Reliability and Validity of the Personal Social Capital Scale 16 and Personal Social Capital Scale 8: Two Short Instruments for Survey Studies

Rapid developments in social capital and health research require short instruments for large-scale survey studies. The Personal Social Capital Scale (PSCS) is a theory-based and empirically tested instrument with reliability and validity established in the US and China, but it is too long for large-scale survey research. In this study, we described two short versions of the instrument: the PSCS-16 and PSCS-8. The two short scales were evaluated with survey data collected among an adult sample (N = 259) in China. The sample consisted of rural-to-urban migrants and non-migrant rural and urban residents. Cronbach’s alpha coefficients were .90 for the PSCS-18 and .83 for the PSCS-8. Both short instruments satisfactorily fit a two-factor model comprising the bonding capital and bridging capital subscales. The two short scales were highly correlated with the original PSCS (r = .95 for the PSCS-18 and .93 for the PSCS-8 respectively, p > .001 for both); significantly distinguished the migrant subsample from the two non-migrant subsamples; and significantly predicted social capital investment and stress level. In conclusion, the two short instruments PSCS-16 and PSCS-8 were reliable and valid, and can be used in large-scale survey studies to assess personally owned social capital. Further research is needed to replicate their reliability and validity in different cultural settings and to establish the test–retest reliability. Copyright Springer Science+Business Media Dordrecht 2014