For example, this sample of 60-year-old men report that it is acceptable to fantasize about women in their 20s, which the rule would say is unacceptable.
But fantasies, of course, are not generally subject to public scrutiny and the rule is only designed to calculate what is socially acceptable —so this discrepancy is not necessarily a failure of the rule.
Even when fantasizing, such women’s minimum age preference remains over 30.
The rule’s calculated minimum acceptable partner ages seem to fit men better than women.
Those age preferences consistently hover around the values denoted by the rule (the black line).
The rule overestimates the perceived acceptability of men becoming involved with older women.
With some quick math, the rule provides a minimum and maximum partner age based on your actual age that, if you choose to follow it, you can use to guide your dating decisions.
The utility of this equation is that it lets you chart acceptable age discrepancies that adjust over the years. Let's examine it: How well does the rule reflect scientific evidence for age preferences?
This rules states that by dividing your own age by two and then adding seven you can find the age boundary: Take your age, subtract 7, and double it.
So for a 24-year old, the upper age limit would be 34 (i.e., 17 * 2).