Inclusion
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• Age 18–40 years.
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• BMI of 20 – 45 kg/m2.
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• Fluent in English.
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• Have provided written informed consent.
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• Current or previous diagnosis of an eating disorder or any other psychiatric diagnosis, including substance dependence.
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Exclusion
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• Pregnant or breast-feeding women.
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• Inability to tolerate the MRI scanner due to physical or psychological factors.
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• Known medical condition, disease or neurological disorder which might, in the opinion of investigator/s, interfere with the assessments to be made in the study or put subjects at increased risk.
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• History of physical brain injury or blow to the head that resulted in loss of consciousness for at least 10 min.
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• Prior treatment with any stimulant medication.
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