Which of the Following Is Not True of the Study

Multiple Choice

Which of the following is not true of the study of Internet users discussed in the text?

A) Participants' social involvement and psychological well-being were measured entirely by self-report measures.
B) Changes in the behavior of the subjects were small.
C) The sample included only people from fewer than 100 families in Pittsburgh.
D) Only households with pre-existing Internet connections were included in the study. New users were excluded.