Men must fancy shorter women! No Men fancy Women, who are shorter on average.
That's not what the theory proposes. The proposition is that taller than average people will preferentially select shorter than average partners. The average per couple comes to 5'8" arbitrarily due to the average for all people being 5'8" in the study group, but the "average couple size theory" proposes that the distribution curve either side of this average is more sharply peaked for couples than for individuals.
That's not what the theory proposes. The proposition is that taller than average people will preferentially select shorter than average partners. The average per couple comes to 5'8" arbitrarily due to the average for all people being 5'8" in the study group, but the "average couple size theory" proposes that the distribution curve either side of this average is more sharply peaked for couples than for individuals.