Self-criticism is associated with several other negative variables. In one sample, differences in self-criticism as a personality trait were associated with differences in perceived support, negative affect, self-image goals, and overt self-criticism. These are all characteristics that pertain to the experience of depression, revealing that self-criticism affects depression. The persistence of self-criticism as a personality trait can leave some people vulnerable to developing depression. As stated above, Blatt theorized that people who were more self-critical and focused on achievement concerns were more likely to develop a specific type of depression, which he called introjective depression. Both Blatt and Beck have developed measures to assess self-criticism and the experience of depression.