The typical picture of grade to developmental level progression when it comes to fine motor skills suggest that one starts with a four finger grasp before differentiating into pincer, tripod, and lateral pinch finger grasps. Just as gross hand motor skills are expected to be mastered prior to any initiation of fine motor finesse, fine motor skill hierarchy also has a period of latency and skill building.
Upon entry into socialized and organized peer grouping (pre-school), handedness is not yet determined however the traditional methods of encouragement are put in place to prepare the population for Kindergarten. Multi-sensory methods of cream and paint brushes fill the day of positive experiences to encourage the use of both hands in a structured form of expression.
Then Kindergarten begins: less play, more tabletop activities, more periods, and certainly lot more structured writing. A student in this day and age in Kindergarten is expected to be able to write their first and last names neatly, able to write 2-3 sentence essay on pictures that they drew, and be able to color within the lines by the end of the school year by about 80% accurately.
According to the CDC, 5 year old children should be able to perform the following Cognitive Skills below as appropriate to their developmental level:
Cognitive (learning, thinking, problem-solving)
Counts 10 or more things
Can draw a person with at least 6 body parts
Can print some letters or numbers
Copies a triangle and other geometric shapes
Knows about things used every day, like money and food
W.K.1. Use a combination of drawing, dictating, and writing to compose opinion pieces in which they tell a reader the topic or the name of the book they are writing about and state an opinion or preference about the topic or book (e.g., My favorite book is…).
W.K.2. Use a combination of drawing, dictating, and writing to compose informative/explanatory texts in which they name what they are writing about and supply some information about the topic.
W.K.3. Use a combination of drawing, dictating, and writing to narrate a single event or several loosely linked events, tell about the events in the order in which they occurred, and provide a reaction to what happened.
Looking at the comparisons from both sectors, it is clear that the demands expected from a Kindergarten child in the classroom are above the cognitive writing capacity developmentally that a 5 year old can handle.
Or is it? Are these realistic expectation from a 5 year old’s sensorimotor system who’s limbic system is connected mainly to the frontotemporal sections of the prefrontal cortex and the Broca’s speech areas with minimal connection to the interior of the corpus callosum?
Based on the study, “Microstructure, length and connection of Limbic tracts in human normal brain development,” published in Frontiers Journal (http://journal.frontiersin.org/Journal/10.3389/fnagi.2014.00228/full), the study follows the deveopment and attached structures of the limbic system developmentally in the brain from birth to 25 years old. All included children, adolescents and young adults were healthy subjects free of current and past neurological or psychiatric disorders. Right-handed were reported for all children who showed clear handedness. For young children, besides earplugs and earphones, extra foam padding was applied to reduce the sound of the scanner while they were asleep. They found that Memory, emotion, and motivation functions are related to limbic tracts and important for survival. It is vital for limbic tracts to become well myelined earlier than other tracts, especially those projected from frontal and temporal lobes (Baumann and Pham-Dinh, 2001).
They also discovered that although the overall shape of cgc is relatively stable throughout development, extra cgc growth can be observed in its anterior part close to prefrontal cortex (Figure 2). Relative increase of cgc length is probably related to its growth in the prefrontal region. Functions of prefrontal areas are involved in planning, decision making, and moderating social behavior that develop during late childhood and adolescence (e.g., Gogtay et al., 2004). Significant lateralization has been found for all DTI metrics of cgc-L/R and cgh-L/R with age and gender as covariates. his lateralization was associated with higher microstructural integrity on the left side of limbic tracts. Lateralization of DTI metrics of cgc and cgh may be related to unique functions of the left side of human brain such as language (van Veen et al., 2001). Exclusive right-handedness of the recruited subjects may also play a role. These findings are consistent to previous DTI metric measurements of cingulum (Gong et al., 2005;Verhoeven et al., 2010)
In plain English, what the study is saying is that the younger the brain, the lesser the pre-frontal cortex connection there is by the limbic system. It is the limbic system that allows any memory that is attached to a regulatory system (including motor memory) that enhances automaticity of movement such as that of fine motor skills. It also suggests that the system connects more effectively in the parieto-occipital areas, which house the majority of the sensorimotor processing and visual processing.
It then supports the CDC developmental data of what cognitively is expected of a 5 year old: with a still present instinctual need for regulation of pain, temperature, emotions innervated significantly more than that of the prefrontal cortex or the parieto-occipital complex, the coordination potential of a 5 year old’s hands are simply not the best gauge on whether they will be unable to utilize a writing tool or not in the long run. What that also means is that even if the academic demands indicated as a standard for the grade level are used aa a measure for their success, the developmental and imaging data will not agree with the current standards of achievement.
Perhaps then, we need to sit down with neuroscientists when we decide as a nation to adopt and revamp an entire educational curriculum. Educators educate; however, they need to know the brain they are educating. The marriage between education and neuroscience is long overdue.
When three quarters of our household were diagnosed, it suddenly explained a lot. And led to a million more questions. It redefined us and how we do things and so far.... things are better. Way better. Here is our journey, with all the things we're learning, in the hope that others might benefit too.