Final answer:
The Heine et al. (2008) study found that participants reported higher levels of actual/ideal self-discrepancies when in front of a mirror.
Step-by-step explanation:
In the study conducted by Heine and his colleagues in 2008 focusing on actual/ideal self-discrepancies, it was found that participants reported higher levels of discrepancy when they were in front of a mirror.
This result suggests that being in front of a mirror may heighten self-awareness, leading individuals to become more cognizant of the differences between who they are and who they wish to be. This aligns with other psychological research indicating that increased self-focus can lead to stronger internal reflection and self-evaluation.