ABSTRACT
Background: Few questionnaires are tailored for siblings of children with disabilities. The Negative Adjustment Scale (NAS) was developed to measure siblings’ adjustment, but has not yet been validated.
Objective: To investigate the factor structure and convergent validity of the NAS.
Method: We examined the validity of the NAS in terms of factor structure and convergent validity against a general mental health measure. The sample comprised 107 siblings (M age = 11.5 years, SD = 2.1, 53.8% boys) of children with disabilities.
Results: We confirmed a one-factor structure for the NAS. Convergent validity was demonstrated through significant correlations (r=.29–.44) with sibling externalizing and internalizing mental health difficulties.
Conclusion: The NAS holds promise as a measure tailored for the assessment of sibling’s adjustment.
Acknowledgments
We would like to thank all the participants for taking part in this study.
Declaration of interests
The authors declare no conflict of interest.