Multiple sclerosis (MS) is a chronic disease of the central nervous system characterised by inflammation and neurodegeneration. MS is the most common disabling, non-traumatic, neurological condition affecting young adults, and results in a range of neurological signs and symptoms, including motor, sensory, balance and visual dysfunction, as well as cognitive impairment, fatigue and mood disorders (Compston & Coles, 2008). Cognitive impairment (CI) affects a large proportion (40%-70%) of people with MS (Chiaravalloti & DeLuca, 2008), with a resultant negative impact on performance in everyday activities, including employment status, social interactions, treatment adherence and functional independence (Amato, Zipoli, & Portaccio, 2008). CI contributes more to withdrawal from work and unemployment than physical disability in MS (Honan et al., 2012). Patterns of CI in MS typically affect information processing speed, memory (episodic, working and semantic) and executive function (Langdon et al., 2012). Fatigue is also a common disabling symptom in people with MS, which adversely