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Loneliness in adolescence: a Rasch analysis of the Perth A-loneness scale
Stephen Houghton1,2, Ida Marais3, Simon C Hunter3,4
1Graduate School of Education, The University of Western Australia, Perth, WA, Australia. Stephen.houghton@uwa.edu.au.
Summary
Rasch analysis validated the Perth A-loneness Scale (PALs) subscales in adolescents. The scale demonstrates good reliability and measurement properties for assessing adolescent loneliness, a key factor in mental health.
Area of Science:
- Psychometrics
- Adolescent Psychology
- Mental Health Assessment
Background:
- The Perth A-loneness Scale (PALs) is a validated measure of adolescent loneliness.
- Previous validation used classical test theory, but Rasch analysis has not been applied.
Purpose of the Study:
- To validate the four subscales of the PALs using Rasch analysis.
- To assess the psychometric properties of the PALs in a large adolescent sample.
Main Methods:
- Rasch analysis was performed on data from 1484 adolescents (mean age 12.8 years).
- Included examination of overall fit, item fit, local response dependence, dimensionality, response category operation, and differential item functioning (DIF).
Main Results:
- Rasch analysis supported the PALs' factor structure and demonstrated reasonable to high reliability for subscales.
- Participants did not consistently differentiate between 'very often' and 'always' on three subscales.
- No DIF was found for neurodevelopmental disorder status or age; however, gender-based DIF was observed for one item on the Positive and Negative Attitude to Aloneness subscales.
Conclusions:
- The findings support the interval scale measurement properties of the PALs.
- The PALs is a reliable tool for assessing adolescent loneliness, a construct linked to mental health issues.
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