Attachment measures refer to the various procedures used to assess attachment

Attachment theory

Attachment theory describes the dynamics of long-term relationships between humans. Its most important tenet is that an infant needs to develop a relationship with at least one primary caregiver for social and emotional development to occur normally. Attachment theory is an interdisciplinary study...

 in children and adults.

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

Attachment disorder

Attachment disorder is a broad term intended to describe disorders of mood, behavior, and social relationships arising from a failure to form normal attachments to primary care giving figures in early childhood, resulting in problematic social expectations and behaviors...

. These patterns are also referred to as Secure (Group B); Anxious/Resistant (Group C); Avoidant (Group A) and Disorganized/Controlling (Group D).