(ā‵mōt‵ĭ-vā'shŏn-ăl )

[[1]an- + motivational]

Lack of interest in activities, reduced attention and concentration, apathy, and passivity. It has been reported in association with some neuropsychiatric disorders, e.g., depression, schizophrenia, and traumatic brain injury, and with use of drugs, e.g., marijuana and selective serotonin reuptake inhibitors.