The compilation of aspects of a childs life aids in capturing a multi-dimensional view of the childs life.Additionally, while much research has been done in efforts to further understand separation anxiety in regards to the relationship between infants and their caregivers, it was behavioral psychologist, Mary Ainsworth, who devised a behavioral evaluation method, The Strange Situation (1969), which, at the time, was considered to be the most valuable and famous body of research in the study of separation anxiety. The Strange Situation process assisted in evaluating and measuring the individual attachment styles of infants between the ages of 9 and 18 months. In this observational study an environment is created that fluctuates between familiar and unfamiliar situations that would be experienced in everyday life. The variations in stressfulness and the childs responses are observed and, based on the interaction behavior that is directed towards the caregiver, the infant is categorized into one of four different types of attachment styles: 1. Secure, 2. Anxious-avoidant, insecure, 3. Anxious-ambivalent/resistant, insecure and 4. Disorganized/disoriented.Clinicians may utilize interviews as an assessment tool to gauge the symptomatic occurrences to aid in diagnosing SAD. Interviews may be conducted with the child and also with the attachment figure.
Dysgammaglobulinemia is a type of immune disorder characterized by a reduction in some types of gamma globulins, resulting in heightened susceptibility to some infectious diseases where primary immunity is antibody based.It is distinguished from hypogammaglobulinemia, which is a reduction in all types of gamma globulins.Hyper IgM syndrome can be considered a form of dysgammaglobulinemia, because it results from a failure of transformation from IgM production to production of other antibodies, and so the condition can be interpreted as a reduction of the other types. See also
Immunodeficiency

References
Further reading
Raif S. Geha et al. : "Hyper Immunoglobulin M Immunodeficiency (Dysgammaglobulinemia)", Journal of Clinical Investigation, 1979 August; 64(2): 385–391, doi:10.1172/JCI109473. Accessed 2009-07-17. Andre Cruchaud et al. : "The site of synthesis of the 19S T-globulins in dysgammaglobulinemia" (1962). Accessed 2009-07-17. == External links ==