The Hawthorne Effect is a simple idea that can make a major difference: you cannot improve what you do not track. Looking back at his (Dr. Killeen’s) own goals, he found that the ones he actually accomplished were the ones he deliberately measured, while the ones he simply hoped to achieve were much easier to lose sight of. This is especially important in a dental practice, where small problems can go unnoticed for months before they become much harder to fix. Dr. Killeen explains why weekly tracking creates accountability and gives you a clearer picture of what is really happening. The challenge is simple: choose five numbers that matter most to your practice and track them every week for the next 12 weeks.