Archivio per 25 maggio 2015

25
Mag
15

Gelman had a sense about the dubious Science article – Decision Science News

See on Scoop.itBounded Rationality and Beyond

Statistician Andrew Gelman had a sense that something was up with dubious Science article soon after it was published.

As you probably know, the well-known Science article on attitudes toward gay marriage by LaCour and Green has been called into question (even by its second author) and will likely be retracted by the journal.

We were amazed and impressed to learn today that statistician Andrew Gelman had a sense that something was up with the article soon after it was published. In a December comment in the Washington Post, Gelman was flabbergasted by the size of the claimed result:

What stunned me about these results was not just the effect itself—although I agree that it’s interesting in any case—but the size of the observed differences. They’re huge: an immediate effect of 0.4 on a five-point scale and, after nine months, an effect of 0.8.

A difference of 0.8 on a five-point scale … wow! You rarely see this sort of thing. Just do the math. On a 1-5 scale, the maximum theoretically possible change would be 4. But, considering that lots of people are already at “4” or “5” on the scale, it’s hard to imagine an average change of more than 2. And that would be massive. So we’re talking about a causal effect that’s a full 40% of what is pretty much the maximum change imaginable. Wow, indeed.

 
See on decisionsciencenews.com

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25
Mag
15

Cognitive Behavior Therapy for Diabetes

See on Scoop.itBounded Rationality and Beyond

Cognitive Behavior Therapy (CBT) is usually short-term, goal-directed, and skills-based. Therapists help patients identify and solve problems and learn specific skills to change their thinking and behavior so they can make lasting changes in their behavior and general functioning. At each session, patients record responses to their unhelpful and inaccurate thinking, along with steps they have committed to take in the coming week.

A growing body of literature has demonstrated the effectiveness of CBT for people with diabetes. For example, a randomized controlled trial published last year inDiabetes Care showed that CBT enhanced treatment adherence and decreased depression in Type 2 diabetes patients. In this study, participants received either enhanced usual care or enhanced usual care plus a CBT intervention. Four months after treatment, the group receiving CBT intervention showed greater improvements in medication adherence, depressive symptoms, and diabetes control compared to the usual care group. At the eight-month follow up, the CBT intervention group maintained their gains in adherence and diabetes control.

 
See on huffingtonpost.com

25
Mag
15

What Your Facebook Posts Say About Your Personality – PsyBlog

See on Scoop.itBounded Rationality and Beyond

Facebook updates can reveal narcissism and low self-esteem.

People habitually posting to Facebook about exercise, diets and accomplishments are more likely to be narcissists, a new study finds.

And bragging about accomplishments does tend to attract more attention from friends.

The study’s first author, Dr Tara Marshall, said:

“Although our results suggest that narcissists’ bragging pays off because they receive more likes and comments to their status updates, it could be that their Facebook friends politely offer support while secretly disliking such egotistical displays.

Greater awareness of how one’s status updates might be perceived by friends could help people to avoid topics that annoy more than they entertain.”

The study also found that people who post updates about their current romantic partner are more likely to have low self-esteem.

See on spring.org.uk




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