Using the reverse approach, Sian Bonnell, a British photographer, has photographed a jelly mould with a pinhole camera, then digitally scanned the paper negative and produced a laser print.

ECONOMIST: The daguerreotype is back

The paper found a negative relationship between fiscal consolidation and growth forecast errors and concluded that fiscal multipliers during the crisis must have been larger than had been assumed.

FORBES: Olli's Follies: Is Debate About Fiscal Multipliers Unhelpful?

The SEC staff declined to recommend IFRS, in a paper that was more negative than observers had expected.

ECONOMIST: Global accounting standards

But Figure 2 of the Blanchard-Leigh paper also shows strong negative relationships between fiscal consolidation and growth forecast errors for 2011 and 2012 so this point does not appear correct.

FORBES: Olli's Follies: Is Debate About Fiscal Multipliers Unhelpful?

In the same paper, commentator Mohammed Yacoubi says that, despite "negative aspects" in the way the crisis was dealt with and its "sad" end, the military did the right thing in confronting the militants, despite the risk for hostages.

BBC: Algerian press defends army action in hostage crisis

In a recent paper, Yarrow Dunham at Princeton and colleagues explored when children begin to have negative thoughts about other racial groups.

WSJ: In Children, Bias Blooms Chillingly Early | Mind & Matter

For example, the high-debt, negative-growth year of 1951 in New Zealand was key to the original paper's finding.

WSJ: Spreadsheet Slips Not Economists' Only Problem