When someone has wronged you, are you quick to forgive or do you hold a grudge against the offender? The idea of holding grudges has been thoroughly researched among Western cultures, yet research is limited in examining holding grudges cross-culturally. Previous research has found that collectivist cultures, commonly found in Eastern countries, are more likely to forgive than those in individualistic cultures, though these results lack general consistency. Research has also concluded that high levels of forgiveness are associated with high religiousness, well-being, and overall health, though these aspects have not been directly researched cross-culturally. The present study will investigate the differences in grudge-holding across Eastern and Western cultures, and look at the correlations between grudge-holding and religiousness, well-being, and health. This will be studied in two forms: an online questionnaire inquiring about current grudges, and an in-person study involving inducing a grudge in the participant against a confederate. I hypothesize, first, that there will be a strong correlation between grudge-holding and lower religiousness, well-being, and health, and second, that cultures with higher collectivist scores will be more forgiving both on the questionnaire and in the lab, and rank higher in religiousness, well-being, and health.