Difficulty: Introductory to Intermediate | Prerequisites: Basic understanding of social cognition. Helpful but not required: familiarity with evolutionary psychology basics.
This unit covers why we like and love the people we do, from simple proximity and familiarity effects through physical attractiveness, similarity, and reciprocity, all the way to the psychology of romantic love, attachment, and relationship maintenance. It connects backward to the mere-exposure effect in attitudes research and forward to equity and social exchange, which reappear in the conflict unit. You should have a working understanding of the two-factor theory of emotion.
We are drawn to people who are nearby (proximity), familiar (mere exposure), physically attractive (though this matters most for first impressions), similar to us, and who like us back. Love involves passion, intimacy, and commitment in varying proportions. Passionate love is intense but time-limited; companionate love is the long-term bond that sustains relationships. Secure attachment, perceived equity, and mutual self-disclosure are the three pillars of lasting relationships.
Need to belong
A motivation to bond with others in relationships that provide ongoing, positive interactions. Think of it as the fundamental human drive for social connection.
Ostracism
Acts of excluding or ignoring. Even "cyber-ostracism" by strangers causes measurable distress.
Proximity
Geographical nearness or functional distance. The single strongest predictor of friendship formation.
Mere exposure effect
The tendency for novel stimuli to be liked more after the rater has been repeatedly exposed to them. Familiarity breeds fondness, not contempt.
Matching phenomenon
The tendency to choose partners who are a "good match" in attractiveness and other traits.
Physical-attractiveness stereotype
The presumption that physically attractive people possess other socially desirable traits. In short: "what is beautiful is good."
Complementarity
The popularly supposed tendency for each partner to complete what is missing in the other. Research has been unable to confirm that opposites attract.
Ingratiation
The use of strategies such as flattery to gain another's favour.
Reward theory of attraction
We like those whose behaviour is rewarding to us or whom we associate with rewarding events.
Passionate love
A state of intense longing for union with another. Passionate love equals lust plus attachment.
Companionate love
The affection we feel for those with whom our lives are deeply intertwined. It replaces passionate love as the long-term bond.
Two-factor theory of emotion
Arousal multiplied by its cognitive label equals the emotion experienced. Relevant because any source of arousal can intensify passionate feelings if attributed to a romantic stimulus.
Secure attachment
Rooted in trust and marked by intimacy.
Avoidant attachment
Marked by discomfort with or resistance to closeness. An insecure style.
Anxious attachment
Marked by anxiety or ambivalence about relationships. An insecure style.
Equity
A condition in which outcomes are proportional to contributions. Perception of equity is important to relationship satisfaction.
Self-disclosure
Revealing intimate aspects of oneself to others.
Disclosure reciprocity
The tendency for one person's depth of self-disclosure to match that of their conversational partner.
The need to belong is a fundamental human motivation. Our sense of wellbeing rests on a balance of three needs: autonomy, competence, and belonging. We pursue belonging when we lack it and seek it less once satisfied.
When the need to belong is thwarted by ostracism, the social pain is real and measurable. Ostracised people show deficits in the brain mechanisms that inhibit unwanted behaviour. Rejected children are more likely to have self-regulation problems and to act aggressively. Exclusion hurts longer for anxious people and for younger adults.
Proximity is the single strongest predictor of who becomes friends. People who interact frequently are far more likely to become friends than enemies. Anticipating interaction boosts liking, which is adaptive: it increases the chance of a rewarding relationship.
Proximity works partly through the mere exposure effect: repeated exposure to any stimulus increases liking for it. The effect is even stronger when exposure happens without conscious awareness. With incessant repetition, liking eventually drops, but the general principle is that familiarity breeds fondness.
Physical attractiveness predicts dating frequency, moderately well for women, modestly for men. In speed-dating studies, attractiveness matters equally to both sexes. Once people know each other through work or friendship, they focus more on unique qualities.
The matching phenomenon describes the tendency to pursue partners of similar attractiveness.
The physical-attractiveness stereotype ("what is beautiful is good") means attractive people are assumed to be kinder, more competent, and more sociable. Children learn this early. After cosmetic surgery, people are judged not only more attractive but also kinder and more likeable.
Despite this stereotype, attractive people do not differ from others in basic personality traits, though they tend to be somewhat more socially polished, likely a result of self-fulfilling prophecies.
Attractiveness is partly subjective and partly universal. From an evolutionary perspective, beauty signals health, youth, and fertility. Perfectly average faces are rated as especially attractive.
Similarity vs. complementarity:
"Birds of a feather" is strongly supported. Friends, couples, and spouses share attitudes, beliefs, values, and traits. Greater similarity predicts greater relationship satisfaction and lower divorce rates.
The idea that opposites attract (complementarity) is not supported by research. Some complementarity may develop over time, but initial attraction runs on similarity.
Liking those who like us:
Liking is reciprocal. Learning that someone likes you tends to produce reciprocal affection.
We are sensitive to criticism: students prefer someone who says eight positive things to someone who says seven positive things and one negative one.
Ingratiation (flattery) can work, though we tend to perceive criticism as more sincere than praise.
Reward theory of attraction ties it all together: we like people whose presence is rewarding, whether through proximity, attractiveness, similarity, or mutual liking.
Loving is more complex than liking. Long-term love is not merely an intensification of initial liking; it involves distinct components.
Sternberg's triangular theory of love identifies three components:
Passion: the physical and emotional arousal component.
Intimacy: the warmth, closeness, and sharing component.
Commitment: the decision to maintain the relationship over time.
Different combinations produce different kinds of love. Romantic love has passion and intimacy but may lack commitment. Companionate love has intimacy and commitment but less passion.
Passionate love:
A state of intense longing for union with another. Passionate lovers are absorbed in each other, ecstatic when reciprocated, disconsolate when it is lost.
Passionate love = lust + attachment.
The two-factor theory of emotion is relevant: arousal from any source (exercise, fear, a roller coaster) can intensify passionate feelings, provided you attribute the arousal to a romantic stimulus.
Passionate love is both biological (hormones, neural reward circuits) and psychological.
Men tend to fall in love more readily than women. Once in love, women are typically as emotionally involved as their partners.
In some cultures love follows marriage rather than preceding it.
Companionate love:
The flow and ebb of romantic love follows a pattern similar to addiction: intense highs that gradually level off.
Companionate love is the deep affection we feel for those with whom our lives are intertwined. It emerges as passionate love fades.
Those who marry for love report diminishing feelings after roughly five years. Those in arranged marriages often report increasing love over the same period.
Attachment:
Infant attachment styles lay a foundation for adult relationships.
Secure attachment: rooted in trust, marked by intimacy and comfort with closeness.
Avoidant attachment: discomfort with closeness, emotional distance. An insecure style.
Anxious attachment: anxiety about abandonment, ambivalence about closeness. An insecure style.
Equity:
Relationships thrive when both partners perceive that outcomes are proportional to contributions.
Equity does not require equal outcomes, only proportional ones.
In established, long-term relationships, partners are less concerned with short-term equity.
Perceived equity is important to relationship satisfaction.
Self-disclosure:
Deep relationships are characterised by mutual self-disclosure: revealing intimate aspects of oneself.
Disclosure reciprocity means one person's openness tends to draw matching openness from the other.
Self-revealing couples tend to enjoy the most satisfying and enduring relationships.
How relationships end:
Relationships end when people compare their current situation unfavourably to the support they imagine elsewhere.
Individualistic cultures have higher divorce rates than communal cultures, partly because individualists expect more passion and personal fulfilment from marriage.
The detachment process follows a predictable sequence: agitated preoccupation with the lost partner, then deep sadness.
"Opposites attract." Research consistently finds that similarity, not complementarity, predicts attraction and relationship satisfaction.
"Physical attractiveness only matters to shallow people." Attractiveness predicts dating frequency across cultures and orientations. The bias is largely unconscious, and the "beautiful is good" stereotype is learned early.
"Passionate love lasts forever if you find the right person." Passionate love follows an addiction-like curve and naturally fades. Lasting relationships transition to companionate love.
"Familiarity breeds contempt." The mere exposure effect shows the opposite. Repeated exposure generally increases liking, though extreme overexposure can eventually reduce it.
Be able to explain the mere exposure effect and how it connects to proximity.
Know the matching phenomenon and the physical-attractiveness stereotype, including evidence that attractive people are not different in personality.
Distinguish passionate from companionate love and know Sternberg's three components.
Expect a question on the two-factor theory of emotion applied to romantic attraction (misattribution of arousal).
Know the three attachment styles and be able to link them to adult relationship patterns.
Equity and self-disclosure (with disclosure reciprocity) are commonly tested as pillars of lasting relationships.
Fill in the blank: The single strongest predictor of friendship formation is ________. (Proximity.)
True or false: The mere exposure effect is stronger when people are consciously aware of the repeated exposure. (False. It is stronger when exposure occurs without awareness.)
Fill in the blank: Sternberg's three components of love are passion, ________, and ________. (Intimacy; commitment.)
True or false: Research supports the idea that opposites attract. (False.)
Fill in the blank: The tendency for one person's self-disclosure to match their partner's is called ________. (Disclosure reciprocity.)
Q: A person goes on a first date that involves a scary film. Afterwards, they report feeling more attracted to their date than expected. Which theory explains this, and how?
A: The two-factor theory of emotion. The scary film produced physiological arousal (racing heart, heightened alertness). Because the arousal occurred in a romantic context, the person misattributed some of it to attraction toward their date, intensifying the feelings of passionate love.
Q: Explain why proximity leads to liking, using at least two mechanisms.
A: Proximity leads to liking through (1) increased interaction, which gives people opportunities to discover shared interests, and (2) the mere exposure effect, which means repeated contact with someone, even without deep conversation, increases familiarity and fondness. Additionally, anticipating future interaction motivates people to view the other person positively.
Q: Describe the three attachment styles and explain how each might manifest in an adult romantic relationship.
A: Securely attached adults find it easy to get close to others and are comfortable with intimacy and interdependence. Avoidantly attached adults are uncomfortable with closeness and may seem emotionally distant or dismissive of partners' needs. Anxiously attached adults crave closeness but worry about abandonment, leading to clinginess or jealousy.
Q: A couple married for 15 years reports feeling less passionate but deeply bonded. Is their relationship failing? Explain using course concepts.
A: No. They are experiencing the normal transition from passionate love to companionate love. Passionate love follows an addiction-like trajectory and naturally diminishes. Companionate love, the deep affection for someone with whom your life is intertwined, is the long-term bond that sustains satisfying relationships. Research on arranged marriages suggests companionate love can grow stronger over time.
Attraction ties back to social cognition: the physical-attractiveness stereotype is a form of halo effect, and the mere exposure effect connects to attitudes research on familiarity and persuasion. Equity reappears in the conflict and peacemaking unit as perceived injustice. Attachment theory connects to developmental psychology and the broader need-to-belong framework, which also appears in the groups unit (why people form groups in the first place).
Need to belong, ostracism, social exclusion, cyber-ostracism, proximity, functional distance, mere exposure effect, familiarity, physical attractiveness, matching phenomenon, physical-attractiveness stereotype, halo effect, beauty bias, similarity, complementarity, opposites attract, reciprocal liking, ingratiation, reward theory of attraction, passionate love, companionate love, Sternberg, triangular theory, two-factor theory of emotion, misattribution of arousal, secure attachment, avoidant attachment, anxious attachment, Bowlby, equity, social exchange, self-disclosure, disclosure reciprocity, divorce, detachment, individualism and relationships