You Conducted a Study Testing Whether People Can Accurately Identify

You conducted a study testing whether people can accurately identify the emotions happiness and sadness depicted in photographs of different emotional expressions.Your findings show that people in the United States and the United Kingdom accurately identified these emotions in over 90% of your photographs.Your colleague tells you that this study is weak evidence for universal facial expressions and that you should conduct a follow-up study.Which of the following variations would provide stronger evidence that facial expressions of emotions are universal?

A) You enroll twice as many participants in Study 2 as you did in Study 1.
B) In Study 2, you recruit participants from the United States and United Kingdom as well as Japan and South Korea.
C) In Study 2, you recruit participants from the United States and United Kingdom as well as a small-scale, less industrialized cultural group in Indonesia.
D) In Study 2, you recruit participants from the same cultures (the United States and United Kingdom) but expand your set of photographs to include emotional expressions of surprise and fear.
E) You present twice as many emotion photographs in Study 2 as you did in Study 1.