Inclusion Criteria:  Age 8 to 17.99 years  Chief triage concern of at least one of the following (or comparable) mental health CEDIS triage categories:  Anxiety/situational crisis and/or hyperventilation Bizarre/paranoid behaviour Concern for patient's welfare Depression/suicidal/deliberate self-harm Hallucinations/delusions Violent/homicidal behaviour Insomnia Pediatric disruptive behaviour  Exclusion Criteria:  Brought to the ED by police, peace officers, or EMS Exhibiting features of schizophrenia, schizotypal, delusional disorders, or psychosis (e.g., hallucinations/delusions complaint should be reviewed carefully for this exclusion criterion) Significant self-harm act (i.e., suicide attempt requiring medical clearance, excluding ideation or minor superficial wounds; e.g., laceration/puncture, overdose ingestion, etc.) Other co-morbid medical concerns requiring oversight and/or medical clearance from an emergency physician (e.g., confusion/disorientation, substance withdrawal, other medical complaints, etc.) Substance misuse/intoxication or altered level of consciousness  Exhibiting a behavioural syndrome associated with physiologic disturbances (e.g., anorexia)  Children/youth will also be excluded based on language barriers:  Language barrier (i.e., patient and parent/legal guardian must be fluent in either English or French)