Buchan, HeatherSunderland, MatthewCarragher, NatachaBatterham, PhilipSlade, Tim2015-12-102015-12-100165-0327http://hdl.handle.net/1885/53609Background Epidemiological studies typically report lower prevalence of mental disorders among older adults relative to middle-aged and young adults. A possible explanation is that age-related bias in the screening items of diagnostic instruments leads toInvestigating age-related differences in responses to screening items for internalising disorders in three national surveys.201410.1016/j.jad.2013.09.0152015-12-09