In a Barna Research Group study, a 177-question diagnostic profile was completed by a national sample of 1,344 leaders involved in Christian churches across the nation. Of the 13 "character clusters" evaluated by the profile, the strongest attributes were having a conscience that is sensitive to sin, morality, godly demeanor, humility, values, faith maturity, and trustworthiness. Attributes that were not as strong included using appropriate speech, having a controlled temper, and teaching ability. The attributes that rated lowest on the scale were possessing a loving heart, modeling servanthood, and having godly wisdom.