A person who uses cannabis/marijuanathis is likely to experience amotivational syndrome
Amotivational syndrome is a Psychological disorder characterized by a decrease in the cognitive and physical states of an individual. Symptoms such as decreased consciousness, depression, lack of activity, incoherence, poor concentration and memory disturbance, detachment etc is noticeable with people having this syndrome
Amotivational syndrome is caused by excessive use and over dependency of the substance(cannabis/ marijuana) together with the abuse of alcohol.