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Archive for 'Tools'

Icon array generator

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We’ve written before about using information grids when communicating risks to the general public. We like them. Turns out they are also called pictographs and, as we learned from an email from Brian Zikmund-Fisher, icon arrays.

Benjamin Franklin’s rule for decision making

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Ben Franklin had views on how to make a decision.

If you bet that you’ll lose weight, do you regain it when the bet is over?

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At Decision Science News, we love the commitment devices. But, as we’ve have spoken about, we have mixed feelings about them, including the nagging concern is that commitment devices they may not lead to deep-seated changes or habit formation.

Chicago: Not all that windy

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At DSN, we’ve been playing a bit with FetchClimate Explorer from Microsoft Research. It lets one define regions of the globe over which it superimposes spatial and time series data concerning temperature, precipitation, sunlight, and, pictured above, wind speed.

Are you Risk Literate?

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THE BERLIN NUMERACY TEST We’ve written before about the challenges of communicating risks. Can people understand the risks inherent in their savings plans, loans, surgeries, or medications? This week, researchers have published a new instrument designed to very quickly assess exactly that (www.riskliteracy.org). We introduce the Berlin Numeracy Test, a new psychometrically sound instrument that […]

You’ve got the whole world in your portfolio

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A famous finance professor once told us that good diversification meant holding everything in the world. Fine, but in what proportion?

Suppose you could invest in every country in the world. How much would you invest in each? In a market-capitalization weighted index, you’d invest in each country in proportion to the market value of its investments (its “market capitalization”). As seen above, the market-capitalization of the USA is about 30%, which would suggest investing 30% of one’s portfolio in the USA. Similarly, one would put 8% in China, and so on. All this data was pulled from the World Bank, and at the end of this post we’ll show you how we did it.

Keep your files in sync for free

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It is not uncommon to have two computers at work, four at home and a server out on the wild, wild internet (that’s what we have, anyway … wait, we forgot one in London). How to keep all these files in sync? Here are our file synchronization tips.

Best graph ever

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Best graph ever. LARGEST EVER DIFFERENCE BETWEEN 328 and 327 SPOTTED IN NEW YORK CITY

The housing bubble by city

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The housing bubble by city. Miami sailed high and fell far. Detroit rose modestly and but dropped more than it went up. Dallas held steady. DC is enjoying a bit of renewed growth, but are in and New York yet to fall?

Area plots unmasked

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RESULTS OF THE GREAT AREA PLOT QUIZ If you are the type of reader who remembers things from last week, you may remember the great area plot quiz we had running. This week, we are excited to announce that the results are in. The plot above shows answers to the four questions. The correct answers […]