Table 2.

Participant engagement activities in both internet interventions.

Activities	Functions	Examples
List activities	Encourage creation of personal lists.	Lists of pleasant activities, list of supporters, reasons for wanting to feel better, contributing factors, high-tension situations, and warning signs.
Expand-collapse (accordion) activities	Enable exploration of additional detail on topics of interest.	Frequently asked questions, myths and facts.
Drag and drop activity	Provide interactive experience to test discrimination.	Differences between extreme thoughts and everyday concerns.
Goal-setting activity	Interactive steps for selecting goals.	Number of pleasant activities to accomplish each day and the strategies that worked.
Practice change activities	Doing homework tasks in normal routine.	Identify a downward spiral, practice relaxation, and anticipate and savor activities.
Behavior tracking	Chart data over time to identify patterns and show progress.	Daily tracking of smoking status plotted in a chart.
Host videos	Provide human touch and highlight topics in each session.	Host videos at the start of each session.
Testimonial videos	Coping models overcome challenges to quit smoking using strategies from program.	Other smokers’ experiences, for example, doing more fun activities and managing mood patterns and stress.
Animated tutorials	Provide explanation for underlying models for change.	Show downward mood spiral and how it can be caught and managed at critical choice points.