Factors affecting the relationship between adaptive behavior and challenging behaviors in individuals with intellectual disability and co-occurring disorders.

Balboni et al. (2020) looked at 105 adults and children living in institutions. All had severe or profound intellectual disability plus two or more other diagnoses.

The team scored each person’s daily-living skills and counted how often they hit, bit, screamed, or destroyed things. They also noted any conduct disorder labels.

The people with the strongest daily-living skills also showed the most challenging behavior. Conduct disorders were common in this high-skill, high-problem group.

In short, better self-help did not mean calmer days. It went the opposite way.

Keintz et al. (2011) saw the same pattern: low mood, not low skills, predicted more problem behavior. Together the papers hint that internal states drive behavior more than skill level.

Matson et al. (1999) looked at severe ID plus epilepsy and found lower adaptive skills but equal maladaptive acts. That result seems to clash with Giulia’s finding until you see the difference: epilepsy lowers ability, while multiple conduct disorders in Giulia’s sample kept ability high but raised behavior issues.

Palka Bayard de Volo et al. (2021) systematic review warns that pain, autism traits, and depression can all look like “behavior” in severe ID. Giulia’s data add another layer: strong daily skills can hide serious emotional or conduct problems.

Do not assume a client who dresses, feeds, and toilets independently will have mild behavior plans. Screen for mood, pain, and conduct issues even when adaptive scores look good. Build behavior supports that match the real trigger, not the skill list.