Pattern variables Pattern variables are" the principle tools of structural analysis outlining the derivation of these categories from the intrinsic logic of social action --the inherent dilemmas of choice facing actors". Parsons argues that there are a strictly limited and defined set of alternatives or choices that can be made, and the relative primacies given to choices constitute the"patterning of relational institutions These choices or alternatives are called orientation-selectionPattern Variables • Pattern variables are ''the principle tools of structural analysis outlining the derivation of these categories from the intrinsic logic of social action -- the inherent dilemmas of choice facing actors'' . Parsons argues that there are a strictly limited and defined set of alternatives or choices that can be made, and the relative primacies given to choices constitute the ''patterning of relational institutions.'' These choices or alternatives are called orientation-selection