Figure 1. Comparison of motivation, credibility, and depression symptom scale scores between those reporting use vs. non-use of light therapy (M, SD).

*p<.05. Each measure has a different scale and minimum/maximum values, and is only compared here between groups defined by self-reported use vs. non-use of light therapy. Use: Individuals who reported using LT. Non Use: Individuals reporting no use of LT in the previous winter.