Suppose you want to conduct a survey of the attitude of psychology graduate students studying clinical psychology ...

     22.   Suppose you want to conduct a survey of the attitude of psychology graduate   students   studying clinical psychology   toward psychoanalytic methods of psychotherapy.   One approach would be to   contact every psychology graduate student you   know and ask them to fill out   a questionnaire about it. (a) What kind of sampling   method is this? (b) What is a   major limitation of this kind of approach?