(a) Give an example from your own life of the use of one or more defense mechanisms. (b) What purpose did the defense mechanism(s) serve? (c) Were there any harmful effects? (d) Since many of these...

(a) Give an example from your own life of the use of one or more defense mechanisms. (b) What purpose did the defense mechanism(s) serve? (c) Were there any harmful effects? (d) Since many of these mechanisms are used unconsciously, how can you (or anyone) know that they actually exist?