social institutions Kinship relationships immediate and extended family n Social stratification Reference groups Primary reference groups family, coworkers Secondary reference groups professional associations trade organizations Copyright 2001 by Harcourt, Inc. All rights reserved 3-14Copyright © 2001 by Harcourt, Inc. All rights reserved. 3-14 Social Institutions Kinship relationships • immediate and extended family Social stratification Reference groups • Primary reference groups – family, coworkers • Secondary reference groups – professional associations, trade organizations