Julia T O'Connor

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The authors screened 3,867 psychiatric inpatients for intermittent acute porphyria by use of a spot test to detect diminished activity of the erythrocyte enzyme porphobilinogen (PBG) deaminase. Eighteen individuals so identified also had persistently diminished quantitative activity of PBG deaminase. Eight of these appeared to have intermittent acute(More)
Neurobehavioral and developmental issues with a broad range of deficits are prominent features of Cornelia de Lange syndrome (CdLS), a disorder due to disruption of the cohesin protein complex. The etiologic relationship of these clinical findings to anatomic abnormalities on neuro-imaging studies has not, however, been established. Anatomic abnormalities(More)
When self-restraint and self-injurious behavior (SIB) co-occur, self-restraint might be maintained by negative reinforcement through the removal of SIB. The current study evaluated this possibility with an individual who exhibited hand-to-head SIB. Three functional analyses of SIB were conducted: (a) no consequences for self-restraint, (b) self-restraint(More)
The efficacy of function-based interventions for the treatment of severe problem behavior exhibited by individuals with intellectual and developmental disabilities (IDD) is well established. However, few studies have reported on behavioral interventions in fragile X syndrome (FXS) specifically. The present study is a consecutive case-series analysis that(More)
Functional assessment has significantly improved the success of behavioral treatment of problem behaviors in adults with mental retardation. Functional assessment methods (i.e., techniques that yield a hypothesis of functional relationships) include direct observation, interviews, and checklists. Functional analysis consists of empirical methods that(More)
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