Please assess the completion status of the following clinical trial:

Trial Title: Treatment of Severe Destructive Behavior: FCT Versus Wait-List Control

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~Child Subjects:~* Boys and girls between the ages of 3 and 18;~* Destructive behavior (e.g., aggression, property destruction, SIB) that has been the focus of outpatient behavioral and pharmacological treatment but continues to occur, on average, more than once per hour;~* Destructive behavior reinforced by social consequences (i.e., significantly higher and stable rates of the behavior in one or more social test conditions of a functional analysis \[e.g., attention, escape\] relative to the control condition \[play\] and the test condition for automatic reinforcement \[alone or ignore\]);~* On a stable psychoactive drug regimen (or drug free) for at least 3 months with no anticipated changes;~* Stable educational plan and placement, with no anticipated changes during the study.~* Currently enrolled or on the waiting list for the Severe Behavior Clinic.~Adult Subjects (Caregivers):~* Men and women between the ages of 19 and 70;~* Who do not have any physical limitations that would prohibit them from conducting sessions with their child (i.e., pregnant);~* Have a child who is currently enrolled or on the waiting list for the Severe Behavior Clinic.~Exclusion Criteria:~Child Subjects:~* Children not meeting the inclusion criteria above;~* Children currently receiving intensive (15 or more hours per week), function-based, behavioral treatment for their destructive behavior through the school or another program; DSM-V diagnosis of Rett syndrome or other degenerative conditions (e.g., inborn error of metabolism);~* Presence of a comorbid health condition (e.g., blindness) or major mental disorder (e.g., bipolar disorder) that would interfere with participation in the study (e.g., requiring frequent hospitalizations);~* Children with self injury who, based on the results of the risk assessment, cannot be exposed to baseline conditions without placing them at risk of serious or permanent harm (e.g., detached retinas);~* Children requiring changes in drug treatment (but such children will be invited to participate if they meet the above criteria 3 months after a stable drug regimen is achieved).~Adult Subjects (Caregivers):~* Adults who are outside the age range of 19 to 70~* Pregnant mothers (for safety purposes)

- Gender: ALL
- Minimum Age: 3 Years
- Maximum Age: 18 Years
- Healthy Volunteers: f

Study Arms:
- Functional Communication Training (Type: EXPERIMENTAL): Participants assigned to this condition will receive treatment immediately after assignment. The investigators will implement functional communication training (FCT) to teach the participant an appropriate request response, known as a functional communication response or FCR. FCT training will continue until the participant emits independent FCRs in at least 90% of the 30-s intervals and until destructive behavior decreases by 90% (relative to pre-treatment baseline) for two consecutive sessions.
- Waitlist-Control Condition (Type: NO_INTERVENTION): Participants assigned to the waitlist-control condition will not immediately receive services. These participants will be paired with an FCT-condition participant such that the no-treatment duration for these participants is yoked to the amount of time their respective FCT-condition participants receive services (e.g., most treatment last approximately 4 months, or 16 weeks); if Participant A finishes treatment in 16 weeks, Participant B will not receive treatment for at least 16 weeks for comparative measures). After the wait period, these participants will then receive the same services as those assigned to the immediate treatment (FCT Condition).

Based on this trial design, predict the completion outcome and termination type (if applicable).