Abstract
Attachment is considered as a unique informative relationship between the child and an adult who is regarded as an authoritative source of information. Mother and child are able to relate through those aspects of reality construed through genetically shared constructs. The information content of attachment may be divided into three levels
1. The superordinate level concerns the difference between the subject and the object of his or her knowledge (self and non-self).
2. The intermediate level defines the epistemological criteria; that is, it provides answers to the question, how is knowledge obtained? It also distinguishes between speculative knowledge subordinate to the pole self and acquired knowledge subordinate to the pole non-self, thus defining the relationship between two kinds of knowledge.
3. The third subordinate level concerns the constructs through which reality is construed.
The epistemological criteria that define the relationship between acquired and speculative knowledge can be either symmetrical or complementary.