This week’s article summary is Orchids
and Dandelions.
As I’ve mentioned in
article summaries on brain science, humans like to put things in categories as
categorization more easily allows for storage in long-term memory.
The article categorizes people into
dandelions and orchids.
Dandelions are those who rebound
easily from misfortune while orchids are those who are dramatically affected by
their environment.
The article also introduced me to two
new terms: the Apgar Test and epigenetics.
The Apgar Test is assessed on newborns
in five areas: appearance, pulse, grimace, activity, respiration.
Epigenetics is the science of how
environment influences the implementation of our genes; in other words, how
nurture (our surroundings) influences nature (our genetic make-up).
As you’ll see in the article, while
genes are important, they aren’t necessarily our destiny—the environment we
live in greatly influences us and the implementation of our genes. And while
80% of us are dandelions who can often rise above an adverse environment, the
20% of us who are orchids need a very supportive and safe environment to grow,
thrive, and flourish.
As an educator and a parent, I read
the article thinking a lot about my students who were most likely orchids and
the importance of creating a positive environment for them.
Joe
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Many children are able to thrive in
any environment, while others may flourish only under the most favorable
conditions.
Early experiences with psychological
trauma and adversity create obstacles to normal development and impair mental
and physical health, but there’s variation in how children respond: While some
are powerfully affected by trauma, others are able to effectively weather
adverse experiences, sustaining few, if any, developmental or health
consequences.
The two types are:
- Dandelion children: About 80 percent of kids show a
kind of biological indifference to experiences of adversity with stress
response circuits in their brains that are minimally reactive to such
events. Like dandelions that thrive in almost any environment, such
children are mostly unperturbed by the stressors and traumas they
confront.
- Orchid children: About 20 percent show an
exceptional susceptibility to both negative and positive social contexts
with stress response circuits highly sensitive to adverse events. Like
orchids, which require very particular, supportive environments to thrive,
these children show an exceptional capacity for succeeding in nurturant,
supportive circumstances, but sustain a disproportionate number of
illnesses and problems when raised in stressful, adverse social
conditions.
Why did orchid children survive over
the course of human evolution? Early hominids may have benefited from having a
few individuals in their midst who were super-sensitive to impending attacks by
animals or hostile rivals.
Being an orchid might also be of great
benefit to those living at the other extreme in environments of exceptional
safety, protection, and abundance. Here, the propensity of orchid children to
be open and porous to environmental events and exposures would garner even
greater advantages. Most children would thrive in such settings; orchids would
thrive spectacularly.
Recognizing this differential
susceptibility is an essential key to understanding the experiences of
individual children, to parenting children of differing sensitivities and
temperaments effectively, and to fostering the healthy, adaptive capacity of
all young people.
In a telling experiment, researchers
measured the correlation between newborn babies’ Apgar scores in the first five
minutes of life and teachers’ observations of the same children in
kindergarten. On average, children with lower Apgar scores were less compliant
with rules and instructions as five-year-olds and had more difficulty sitting
still and focusing, less interest in books and reading, and more difficulty
grasping and using a pencil. At each lower step on the Apgar scale such
physical, social, emotional, language, and communication domains of development
were all significantly more compromised five years later.
But it’s not all about genes,
researchers have found; genetic characteristics create children’s dispositions,
but don’t necessarily determine the outcomes. Children born with orchid-like
genes who are raised in different environments – for example, those placed in
cruel, negligent orphanages versus those welcomed into nurturing foster homes –
had strikingly different outcomes: the latter recovered remarkably well from a
bad start in terms of development and mental health. What’s at work here is
epigenetics – the new science of how the environment influences the expression
of genes.
There’s an adage among pediatricians
that all parents are environmental determinists until they have their own
children, at which point they switch to believing that it’s all about genes.
Watching a child throwing a tantrum at the next table in a restaurant, a
pre-child couple says it’s clearly the parents’ fault for not raising their
child properly. But when the same couple is dealing with its own out-of-control
child in a public place, we hope that those around us understand that we’ve
done our best, but the child came into the world with this temperament. It’s
far more comforting to ascribe the behavior of our own noisy or troubling
toddler to genes, for which we have only passive responsibility, than to our
capacities as parents, for which we are more directly accountable.
The truth lies somewhere in the
middle: it’s not either/or but rather both/and. Every human disposition and
disorder of mental or physical health depends on an intricate interaction
between internal and external causes to take root and advance. The key to
understanding human differences will involve a keener knowledge of how genetic
difference and environmental variation work together to change biological
processes. This approach to ‘unpuzzling’ human nature and wellness brings us
closer to understanding what makes orchids and dandelions bloom, wither, or
move between these states over the course of a changing life.
You can think of human life as the
song that issues from the epigenetic piano and its equalizer, the result of a
complex compositional process shaped by both genes and environments. Each
person is predisposed to play certain types of scores, like those of the orchid
or the dandelion, but there is abundant space for unique variation and
improvisation.
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