Jin predicts that people with highly symmetric faces will be rated as more attractive than people with less symmetric facial features.Is this hypothesis one- or two-tailed?
A) two-tailed, because it is directional
B) two-tailed, because it indicates there will be a difference and the direction
C) one-tailed, because it only indicates there will be a difference but not the direction
D) one-tailed, because it is directional

Question

Quizplus · Accepted Answer

The hypothesis that people with highly symmetric faces will be rated as more attractive is directional, as it predicts a specific direction of the relationship between facial symmetry and attractiveness. Therefore, the hypothesis is one-tailed, which means that the correct answer is D.

Jin Predicts That People with Highly Symmetric Faces Will Be