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2. Kin altruism, reciprocal altruism, and the big five personality factors;Ashton;Evolution and Human Behavior,1998
3. Revised NEO Personality Inventory (NEO-PI-R) and NEO Five-Factor Inventory (NEO-FFI) professional manual;Costa,1992
4. The will to forgive: A pastoral theological view of forgiving;Cunningham;Journal of Pastoral Care,1985
5. Personality and forgiveness;Emmons,2000