Autism & Developmental

Using a chaser to decrease packing in children with feeding disorders.

Vaz et al. (2012) · Journal of applied behavior analysis 2012
★ The Verdict

A quick sip or bite of a favorite food right after each target bite wipes out packing in kids with feeding disorders.

✓ Read this if BCBAs treating food refusal or packing in clinic or home settings.
✗ Skip if Practitioners working only on cup drinking or texture expansion without packing issues.

01Research in Context

01

What this study did

Three kids with feeding disorders kept food in their mouths instead of swallowing. This is called packing.

The team gave each child a tiny sip of juice or a bite of yogurt right after every non-preferred bite. They called this bite or sip a “chaser.” They tried two timings: chaser right away or 15 seconds later.

02

What they found

Packing dropped to zero for every child no matter which timing was used. Kids swallowed faster and meals felt easier.

03

How this fits with other research

Chen et al. (2022) tested bite-by-bite versus “save-up” rewards and found kids often like the quick, one-bite style. The chaser is the quickest reward—one sip, one swallow.

Kirkwood et al. (2021) showed that if a child refuses food for both escape and attention, you must block both reasons. The chaser gives attention and a pleasant taste, so it may cover both reasons at once.

ALee et al. (2022) used simple praise and toys to help autistic kids accept new foods. Their study widens the map: the chaser idea can travel beyond classic feeding-disorder clinics to kids on the spectrum.

04

Why it matters

You can erase packing today. Keep a small cup of the child’s favorite drink or a spoon of yogurt beside the plate. After each target bite, immediately offer the chaser. Start with zero-second delay, then fade to 15 seconds if you need to slow calories. Record mouth-clean swallows and stop when packing stays at zero for three meals in a row.

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→ Action — try this Monday

Place a 1-oz cup of apple juice on the table; give a 3-s sip immediately after each non-preferred bite and record mouth checks.

02At a glance

Intervention
feeding intervention
Design
single case other
Sample size
3
Population
feeding disorder
Finding
positive
Magnitude
large

03Original abstract

Packing is a problematic mealtime behavior that is characterized by pocketing or holding solids or liquids in the mouth without swallowing. In the current study, we examined the effects of a chaser, a liquid or solid consistently accepted and swallowed by the child, to decrease packing of solid foods in 3 children with feeding disorders. During the chaser procedure, the therapist presented the chaser immediately for 2 children or 15 s after each bite presentation for 1 child. The chaser was effective in decreasing packing for all 3 children. The results are discussed in terms of the clinical importance of the findings and directions for future research.

Journal of applied behavior analysis, 2012 · doi:10.1901/jaba.2012.45-97