Fewer babies on Halloween?

This story reports that pregnant women are less likely to go into spontaneous labor on a negatively toned holiday (Halloween).  Similarly, they are more likely to do so on a positively toned holiday (Valentine's Day). Here's a quote from the New York Times story: In a study published this month, however, researchers at the Yale …

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Testosterone levels in Dads

Journalists have been covering a recent empirical article published in the Proceedings of the National Academy of Sciences. The study in question is a quasi-experiment; it tracked the testosterone levels of a probability sample of men in the Philippines. The main result was that compared to men of the same age who'd never had children, …

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Prenatal folic acid and child speech development

A journalist's headline has reported, "Folic acid tied to better toddler talk". a. What kind of claim is this? Frequency, association, or cause? Here is a summary of the main finding: Women who took folic acid supplements in the first two months of pregnancy were less likely to have kids with severe language delays in …

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Can makeup change the way women are perceived?

Recently, researchers tested how makeup affects people's impressions of women. Here is how the story was covered by ABC News--the story includes a video. In the study, a set of female targets posed for photos in which they were wearing no makeup, some makeup, professional makeup, or full, "glamour" makeup. Then the photos were rated …

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Tracking happiness on Twitter

A recent study used Twitter text to track people's moods throughout the day. Here's how the study was covered by wired.com. The journalist explained that: Using Linguistic Inquiry and Word Count, a text analysis program that quantifies the emotional content of statements, Golder and co-author Michael Macy analyzed a total of 509 million tweets generated …

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