Researchers have developed various ways of assessing patterns of attachment in children. A variety of methods allow children to be classified into four attachment pattern groups: secure, anxious-ambivalent, anxious-avoidant, and disorganized/disoriented, or assess disorders of attachment. These patterns are also referred to as Secure (Group B); Anxious/Resistant (Group C); Avoidant (Group A) and Disorganized/Controlling (Group D). The disorganized/controlling attachment classification is thought to represent a breakdown in the attachment-caregiving partnership such that the child does not have an organized behavioral or representational strategy to achieve protection and care from the attachment figure. Each pattern group is further broken down into several sub-categories. A child classified with the disorganized/controlling attachment will be given a "next best fit" organized classification.