Final answer:
Potential mates are most attractive if they are kind, supportive, secure, and humorous; intelligence is not specifically listed as a trait increasing attractiveness by Klohnen and Luo.
Step-by-step explanation:
According to Klohnen and Luo, potential mates were rated as most attractive if they exhibited traits such as being kind and supportive, secure, and having a sense of humor. Intelligence was not specifically mentioned as a trait that increased ratings of attraction. This research aligns with the idea that, along with physical attractiveness, social traits are also important in mate selection.
People tend to look for partners whom they perceive as equals in both physical attractiveness and social desirability, known as the matching hypothesis. In addition to physical traits like facial symmetry and body shape, social traits such as warmth, social skills, and leadership qualities are also considered attractive when looking for potential mates.