And that distinction helps explain why attraction may not increase endlessly with IQ.
The Study That Challenged the Idea That More Intelligence Is Always Better
The 2019 study involving 214 young adults deserves particular attention because it examined more than intelligence alone.
The paper, titled Exceptional Intelligence and Easygoingness May Hurt Your Prospects: Threshold Effects for Rated Mate Characteristics, was written by psychologists Gilles E. Gignac and Clare L. Starbuck from the University of Western Australia.
It was published in the British Journal of Psychology, with an earlier online publication date in August 2018.
The researchers investigated four characteristics commonly regarded as desirable in romantic partners: intelligence, kindness, physical attractiveness, and easygoingness.
Instead of simply asking participants whether they valued each characteristic, they examined how desirable those characteristics were at different levels.
This distinction matters.
A person might say that kindness is extremely important in a relationship, but that statement alone does not reveal whether someone described as extraordinarily kind would be considered more attractive than someone described as very kind.
Similarly, saying that intelligence is desirable does not necessarily mean that the highest possible intelligence will produce the highest possible attraction.
The study found that average desirability ratings for all four characteristics reached their highest point at the 90th percentile.
However, the researchers observed an important difference when comparing the 90th and 99th percentiles.
Intelligence and easygoingness showed statistically significant reductions in desirability ratings at the highest level.
Kindness and physical attractiveness did not show the same statistically significant reduction.
This finding suggested that certain desirable characteristics may reach a point beyond which additional increases provide little perceived romantic benefit.
The authors interpreted the results as broadly consistent with a threshold hypothesis.
Importantly, the researchers did not establish that exceptional intelligence directly causes romantic rejection.
Their findings concerned evaluations of hypothetical partner characteristics, not actual relationship outcomes.
They also did not demonstrate that exceptionally intelligent men are less desirable than exceptionally intelligent women. The study examined preferences among participants of both sexes rather than establishing a uniquely male disadvantage.
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Understanding the Threshold Hypothesis
The threshold hypothesis offers a useful way to understand why certain attractive qualities may become less valuable beyond a particular point.
Imagine that someone is searching for a romantic partner who is financially responsible.
A person who consistently manages money carefully may be considered highly desirable.
However, becoming increasingly obsessed with saving money might eventually create difficulties.
Someone who refuses to spend anything on shared experiences could be perceived as less compatible, even though financial responsibility itself remains attractive.
The same general principle can apply to other traits.
Confidence is desirable, but extreme confidence may sometimes be interpreted as arrogance.
Ambition is attractive to many people, but excessive dedication to professional achievement may raise concerns about time available for relationships.
Independence can be appealing, but an extreme preference for independence might make emotional intimacy more difficult.
These examples illustrate a possible psychological mechanism; they are not findings established by the intelligence study.
The underlying idea is that people evaluate characteristics according to how those characteristics might affect a relationship.
Intelligence offers many advantages, but a potential partner may not assume that every additional increase in intellectual ability produces an equally valuable benefit.
Once someone is already perceived as highly capable, thoughtful, and intellectually engaging, further increases in IQ may matter relatively little.
At that stage, other characteristics may become more important.
Does this person listen carefully?
Can they communicate their feelings?
Are they considerate when disagreements arise?
Do they enjoy spending time together?
Can they balance personal interests with shared responsibilities?
These questions may be more relevant to the daily experience of a relationship than whether someone's cognitive abilities rank in the top 10% or the top 1%.
The threshold hypothesis therefore does not suggest that intelligence is undesirable.
It suggests that romantic preferences may reflect a balance between different needs.
Why Exceptional Intelligence Might Sometimes Create Concerns About Compatibility
One possible explanation for the findings involves perceived compatibility.
Compatibility is not simply a matter of sharing the same hobbies or having similar personalities.
It also involves how comfortably two people communicate, negotiate differences, and understand one another's perspectives.
When someone imagines dating a person with exceptionally high intelligence, they may make assumptions about what that relationship would be like.
For example, they might wonder whether conversations would feel intellectually unequal.
They might worry that their interests would seem unimportant.
They might imagine that their partner would prefer discussing complicated subjects rather than enjoying ordinary activities.
They might even assume that a highly intelligent person would have unusually demanding expectations.
These concerns could influence attraction before any real interaction takes place.
Yet such assumptions should not be confused with facts.
A high IQ does not mean that someone is incapable of enjoying everyday conversations.
It does not establish that someone is emotionally distant, judgmental, or socially awkward.
An exceptionally intelligent person may enjoy simple pleasures, appreciate humor, and communicate with extraordinary sensitivity.
The relationship between intelligence and social functioning is considerably more complicated than popular stereotypes suggest.
Nevertheless, imagined compatibility may influence hypothetical dating preferences.
When people evaluate someone based only on a description, they must fill in missing information.
If the description emphasizes extraordinary intelligence without mentioning warmth or social skills, participants may interpret the characteristic through their own expectations.
That possibility is one reason researchers must be careful when interpreting hypothetical attraction ratings.
A participant's response may reflect not only their preference for intelligence but also the additional personality characteristics they imagine accompany it.
This explanation remains a hypothesis rather than a demonstrated cause of the observed preference pattern.
The study did not conclusively establish why participants rated the 99th percentile less favorably.
The Difference Between Being Intelligent and Making Someone Feel Understood
There is an important difference between possessing intellectual ability and creating emotional connection.
Intelligence can help someone understand complicated information.
Emotional connection requires something more personal.
It involves recognizing another person's feelings, responding appropriately, showing concern, and building a sense of trust.
Imagine someone describing a difficult day at work.
Their romantic partner could respond by analyzing the situation logically, identifying the causes of the problem, and offering several practical solutions.
That response might be useful.
But perhaps the person does not immediately want solutions.
Perhaps they want reassurance.
They want someone to acknowledge that the experience was frustrating.