The document discusses the "Hook Model" used by MindTickle to train sales reps. The Hook Model is a four step process that uses triggers, user actions, rewards, and investment over time to drive adoption rates of training programs to 90% completion across 100+ customers in different industries. It works by triggering users to engage with training content, rewarding them for their actions and progress with points and badges, and keeping them engaged by showing leaderboards and achievable goals. This has led to 80% of participants earning all available badges, which highly correlates with training program effectiveness.