From Hill and Buss (2008):

 Ratings of Desirability/Attractiveness of Opposite-sex Person

                   Participant's Sex

                 Male            Female

Picture

Condition

(Opposite-sex

 Target)

  Target

 alone           5.44 a            3.64 c 

 Target with

 Same-sex        5.45 a            3.91 d

 others

 Target with

 Opposite-sex    5.02 b            4.72 e

 others