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Recognition of subtle emotional cues may be developmental, according to neurological research. At the McLean Hospital in Belmont, Mass., Deborah Yurgelun-Todd and a group of researchers have studied how adolescents perceive emotion as compared to adults. The scientists looked at the brains of 18 children between the ages of 10 and 18 and compared them to 16 adults using functional magnetic resonance imaging (fMRI). Both groups were shown pictures of adult faces and asked to identify the emotion on the faces. Using fMRI, the researchers could trace what part of the brain responded as subjects were asked to identify the expression depicted in the picture. The results surprised the researchers. The adults correctly identified the expression as fear. Yet the teens answered "shocked, surprised, angry." Moreover, teens and adults used different parts of their brains to process what they were feeling. The teens mostly used the amygdala, a small almond shaped region that guides instinctual or "gut" reactions, while the adults relied on the frontal cortex, which governs reason and planning. As the teens got older, however, the center of activity shifted more toward the frontal cortex and away from the cruder response of the amygdala. Yurgelun-Todd, director of neuropsychology and cognitive neuroimaging at McLean Hospital believes the study goes partway to understanding why the teenage years seem so emotionally turbulent. The teens seemed not only to be misreading the feelings on the adult's face, but they reacted strongly from an area deep inside the brain. The frontal cortex helped the adults distinguish fear from shock or surprise. Often called the executive or CEO of the brain, the frontal cortex gives adults the ability to distinguish a subtlety of expression: "Was this really fear or was it surprise or shock?" For the teens, this area wasn't fully operating.

A 2013 joint study, conducted by the Montreal Neurological Institute and Hospital -- The Neuro at McGill University and Oxford University, concludes that the pattern of brain development is similar if you learn one or two languages from birth. However, learning a second language later on in childhood, after gaining proficiency in the first (native) language, does in fact, modify the brain's structure, specifically the brain's inferior frontal cortex. The left inferior frontal cortex became thicker and the right inferior frontal cortex became thinner. The cortex is a multi-layered mass of neurons that plays a major role in cognitive functions such as thought, language, consciousness and memory. The study suggests that the task of acquiring a second language after infancy stimulates new neural growth and connections among neurons in ways seen in acquiring complex motor skills such as juggling. The study's authors speculate that the difficulty that some people have in learning a second language later in life could be explained at the structural level. "The later in childhood that the second language is acquired, the greater are the changes in the inferior frontal cortex," said Dr. Denise Klein, researcher in The Neuro's Cognitive Neuroscience Unit and a lead author on the paper published in the journal Brain and Language. "Our results provide structural evidence that age of acquisition is crucial in laying down the structure for language learning."

The age at which children learn a second language can have a significant bearing on the structure of their adult brain, according to a new joint study by the Montreal Neurological Institute and Hospital -- The Neuro at McGill University and Oxford University. The study concludes that the pattern of brain development is similar if you learn one or two language from birth. However, learning a second language later on in childhood after gaining proficiency in the first (native) language does in fact modify the brain's structure, specifically the brain's inferior frontal cortex. The left inferior frontal cortex became thicker and the right inferior frontal cortex became thinner. The cortex is a multi-layered mass of neurons that plays a major role in cognitive functions such as thought, language, consciousness and memory. The study suggests that the task of acquiring a second language after infancy stimulates new neural growth and connections among neurons in ways seen in acquiring complex motor skills such as juggling. The study's authors speculate that the difficulty that some people have in learning a second language later in life could be explained at the structural level.

13 year old Trisha Prabhu of Naperville, IL, is a finalist in Google Science Fair 2014. Prabhu's project focuses on preventing cyber-bullying. Excerpted from her project summary statement: "Cyberbullying may result in depression, low self-esteem and in rare cases suicides in adolescent victims(12-18). Research shows that, over 50% of adolescents and teens have been bullied online and 10 to 20% experience it regularly. Research also shows that adolescents that post mean/hurtful messages may not understand the potential consequences of their actions because the pre-frontal cortex, the area of brain that controls reasoning and decision-making isn't developed until age 25. I hypothesized that if adolescents(ages 12-18) were provided an alert mechanism that suggested them to re-think their decision if they expressed willingness to post a mean/hurtful message on social media, the number of mean/hurtful messages adolescents will be willing to post would be lesser than adolescents that are not provided with such an alert mechanism. In order to check if my hypothesis was true, I created two Software systems: 1) Baseline 2) Rethink. "Rethink" system measured number of mean/hurtful messages adolescents were willing to post after being alerted to rethink, while the "Baseline" system measured the same without the alert. Results proved that adolescents were 93.43% less willing to post mean/hurtful messages using a "Rethink" system compared with "Baseline" system without alert."

"Sustained changes in the region of the brain associated with cognitive function and emotional control were found in young adult men after one week of playing violent video games ... The results showed that after one week of violent game play, the video game group members showed less activation in the left inferior frontal lobe during the emotional Stroop task and less activation in the anterior cingulate cortex during the counting Stroop task."

Actually, there are some studies just about emotional Stroop tests that sound similar to the one in the violent video games study. This looks like a good presentation about how emotional Stroop tests work: http://frank.mtsu.edu/~sschmidt/Cognitive/Emotion1.pdf This one talks about why those Stroop tests work: "In this task, participants name the colors in which words are printed, and the words vary in their relevance to each theme of psychopathology.The authors review research showing that patients are often slower to name the color of a word associated with concerns relevant to their clinical condition." - http://brainimaging.waisman.wisc.edu/~perlman/papers/stickiness/WilliamsEmoStroop1996.pdf This is a meta-analysis of emotional Stroop test studies that describes (actually, it's critical of) how such studies are done: http://www.psych.wustl.edu/coglab/publications/LarsenMercerBalota2006.pdf

Thanks, Ryan! I will take a look at these.