Conceptualization and measurement of disability in studies on subjective well-being: a critical review and evidence from the Italian Health Surveys

The main aim of this study is to assess, through a wide literature review, whether the concept of “disability,” as variously formulated, can be considered a good foundation for scientific research on happiness and subjective well-being, as well as the effect of some conceptualizations on the understanding of the relationship between happiness and disability. The literature review includes longitudinal population studies, cross-sectional surveys and longitudinal clinical researches. The empirical part of the study, based on the 2013 Italian Health Interview Survey, shows some examples of the impact of different definitions of disability on the subjective well-being variability. The Italian Health Interview Survey is conducted every 5 years and carried out on a sample of about 60,000 households and 162,000 respondents distributed in 1456 municipalities. Some suggestions for future research, based on a vision of the multifaceted nature of disability, are proposed.