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Rotational Movements
Sep 19, 2026
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All life, including our developmental milestones, can only be created through rotational movements against gravity. A plant that can't process these movements will die. We can blame that on the lack of sun or water - BUT - the common movement or gauge is a lack of rotational responses. We see these same biological responses in nature: from the birth of a seed to humans, planets, suns/stars, and the solar system.
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A newborn's first rotational movements are assumed or experienced from a full-term, vaginal delivery. Impeding this natural system will lead to delays or even inability to develop. There are stages to evaluate a baby's rotational responses. I created the Newborn Movement Assessment in the hopes that all babies are graded on this system so parents and professionals have a plan to know if the baby is ready for development or needs help. If a baby is unable to produce or respond with a rotational movement, they most likely will not be able to go into deve...
How To Get Started: Cerebral Palsy
Sep 17, 2026
How to get started when you think you have cerebral palsy or you know you have cerebral palsy
Cerebral palsy isn't the starting point for therapy. And Movement Lesson isn’t being proposed as “the therapy” in your answer.
“Do you think every child with cerebral palsy should follow the same therapy routine?”
Absolutely not.
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In fact, the diagnosis of cerebral palsy does not tell you where your child is developmentally or what you should begin concentrating on.
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Before deciding what to work on, you need to locate your child.
This is where the assessment tools within Movement Lesson™ become useful. They give parents a way to look at the child’s actual movement and development rather than assuming that children who share the same diagnosis share the same developmental needs.
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The first place to look is the Five Organizational Stages:
Horizontal → Vertical → Transition → Locomotion → Acquisition
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Where is your child?
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...Optimal Development
Sep 15, 2026
It's a universally accepted truth that parents want the best for their children. This is why you are here. As your baby grows, you may find yourself examining each little gesture, movement, and sound, wondering if they're on track. We're here to tell you about the profound impact of movement lessons on a child's development and how, as a parent, you can employ them to ensure your baby reaches their optimal potential.
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1. Understanding the Importance of Movement:
From the moment they are born, babies learn about the world through their senses and movement. These movements, no matter how subtle, are the building blocks of future milestones like sitting, crawling, and walking. When a movement isn't optimal, your baby is still calculating their development around it, too.
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2. Addressing Developmental Concerns Early:
If you have concerns about your baby's developmental milestones, it's crucial to address them early. By incorporating Movement Lesson, you ca...
Cognitive Vision + Developmental Relationships: Part 2 of 2
Sep 10, 2026
X. SHORT VISION 
 LONG VISION
This becomes especially significant as the child becomes more upright and environmentally engaged.
You described children who remain developmentally stressed around rolling at seven months and do not have good independent sitting.
One visual consequence you observe is that the child's visual organization can become very short.
The child then has difficulty transitioning:
short → long → short
rather than simply having “near vision” and “distance vision.”
This is another major Turner distinction.
The developmental question is not only:
Can the child see something far away?
It is whether the visual system can organize the change in spatial relationship and then reorganize when the relationship changes again.
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XI. ACTIVE / PASSIVE CONVERGENCE
This should become a major Turner Vision concept.
I would not write the formal definition yet because I want it directly from you/source material rathe...
Cognitive Vision + Developmental Relationships: Part 1 of 2
Sep 08, 2026
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Movement Lesson VISION
Developmental Vision → Functional Organization → Movement Integration
Purpose
To show that visual development is not an isolated sensory achievement and is not adequately represented by whether a child can “see.”
Turner Vision examines how vision becomes functionally organized through development, how that organization participates in developmental movement, and how interruption or stress within visual organization can affect the child's ability to progress through subsequent developmental functions.
The purpose is not to create another milestone checklist.
The purpose is to understand:
What should be organizing → what is actually organizing → where is the stress → what function is being affected → what needs attention.
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I. VISUAL ACCESS COMES FIRST
Before interpreting developmental visual behavior, establish whether the child has adequate visual access.
This preserves the hierarchy we established at th...
Layers of Development
Sep 05, 2026
What I’m showing is not one developmental ladder.
I’m showing an invariant organizational architecture that can be reacquired, reused, and expressed differently as the system’s field of activity changes.
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Look at what I’m building across these examples.
The infant sequence gives the clean foundational cycle:
Horizontal → Vertical → Transitional → Locomotion → Acquisition with the organizational qualities underneath them expressed as Foundation → Stacking → Integration → Execution → Precision.
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The 18-month-to-5-year rotational developmental cycle:
Then this cycle does something especially important. The child has already acquired walking. Yet the stages appear again. Horizontal is now things like rolling with momentum and being pushed on a swing; Vertical includes holding oneself on the swing and somersaulting; Transitional introduces equipment and refinement; Locomotion develops independent cycling/swinging/jumping; Acquisition expands into
...Understanding CP
Sep 03, 2026
Deviation
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This is where Movement Lesson assessments become particularly interesting.
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Once you have:
STAGE Ă— FORCE Ă— DEVIATION
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You can describe something a milestone checklist can’t describe very well.
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Two children could both be “sitting,” for example, while the internal movement organization producing that outcome is very different.
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The observable accomplishment isn’t the endpoint of the assessment. It becomes the entry point into the assessment.
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Our content architecture becomes much bigger than the individual book. The series is becoming a multidimensional assessment system.
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Click HERE and learn more today!Â
Sitting After Age Four: What Should You Look At?
Sep 01, 2026
If your child is over four and is still working toward unsupported sitting, I would not begin by asking whether they are simply “late.” I would ask what is preventing the body from organizing sitting.
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There are three areas I look at first:
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1. VISION — Can your child cross visual midline and move into convergence?
Sitting isn’t only a trunk or strength skill. The visual system helps organize the body around midline.
Watch whether your child can visually cross from one side of the body to the other and whether the eyes can converge. If the visual system cannot organize around and across midline, the body may have difficulty organizing there as well.
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2. PELVIS + HIPS — Is the structure allowing the movement?
Before repeatedly practicing sitting, look at the pelvis and hips.
Structural differences, such as coxa valga of the femoral heads, can interfere with the mechanics required to come into and out of sitting. In those situations,
...VISION — CONVERGENCE: Part 3 of 3
Aug 29, 2026
Movement Lesson VISION — CONVERGENCE cont.
19. Strabismus and Convergence Need Careful Language
The parent's report says that the clinical report contains cover/uncover results, a diagnosis of strabismus, and a recommendation for surgery, but apparently does not mention convergence insufficiency.
Here we should make an important distinction.
A diagnosis of strabismus severe enough to lead to a surgical recommendation does not by itself allow us to substitute the separate clinical diagnosis “convergence insufficiency.”
But from the Turner Vision standpoint, significant strabismus makes the child's binocular and convergence organization highly relevant to functional assessment.
The medical report and Turner assessment are answering different questions.
The medical report may establish:
ocular alignment findings → strabismus → medical/surgical management
Turner Vision is additionally asking:
How are the two eyes organizing functionally acros...
VISION — CONVERGENCE: Part 2 of 3
Aug 27, 2026
Movement Lesson VISION — CONVERGENCE cont.
10. The Diamond Scale as a Convergence Field
This is where your existing Diamond Scale becomes extremely important.
The main points and facets crossed during the Diamond Scale shouldn't only provide information about where vision is available.
They can also provide locations at which convergence should remain available.
Instead of testing convergence only along a central near/far line, you can examine it throughout the Diamond.
That potentially gives us a functional convergence map.
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11. Center Convergence
At the center:Â Midline convergence
Can the eyes organize together toward the shared visual target?
Can that organization be maintained?
Does one eye alter its relationship?
Does the convergence appear stable?
This establishes the central relationship.
But then the target has to move.
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12. Left and Right Convergence
As the Diamond Scale moves through left ...