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Apathy Motivation Index (AMI)
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Supplemental: Parkinson's Disease (PD)
Short Description of Instrument
The Apathy Motivation Index (AMI) is an 18 item self-report index that assesses apathy in the behavioral activation (BA), emotional sensitivity (ES), and social motivation (SM) domains over the previous two weeks. It was adapted from the Lille Apathy Rating Scale (LARS).
Comments/Special Instructions
If administering the self-report version without concurrent administration of the caregiver version, researchers should be aware that patients may lack self-awareness of apathy.
Scoring and Psychometric Properties
Total AMI score correlated positively with Lille Apathy Rating Scale (LARS) overall score (r = 0.51, P < 0.001) and had good diagnostic accuracy (AUC=0.82); internal reliability was good (Cronbach's a overall = 0.86, a BA = 0.79, a SM = 0.80, a ES = 0.66) in PD (Ang et al., 2018).
Strengths: Multidimensional assessment of apathy; self-report that is quick and easy to administer.
Weaknesses: Limited use in PD.
Key Reference:
Ang YS, Lockwood P, Apps MA, Muhammed K, Husain M. Distinct Subtypes of Apathy Revealed by the Apathy Motivation Index. PLoS One. 2017 Jan 11;12(1):e0169938.
Additional Reference:
Ang YS, Lockwood PL, Kienast A, Plant O, Drew D, Slavkova E, Tamm M, Husain M. Differential impact of behavioral, social, and emotional apathy on Parkinson's disease. Ann Clin Transl Neurol. 2018 Aug 14;5(10):1286-1291.
Document last updated August 2022