The purpose of the experiment was to determine whether manipulation of an individual's Facebook news feed by blocking either positive or negative emotional content could affect the mood and emotional expression of that person. In short, the experiment sought to determine whether emotion is "contagious."

What the study found was that 11.9% of the former smokers had ever tried an electronic cigarette in the past year. This means they might have tried an electronic cigarette once and never taken another puff again. It means they may have tried a single puff on an electronic cigarette just to see what it was like.

The Rest of the Story

There is no excuse for collecting this important information, but not revealing it to the public. The only legitimate justification for this would be if there were no reported conflicts of interest. In such a case, the report could have included a statement indicating that none of the report's authors reported a conflict of interest.

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