MIDUS respondents were asked if they agreed with this statement: "I know that I can trust my friends, and they know they can trust me." Answers ranged from strongly disagree (1) to strongly agree (7). Here are the means (N = 3,997):
Mean trust score
White men 5.16
Black men 4.89
White women 5.33
Black women 4.59*
*significantly lower than white women
The real gap here is between white and black women: it's almost two-thirds of a standard deviation, a large difference. White women, on average, are much more trusting of their friends.