While Completing a Survey on Attitudes Toward House Ownership, John

Multiple Choice

While completing a survey on attitudes toward house ownership, John was hit by an attack of indigestion. Which of the following best accounts for the difference between John's and another respondent's scores?

A) A true difference in attitudes
B) A true difference in personality between John and Bob
C) A difference due to temporary personal factors
D) A difference due to situational factors
E) A difference due to variations in administration.