A Peace Psychologist Collects Transcripts of 30 Speeches Delivered by a National

Multiple Choice

A peace psychologist collects transcripts of 30 speeches delivered by a national leader in the six months before a major war.She is interested in testing the hypothesis that the leader's speeches promoted aggression in the lead up to the war, a hypothesis that the leader strongly denied in a major television interview after retiring from politics.Which of the following statements is true?

A) This is not valid psychological research because only one person's behaviour was analysed (N=1) and that is too small to be significant.
B) This is not valid psychological research because only one person's behaviour was analysed (N=1) and that is too small to be generalizable.
C) Even though only one person's behaviour was analysed this is common in case studies.
D) This is not valid psychological research because only one person's behaviour was analysed (N=1) and someone else probably wrote the speeches anyway.
E) This is not valid psychological research because only one person's behaviour was analysed (N=1) and that person disagreed with the hypothesis anyway.