ABSTRACT
Introduction: Individuals with intellectual disabilities (ID) are at heightened risk of behavioral problems. Methods: This study investigated differences in the severity of challenging behaviors (CBs) among individuals with IDs at varying life stages. Data were collected from parents' retrospective interviews. Surveys were completed by 47 parents whose child with IDs was 19 years or older and had made use of welfare services for individuals who exhibit CBs. Results: The final study sample consisted of 28 parents. Findings showed that (a) parents gave the lowest total scores for severity of CBs for their adult children when at the pre-school stage compared to other stages (elementary school, junior high school, high school, and post-high school), (b) differences between life stages appear to depend on the type of CB, and (c) the most common CB recorded for children between 0 and 2 years old was extreme hyperactivity, followed by severe sleep disturbances. Conclusions: The results of the study show that domain ratings for stereotypic/restricted behaviors, sleep disturbance problems, feeding problems, and problems with elimination often remain stable throughout the life stages. Moreover, parents frequently reported that CBs often occurred in children aged 0-2 years.
ABSTRACT
BACKGROUND: The Behavior Problems Inventory-Short Form (BPI-S), which assesses behavior problems in individuals with intellectual disabilities (ID), is a shorter version of the BPI-01. This study investigated the reliability and validity of the BPI-S Japanese version (BPI-S-J) for adolescents/adults with ID and behavior problems. METHODS: The test-retest reliability included participants with ID and behavioral problems who were enrolled in welfare services. For test-retest reliability, 42 caregivers independently responded to the BPI-S-J every two weeks. Inter-rater reliability was independently assessed using the BPI-S-J by two caregivers who were familiar with the 42 participants. The participants of the validity assessment were 227 students from special needs schools or patients with ID admitted to medical institutions. The total frequency total score was compared based on the degree of ID. To examine the criterion-related validity, we analyzed the total frequency score, the total score of the Criteria for Determining Severe Problem Behavior (CDSPB) and the total score of the Aberrant Behavior Checklist-Japanese version (ABC-J). RESULTS: The BPI-S-J of test-retest reliability was satisfactory (intra-class correlation; ICC) = 0.954), and the total score significantly (ICC = 0.721) represented good inter-rater reliability. For the validity, the BPI-S-J score of participants who had severe and profound ID was significantly higher than those who had mild and moderate ID. Significant correlations were observed between the BPI-S-J score and CDSPB score (r = 0.499), and the ABC-J score (r = 0.699), indicating adequate criterion-related validity. CONCLUSION: This study showed the utility of the BPI-S-J to assess behavior problems in the Japanese ID population.
