ABA Fundamentals

Primary encopresis: evaluation and treatment.

O'Brien et al. (1986) · Journal of applied behavior analysis 1986
★ The Verdict

Start encopresis treatment with laxatives and praise, but have punishment and scheduled sits ready if accidents last past eight weeks.

✓ Read this if BCBAs treating toilet accidents in preschoolers at home or clinic.
✗ Skip if Practitioners working only with older youth or daytime wetting.

01Research in Context

01

What this study did

Four kids who kept soiling their pants got a two-part plan. First, a doctor gave them a laxative to clear out the bowel. Then parents spent extra play time with the child right after each successful toilet trip.

The team watched each family at home. They used a multiple-baseline design, starting the plan at different times for each child.

02

What they found

Two children stopped soiling within eight to eleven weeks with just the laxative and play-time reward.

The other two kept having accidents. The team then added three stricter steps: positive practice (walking to the toilet ten times after an accident), brief time-out, and hourly toilet sits. Only then did these two reach dryness, but it took longer.

03

How this fits with other research

Rinald et al. (2012) later packed the same ideas into a one-day parent workshop for kids with developmental disabilities. Five of six children trained within a week, showing the core steps still work when you teach parents faster.

Frame et al. (1984) had already shown that teaching attention first makes later punishment more acceptable. The 1986 study followed that path: start nice, add punishment only if needed.

Cohen-Almeida et al. (2000) warn that even perfect plans fail if parents do not follow through. The 1986 success hinged on moms and dads giving the laxative and running the sits every day.

04

Why it matters

If you face encopresis, begin with medical clearance and a simple reward like child-time. Track accidents daily. If the child is still dirty after two months, layer in positive practice, time-out, and scheduled sits rather than giving up. Map each step for parents and check they can do it before you add the tougher parts.

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Add a daily accident chart and tell parents you will add hourly toilet sits if no progress shows in two weeks.

02At a glance

Intervention
other
Design
multiple baseline across participants
Sample size
4
Population
not specified
Finding
mixed
Magnitude
medium

03Original abstract

Cathartic and behavioral treatment procedures for eliminating diurnal and nocturnal primary encopresis were investigated using a multiple-baseline design across four children. The dependent and independent variables measured were appropriate bowel movements, soiling accidents, independent toiletings, and cathartic use. Over 177 reliability observations (home visits) were conducted. For two of the children, treatment with cathartics and child-time remedied their soiling accidents and increased their independent toiletings in 8 to 11 weeks. While the cathartics and child-time increased the rate of appropriate bowel movements, they did not eliminate the soiling accidents with the other two children. Independent toiletings for these two children were achieved after 32 to 39 weeks of treatment when punishment procedures (positive practice, time-out, and hourly toilet sits) were incorporated and the suppositories were faded systematically.

Journal of applied behavior analysis, 1986 · doi:10.1901/jaba.1986.19-137