According the WHO lexicon on alcohol and drug terms, the so-called amotivational syndrome is "a constellation of features said to be associated with substance use, including apathy, loss of effectiveness, diminished capacity to carry out complex or long-term plans, low tolerance for frustration, impaired concentration, and difficulty in following routines".
This syndrome is especially observed with young people in combination with cannabis long-term use, who drop out of their school or professional training.