientaria um estudante SÉRIO neste tema.

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