Please assess the completion status of the following clinical trial:

Trial Title: Motivated Behavior in Adults With and Without ADHD

Study Design Characteristics:
- Allocation: NON_RANDOMIZED
- Intervention Model: CROSSOVER
- Observational Model: None
- Primary Purpose: BASIC_SCIENCE
- Time Perspective: None
- Masking: DOUBLE
- Phase: PHASE2
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~1. generally healthy~2. between the ages of 18-45~3. non-ADHD subjects do not meet criteria for ADHD diagnosis or any subtype as determined by the Conners Diagnostic Interview or any T-Score \> 55 on Inattentive Symptoms, Hyperactive-Impulsive Symptoms, Total Symptoms or ADHD Index subscales of the CAARS.~4. ADHD subjects meet criteria for a primary diagnosis of ADHD, any subtype, based on DSM-5~Exclusion Criteria:~1. inability to attend all required experimental sessions~2. significant health problems (e.g., current and uncontrolled liver, lung, or heart problems, current or past seizure disorder, serious head trauma)~3. primary diagnosis of Axis I psychiatric disorders other than ADHD (e.g., depression, anxiety disorder, schizophrenia)~4. meet DSM-5 criteria for substance use disorder other than nicotine in the past 12 months~5. use of psychoactive medications in the past 6 months as indicated by self-report~6. positive urine drug screen for drugs or positive breath alcohol concentration~7. contraindications for MPH~8. among women, nursing or a positive pregnancy test~9. IQ \< 80 on Kaufman Brief Intelligence Test, 2nd edition~10. allergy to lactose~11. hypertension (If subject is ≤ 40 years of age and has blood pressure over 135/85 or heart rate over 90 beats per minute. If subject is \> 40 years of age and has blood pressure over 130/80 or heart rate over 88 beats per minute)~12. body mass ratio \> 30

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 45 Years
- Healthy Volunteers: t

Study Arms:
- ADHD group (Type: EXPERIMENTAL): Adults with ADHD
- non-ADHD group (Type: EXPERIMENTAL): Adults without ADHD

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