Similar to Blatt's two personality dimensions, Aaron Beck (1983) defines social dependency and autonomy as dimensions of personality that are relevant for depression. Autonomy refers to how much the person relies on "preserving and increasing his independence, mobility, and personal rights". Furthermore, self-criticism involves holding oneself responsible for any past or present failures. Someone who is a self-critic will attribute negative events as a result of deficiencies in their own character or performance. The personality characteristics that Beck describes as self-critical are usually negative for the person experiencing them. His description of their experience with self-criticism as a personality characteristic is therefore important because it will be similar to their experience of depression.