Construct validity of the Schwartz outcome scale-10: comparisons to interpersonal distress, adult attachment, alexithymia, the five-factor model, romantic relationship length and ratings of childhood memories.

The Schwartz Outcome Scale-10 (SOS-10) is a 10-item questionnaire that measures the broad domain of psychological well-being and quality of life. The SOS-10 is easy to administer and score. Past research has shown its utility, reliability and validity in different clinical settings (i.e., inpatient, outpatient and non-psychiatry medical settings) and with diverse clinical populations in measuring treatment outcome. The present study looks to extend the construct validity of the SOS-10 to assessing quality of life and psychological health in non-clinical samples as well. The results reveal that the SOS-10 is associated in predicted ways with established measures of attachment, interpersonal distress, alexithymia and the big five model whose construct validity and psychometric soundness has been well documented. The SOS-10 was also associated in predicted ways with ratings of childhood memories and the length of the participants' longest romantic relationship. 2009 John Wiley & Sons, Ltd.