Learning! Roundup: Selfies aren't so bad, mothers lose self-esteem, bias against black girls, and more!

Photo credit: Foter.com

Stop the Selfie-Shaming

Despite everyone's love for hating on selfie-taking Millenials, a new study shows that selfies are not necessarily narcissistic. According to researchers, people take selfies for three general reasons: communication (a way to start conversation with family and friends), recording their life (and instead of showing you the pics in person, they just share them online), and finally, self-promotion. That last group are the narcissistic ones, the other two don't match with narcissistic personality traits, and most people fall into the first two camps.

Motherhood and Self-Esteem

Hey new moms! You know how you feel all unsure about who you are and your place in the world? Well, turns out that new mothers experience about a 3-year self-esteem dip following childbirth. Hooray.

Bias Against Black Girls

We know by now that there are a ton of cognitive and systemic biases that make life harder for people of colour. Here's another: black girls are seen as less innocent than their white counterparts by age 5. Apparently, people think they need less protection and less nurturing - at age FIVE.

Global Emissions Have a 1%

Okay, not quite 1%, but it turns out that 100 companies are responsible for 71% of global emissions, and that a fifth of global greenhouse gas emissions are backed by public money.

Yogis Rejoice

Yoga may help prevent cognitive decline. A recent study shows that women who practiced yoga regularly had greater cortical thickness, previously linked with language and memory. First, remember that this is a correlational, not experimental study. Second, note that they only had 42 participants. Finally, keep in mind that meditation has been shown to increase prefrontal cortex activity, so that may be the cause. Of course, there are other studies showing that memory improved in elders who learned yoga, so all signs point to yoga!

Rat Memories

You know that feeling when you're sure you've forgotten something? Turns out, rats feel it, too! New research shows that rats are aware of what they do and do not remember.

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