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Monday, 6 October 2014

Teaching Through Trauma: How poverty affects kids' brains

New research shows the mere fact of being poor can affect kids' brains, making it difficult for them to succeed in school.

Los Angeles public schools — where more than 80 percent of students live in poverty — illustrate the challenges for these students. Less than half of third graders in L.A. Unified read at grade level and 20 percent of students will have dropped out by senior year.

But researchers also offer hope. They said the right interventions can make a difference. And one school in MacArthur Park is battling biology by helping children with life as well as school — to growing success.

Children living in poor neighborhoods are more likely to suffer traumatic incidents, like witnessing or being the victims of shootings, parental neglect or abuse. They also struggle with pernicious daily stressors, including food or housing insecurity, overcrowding and overworked or underemployed, stressed-out parents.

Untreated, researchers have found these events compound, affecting many parts of the body. Studies show chronic stress can change the chemical and physical structures of the brain.

“You see deficits in your ability to regulate emotions in adaptive ways as a result of stress,” said Dr. Cara Wellman, a professor of neuroscience and psychology at Indiana University.

Dendrites, which look like microscopic fingers, stretch off each brain cell to catch information.  Wellman’s studies in mice show that chronic stress causes these fingers to shrink, changing the way the brain works. She found deficiencies in the pre-frontal cortex – the part of the brain needed to solve problems, which is crucial to learning.

Other researchers link chronic stress to a host of cognitive effects, including trouble with attention, concentration, memory and creativity.

For students in many Los Angeles public schools, those chronic stressors are everywhere.

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