Table 2.

Outline of Timing and Content of Intervention components for the STEER and DEDP groups

Week	Driver’s Education (Both Groups)	DEDP Content (Both Groups)	STEER Intervention Content (STEER Group Only)
Week 1	3-hour classroom instruction
Week 2	3-hour classroom/1 hour driving instruction	Parent provided CarChipPro	Parent: Psychoeducation on risks of ADHD and teen driving; House rules and rules of the road
			Teen: Motivational enhancement, House rules and rules of the road
			Joint Session: CarChip Pro introduction and review, Driving contract
Week 3	3-hour classroom/1 hour driving instruction	Simulation Exercise 1: Practice, Hazards Course	Parent: Noticing and attending to positive driving behaviors
			Teen: Expressing feelings and knowing the feelings of others
			Joint: Review of rules, contract, CarChip Pro; Simulation exercise 1 with parent practice of parenting skills
Week 4	3-hour classroom/1 hour driving instruction		Parent: Using effective instructions while teaching driving skills
			Teen: Making an appropriate complaint Joint: Review of rules, contract, CarChip Pro
Week 5	3-hour classroom/1 hour driving instruction	Simulation Exercise 2: Distracted Driving exercise, Impaired Driving exercise, Debrief	Parent: Planned ignoring to promote safe Driving
			Teen: Appropriately answering a Complaint
			Joint: Review of rules, contract, CarChip Pro; Simulation Exercise 2 with parent practice of parenting skills
Week 6	3-hour classroom/1 hour driving instruction		Parent: Privilege removal for violations of road rules
			Teen: Accepting limits set by others Joint: Review of rules, contract, CarChip Pro
Week 7	3-hour classroom/1 hour driving instruction	Simulation Exercise 3: Practice, Hazards Course	Parent: How to discuss driving limits and issues with the teen
			Teen: Introduction to communication Skills
			Joint: Review of rules, contract, CarChip Pro; Simulation Exercise 3 with parent practice of parenting skills
Week 8	3-hour classroom/1 hour driving instruction		Parent: Managing and challenging unreasonable beliefs about adolescent driving
			Teen: Managing and challenging unreasonable beliefs about parents
			Joint: Review of rules, contract, CarChip Pro
Week 9	3-hour classroom/1 hour driving instruction		Parent: Review STEER content, Discuss how parents and teens may continue to implement these strategies in the future
			Teen: Review STEER content, Discuss how parents and teens may continue to implement these strategies in the future
			Joint: Review of rules, contract for licensed driving discussed, CarChip Pro
Week 10	3-hour classroom/1 hour driving instruction		STEER Make-up (if needed)
Week 11	1-hour driving instruction
Week 12	Driver’s instruction make-up (if needed)

Note: STEER=Supporting a Teen’s Effective Entry to the Roadway. DEDP=Driver Education Driving Practice. Adolescent participants in both groups attended the driver’s education programming outlined in the second column. In parallel, participants assigned to DEDP and STEER received the treatment components listed in the third and fourth columns, respectively.