Ploubidis, GB; Abbott, RA; Huppert, FA; Kuh, D; Wadsworth, MEJ; Croudace, TJ; (2007) Improvements in social functioning reported by a birth cohort in mid-adult life: A person-centred analysis of GHQ-28 social dysfunction items using latent class analysis. Personality and individual differences, 42 (2). pp. 305-316. ISSN 0191-8869 DOI: https://doi.org/10.1016/j.paid.2006.07.010 Full text not available from this repository.