Compact elements are important in computer science in the semantic approach called domain theory, where they are considered as a kind of primitive element : the information represented by compact elements cannot be obtained by any approximation that does not already contain this knowledge.
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Some of these theoretical frameworks include : Cognitive Development Theory ( Aboud, 1988 ); Social Domain Theory ( Killen & Rutland, 2011; Killen, Sinno, & Margie, 2007 ); intergroup contact, individual beliefs and context ) that need to be considered when assessing children's intergroup attitudes.
