Feeding Through a Developmental Lens

Feeding Is a Whole-Body Skill, Not Just a Behavior

From the outside, eating looks simple. A child takes a bite and swallows. Under the surface, almost every body system is at work. Genevieve Covington pointed to the nervous system, the muscles, the bones, breathing, digestion, and hormones. One safe swallow needs all of them working together.

She sorts feeding growth into three connected areas. The first is postural stability (steady head and trunk control). A stable base lets a child breathe, reach, and move the mouth at the same time. The second is oral motor skill (how the mouth muscles work). Lips, jaw, cheeks, and tongue hold food, move it, chew it, and send it down safely. The third is sensory learning (repeated exposure to new textures and smells). This means many chances to touch, smell, see, and taste new food.

Feeding is also a biopsychosocial process (body, learning, and social life). Physiology matters. So do skill level, learning history, how caregivers respond, and the mealtime setting itself. Feeding starts as reflex in infancy. Around four months, it starts to shift toward learned behavior, and it keeps changing across the lifespan.

Eating takes every single system.

From the talk — Genevieve Covington

What Feeding Development Looks Like From Birth to Age Three

In the first four months, reflexive feeding gets more coordinated. Rooting and sucking support latching and milk extraction, by breast or by bottle. Medical history shapes this window a lot. Premature birth, time in intensive care after birth, tube feeding, and reflux can raise the odds of later feeding trouble. So can surgery soon after birth and failure to thrive (not gaining enough weight).

Four to six months is the pivot point. Babies should show readiness and curiosity. They watch caregivers eat. They turn the head toward food. They notice smells. Covington said most infant referrals arrive after the six month window has passed. By then, curiosity never showed up, purees get refused, or the baby shows strong aversion to solids.

From six to nine months, active oral exploration and early self-feeding begin. Bolus control (moving the food around the mouth) improves. Plenty of food still comes back out, and that is expected. Smooth purees are easy. Meat off the bone is harder because the texture feels slippery. This is also the time to practice straw and open cup drinking with caregiver support.

Nine to twelve months brings finer hand skills, small pieces, less spilling, and chewing with more diagonal movement. Children handle mixed textures while seated and supervised. From twelve to eighteen months, finger feeding gets purposeful and utensils come in. The tongue also moves food across the mouth and clears the cheeks. Vertical chewing starts shifting toward rotary chewing.

So milestones describe ranges, not deadlines.

From the talk — Genevieve Covington

Vertical Chewing vs. Rotary Chewing: The Step Programs Skip

Vertical chewing is the up and down jaw movement. It is one of the first chewing patterns infants show, and it works for soft food. Rotary chewing is the circular, side to side jaw movement. It grinds tougher and more complex food. Rotary chewing comes after vertical chewing, and mastery usually lands around age three. Covington called it the last major chewing skill to come online.

This is where chronological age can fool you. She described a three year old in her clinic who was choking on chicken at lunch. He was not a feeding client yet. A follow-up assessment showed chewing skills closer to twelve months, plus food aversions and heavy bruxism (teeth grinding). The food was age appropriate on paper. It was not appropriate for his skills.

Food pouches can hide the same kind of gap. Covington is firmly against them for daily use. A pouch bypasses texture and a lot of flavor. The child also cannot see what is inside. She described one client with a restrictive eating diagnosis who ate only pouches. The first time the contents were poured onto a plate, the child vomited. Her compromise as a parent was to reserve pouches for outings and keep real plates at home.

We're not really experiencing the texture or the flavor.

From the talk — Genevieve Covington

Gagging vs. Choking, and Why Caregiver Fear Stalls Progress

When infants refuse to move into textures, Covington looks at three common causes. One is tethered tissues (tight tissue under the tongue), which makes bolus control hard. Another is caregiver fear of choking. The third is learning history that has been built around refusal. Parent training helps caregivers move past that fear.

Gagging is noisy. It can sound like a cough. The child may redden and push food away, but the child is still breathing. It shows up often with new textures, and not only with food. A new teething toy or chewy fabric can set it off too. The mouth is learning to manage anything that enters it.

Choking is silent. The child cannot breathe or cry because the airway is blocked. Color changes fast, from normal to red to blue. That is an emergency. Covington's clinic runs a three person protocol on top of BLS (Basic Life Support) training. The person who spots the choking calls out for the airway device. A second person calls rescue. A third waits outside to guide responders in. She noted they have used the Heimlich maneuver several times, including on that three year old at lunch.

So gagging is very different than choking.

From the talk — Genevieve Covington

Food Neophobia: Normal Stage or Clinical Concern?

Neophobia (fear of new or unfamiliar food) is the pull to reject food that looks or seems different. Think of the banana with a bruise on it. Think of the one burnt piece of cereal in the bowl. Covington frames it as an old survival feature. For early humans, food that looked different from what a parent handed over could be poison.

Around age three, something else kicks in. Children start tracking what peers eat and what peers refuse. A friend's refusal at preschool can become their refusal at home. So refusal in this window can come from the fear of new food, from copying friends, or from both.

In her experience, mealtime problem behavior tied to early neophobia is usually attention maintained (kept going by caregiver attention). It can also be multiply controlled (caused by more than one factor), mixed with escape and avoidance. But she would start by looking hard at caregiver attention. Her rule of thumb: refer out if neophobia, selective eating, and poor mealtime behavior are still severe after age six. This matters most when the family system is hurting.

It starts in a toddler period and it's most common between ages two and six.

From the talk — Genevieve Covington

Red Flags and When to Bring In Another Discipline

Covington listed the signs that warrant a closer look by a specialist. Poor weight gain or weight loss. Nutritional deficiencies. Coughing, choking, color change, or wet breathing during meals. Trouble coordinating sucking, swallowing, and breathing in infancy. Frequent vomiting, pain, arching, and marked distress. Heavy bruxism also counts as a possible oral motor warning sign.

A narrow diet can create a different medical problem. She described a learner whose entire intake was one flavored nutrition shake. Bloodwork came back showing toxicity (too much of a nutrient) for iron, vitamin B, vitamin D, and vitamin A. His skin had an orange cast. His hair and nails were brittle. A full diet history and labs caught what the mealtime data alone would not.

She also flagged a practical wrinkle for assessment. Disciplines use different tools and report developmental age in different ways. A behavior analyst may pull a developmental level from a VB-MAPP or PEAK (assessment tools used in ABA). Speech and OT may use their own tools, such as the PLS-5 or SPM-2. Those tools score the skills each discipline treats. So compare notes before you assume you are talking about the same number.

So, the more that we coordinate together, the better the outcomes.

From the talk — Genevieve Covington

Choosing Goals From Developmental Level, Not Chronological Age

Covington walked through a learner who came to her early intervention program at six, fully bottle dependent. His nipple size was made for an infant under nine months. A swallow study cleared him medically, but his oral motor skills were far behind. He also carried trauma from earlier feeding work in another state, so the first weeks were slow.

The progression she uses for liquid dependency starts at baseline and shapes the consumable. That may mean thickening the bottle contents. It may mean nipple modification. Only then does the plan move to semi-solids (soft, mashed foods) like yogurt and applesauce. The next step is dissolvable solids (foods that melt in saliva), such as crushed cereal. With this learner, she faded in new texture by ratio. Trials ran at about fifty percent and moved up toward seventy five percent. He cleared a standard spoon with a good lip seal, so no adaptive utensil was needed.

Two targets came out of his history. Years of nipple use left him with tongue protrusion (the tongue pushing forward) at the wrong moments. They taught the tongue to rest behind the teeth instead. Then they used facilitated maceration (helping break food down by chewing). They placed a dissolvable solid on the molar surface and ground it slightly. He used his own tongue lateralization (moving food side to side) to gather and swallow the bolus. The ABA toolkit across her cases included several tools. Pairing (linking the feeding setting with something enjoyable) came first. She also used noncontingent reinforcement (free access to preferred items) and differential reinforcement. Another tool was what she calls gentle escape extinction (refusal no longer ends the demand). Other tools included stimulus fading, response interruption and redirection, preference assessments, and forced choice. She also kept a strong focus on autonomy (giving the child real choices).

So what was once an aversive stimulus is now a highly preferred food.

From the talk — Genevieve Covington

How Feeding Sessions Are Dosed and Scheduled

Dosage depends on the learner. Full-time early intervention clients with severe cases may get three mealtimes a day. Many of those sessions are short, sometimes ten minutes. Some run longer when the team works through what she calls hunger protests (a child's resistance to eating). Early on, a mealtime may just mean coming to the feeding space and eating preferred foods.

That is pairing on purpose. Her clinic keeps specific toys and activities only for the feeding wing. That way learners do not get satiated (bored from too much exposure) on them elsewhere. Older clients with restrictive eating patterns come once or twice a week for ninety minutes to two hours. Those sessions include a lot of food prep, since handling and cooking food is itself desensitization (gradual exposure that reduces fear).

Timelines vary, and she was candid about that. For the bottle-dependent learner, desensitization alone took about a month, longer than she usually sees, because of his history. Once consumption started and inappropriate mealtime behavior dropped, progress moved fast. Total time was roughly a year. By age eight he was eating solid food at home, at school, and in the community. He also used a new communication device to request yogurt.

On funding, she was direct. The insurer initially denied her feeding goals, and she appealed with research. Coverage came through under his autism diagnosis. Later authorizations kept the feeding goals in place once the payer saw progress data.