● McCullough , Michael E . , Hoyt , William T . , and Rachal , K . C . ( 2000 ) . What we know ( and need to know ) about assessing forgiveness constructs . In M . E . McCullough , K . I . Pargament , and C . E . Thoresen ( Eds . ) , Forgiveness : Theory , Research , and Practice ( pp . 65 ― 88 ) . New York : Guilford .