Factors Affecting Attraction in Romantic Relationships

Relationships is an optional topic on AQA A-level Psychology (Paper 3, Option 1), and its first section asks a simple question: what makes one person attracted to another? The specification names three factors you must be able to describe and evaluate — self-disclosure, physical attractiveness (including the matching hypothesis), and filter theory.

Each factor is a different lens on the same problem. Self-disclosure explains how attraction deepens as two people reveal themselves to each other. Physical attractiveness explains the pull of appearance and the choices people make about who is "in their league". Filter theory explains how we sift a huge pool of possible partners down to the one or two we actually pursue.

Factor	Core idea	Key researchers
Self-disclosure	Attraction grows through gradual, reciprocal sharing	Altman & Taylor
Physical attractiveness	Appearance matters; we match with similar-level partners	Dion et al.; Walster et al.
Filter theory	We narrow available partners through a series of filters	Kerckhoff & Davis

This lesson covers only the three factors on the current specification. Evolutionary explanations and sexual selection have been removed from AQA 7182 and are not assessed.

Self-disclosure means revealing personal, intimate information about yourself to a partner — your fears, your past, what matters to you. Sharing these details signals trust, and receiving them in return builds intimacy.

The underlying theory is social penetration theory (Altman & Taylor). It compares getting to know someone to peeling back the layers of an onion. Relationships develop as disclosure gradually increases in two dimensions:

• Breadth — the range of topics you are willing to open up about.
• Depth — how personal and revealing those disclosures become.

Early on, breadth is narrow because too much depth too soon feels threatening. As trust grows, partners disclose more widely and more deeply, penetrating toward each other's true selves.

Reciprocity is essential. Reis and Shaver argued that for a relationship to develop, disclosure must be a two-way process: one partner reveals something, the other responds with their own disclosure and with understanding. A balance of give and take deepens intimacy.

Self-disclosure is not just talking a lot. It is the reciprocal, gradually deepening exchange of personal information that builds trust between two people.

Research supports the link. Sprecher and Hendrick found strong positive correlations between relationship satisfaction and the level of self-disclosure — couples who disclosed more, and who felt their partner disclosed to them, reported more satisfying relationships.

Physical attractiveness is widely important in attraction, and part of its power comes from how it shapes our other judgements about a person.

The halo effect describes this bias. Dion et al. found that people assume physically attractive individuals also have desirable personality traits — that they are kinder, more sociable and more successful. Dion summed this up as the belief that "what is beautiful is good". The attractiveness acts like a halo, colouring everything else we assume about the person, which in turn makes us behave more positively toward them.

Because this expectation is so consistent, attractive people are often treated well, which can encourage the very confidence and warmth we assumed they had in the first place — a self-fulfilling prophecy.

Term	Meaning
Halo effect	Assuming attractive people have other positive traits
"What is beautiful is good"	Dion et al.'s phrase capturing the halo effect for attractiveness

The halo effect is a cognitive bias, not a claim that attractive people really are kinder. It is about the assumptions the perceiver makes, not the target's actual character.

If everyone simply pursued the most attractive partner available, the most attractive people would be overwhelmed and everyone else would be rejected. In practice, people are more strategic than that.

The matching hypothesis (Walster et al., 1966) proposes that people tend to choose partners of a similar level of physical attractiveness to their own. We weigh two competing pressures:

• The desire for the most physically attractive partner we can get.
• The fear of rejection by someone who is "out of our league".

The compromise is to pursue someone roughly matched to our own perceived attractiveness — attractive enough to be desirable, but realistic enough that we are unlikely to be turned down.

Consider two people rating their own and potential partners' attractiveness out of 10:

Person	Self-rating	Ideal partner	Realistic choice
A	7/10	10/10	around 7/10
B	4/10	10/10	around 4/10

Both would love a 10, but each settles on a partner close to their own level to minimise the risk of rejection. The result across a population is broadly matched couples.

The matching hypothesis is about physical attractiveness, not personality. Do not confuse it with complementarity, which is about needs fitting together.

Filter theory (Kerckhoff & Davis, 1962) explains how we move from an enormous number of possible partners to the small number we actually consider. We start with a field of availables — everyone we could theoretically date — and narrow it to a field of desirables by passing candidates through a series of filters. The filters matter at different stages, in this order:

1. Social demography — factors such as proximity, social class, education and religion. This filter operates first, narrowing the field to people we are realistically likely to meet and who share our background, so we tend to find them more familiar and similar.
2. Similarity in attitudes and values — most important in the early stages of a relationship. Sharing core attitudes encourages deeper communication and self-disclosure; when partners have little in common, the relationship often stalls.
3. Complementarity — the ability to meet each other's needs, so that the traits one partner lacks are supplied by the other ("opposites that fit"). This matters most in longer-term relationships, where feeling that together you form a whole strengthens commitment.

Remember the order by when each filter bites: demography decides who you meet, similarity of attitudes matters early, and complementarity matters later.

You must be able to evaluate these factors (AO3), not just describe them. Aim for developed points that state the criticism, give the evidence, and explain what it means for the theory.

Self-disclosure — research support but correlational. Sprecher and Hendrick found associations between disclosure and satisfaction, which supports the theory. However, correlation cannot show that disclosure causes satisfaction; it is equally possible that satisfied partners simply disclose more. There is also a cultural bias: Tang et al. reviewed studies showing that people in some collectivist cultures self-disclose less than in individualist cultures yet still report satisfying relationships, so the theory may not be universal.

Matching hypothesis — mixed support. Walster et al.'s original "computer dance" study did not fully support the hypothesis: when partners were paired randomly, participants rated the most physically attractive partners most highly regardless of their own level, rather than preferring a match. Later work by Taylor et al. on online daters found people frequently tried to arrange dates with partners more attractive than themselves, again challenging the idea of strict matching.

Filter theory — support but replication problems. Kerckhoff and Davis's original longitudinal study of student couples supported the filters. However, later studies failed to replicate the findings, which questions the theory's reliability. The rise of online dating is a further problem: it hugely widens the field of availables and lets people meet others far outside their local demographic, weakening the social demography filter the theory places first.

A recurring weakness across all three factors is that much of the research relies on self-report and correlational data, so it is difficult to establish cause and effect.

1. Describing evolutionary or sexual-selection explanations

Evolutionary explanations for partner preferences, including sexual selection, have been removed from AQA 7182. Writing about them earns no credit for this topic and wastes exam time. Stick to self-disclosure, physical attractiveness and filter theory.

2. Getting the filter order wrong

The filters run social demography, then similarity in attitudes, then complementarity. A common slip is to swap the last two: similarity in attitudes matters early, and complementarity matters later. State when each filter operates, not just that it exists.

3. Treating the matching hypothesis as being about personality

The matching hypothesis is about physical attractiveness — choosing a partner of a similar attractiveness level to your own. Do not describe it as matching personalities; that idea belongs to complementarity in filter theory.

4. Presenting correlational findings as proof of cause

Studies like Sprecher and Hendrick's are correlational. Saying self-disclosure "makes" people satisfied overstates the evidence. Frame it as an association, and note that the direction of causation is unclear, to show genuine evaluative understanding.