> In terms of construction scores (from 1 to 10 where 10 represents a perfectly built trolley), men averaged 8.9 with instructions, 7.6 without; the women avera

> In terms of construction scores (from 1 to 10 where 10 represents a perfectly built trolley), men averaged 8.9 with instructions, 7.6 without; the women averaged 7.5 with, and 5.7 without. The women spent more time building and did a worse job, according to this study.