Foundations of Attachment Theory

Attachment Theory was proposed by John Bowlby in the 1960s and developed through empirical research by Mary Ainsworth. It explains patterns of intimacy in human close relationships. Originally focused on infant-caregiver bonds, it was extended to adult romantic relationships by Hazan & Shaver (1987).

Adult attachment styles are classified along two dimensions. "Attachment Anxiety" reflects the intensity of fear of abandonment, while "Attachment Avoidance" reflects discomfort with intimacy. The combination of these two dimensions defines four styles.

Secure: Low in both anxiety and avoidance. Comfortable with intimacy and able to trust partners. Approximately 60% of adults fall into this category.

Anxious-Preoccupied: High anxiety, low avoidance. Craves intense closeness but is plagued by fear of abandonment. About 20%.

Dismissive-Avoidant: Low anxiety, high avoidance. Values independence and feels uncomfortable with intimacy. About 15%.

Fearful-Avoidant: High in both anxiety and avoidance. Desires closeness but simultaneously fears it. About 5%.

Correlations Between the Big Five and Attachment Styles

Noftle & Shaver (2006) reported clear correlation patterns between the Big Five and attachment styles.

Neuroticism and attachment anxiety: The strongest correlation (r = .40-.50). People high in neuroticism tend to also be high in attachment anxiety. Emotional instability manifests as "fear of abandonment" in romantic contexts.

Extraversion and secure attachment: Positive correlation (r = .20-.30). Highly extraverted people are more likely to have secure attachment. The accumulation of social experiences is thought to foster confidence in interpersonal relationships.

Agreeableness and attachment avoidance: Negative correlation (r = -.25-.35). People low in agreeableness tend to be high in attachment avoidance. Low trust and empathy toward others manifests as resistance to intimacy.

Conscientiousness and secure attachment: Positive correlation (r = .15-.25). Highly conscientious people are more likely to have secure attachment. Self-discipline and responsibility support commitment to relationships.

Openness: Relatively weak correlation with attachment styles (r <.15). Intellectual curiosity operates as a dimension independent of attachment patterns.

Attachment Style Combinations and Relationship Quality

The combination of attachment styles within a couple significantly affects relationship quality.

Secure × Secure: The most satisfying combination. Both partners trust each other, maintain appropriate distance while enjoying intimacy, and handle problems constructively when they arise.

Anxious × Avoidant: The most unstable combination. The more the anxious partner pursues closeness, the more the avoidant partner withdraws, and the greater the distance, the more the anxious partner's fear intensifies - forming a "pursue-withdraw pattern." This combination is surprisingly common because each is drawn to what the other "lacks."

Anxious × Anxious: Initially bonded by intense passion, but mutual anxieties amplify each other, risking escalating jealousy and possessiveness.

Secure × Insecure: The secure partner functions as a "safe base," and gradual correction of the insecure partner's attachment pattern toward "earned security" can be expected.

Inferring Attachment Style from the Big Five

It is possible to roughly infer your attachment style from this site's Big Five assessment results (though this is only a tendency - accurate determination requires specialized attachment scales).

Secure tendency: Low neuroticism (1-2), moderate to high extraversion (3-5), moderate to high agreeableness (3-5). Emotionally stable, able to trust others, with rich social experience. Related books can also be found at related books (Amazon).

Anxious tendency: High neuroticism (4-5), high agreeableness (4-5), extraversion varies. Large emotional swings, sensitive to others' evaluations, with a strong desire for connection.

Avoidant tendency: Low neuroticism (1-2), low agreeableness (1-2), low extraversion (1-2). Maintains emotional distance, values independence, feels uncomfortable with intimacy.

Fearful tendency: High neuroticism (4-5), low agreeableness (1-2). Desires closeness but simultaneously fears it, finding it difficult to trust others.

Can Attachment Styles Be Changed?

While attachment styles form based on childhood experiences, research shows they can change in adulthood.

Fraley et al. (2011)'s longitudinal study reported that approximately 30% of people showed significant changes in attachment style over a four-year period. The main drivers of change were: (1) long-term relationships with secure partners, (2) psychotherapy, and (3) significant life experiences (childbirth, loss, etc.).

From a Big Five perspective, decreases in neuroticism are thought to contribute to reduced attachment anxiety, while increases in agreeableness contribute to reduced attachment avoidance. In other words, the natural maturation of personality traits (which tends to occur with age) may also contribute to the stabilization of attachment styles.

Practically speaking, "becoming aware" of your own attachment patterns is the first step toward change. Understanding "why do I become anxious when my partner pulls away" or "why do I resist intimacy" enables conscious intervention in automatic reaction patterns.

Implications for Compatibility Assessment

The relationship between attachment theory and the Big Five indirectly supports the validity of this site's compatibility assessment.

Evaluating similarity in neuroticism indirectly assesses the degree of alignment in attachment anxiety levels. Similarity in agreeableness reflects alignment in attitudes toward intimacy.

In other words, couples with high Big Five compatibility are likely to also have good attachment style compatibility. This means that the relatively simple measurement of the Big Five enables multifaceted predictions about relationship quality.

However, since attachment styles are influenced not only by personality traits but also by past romantic experiences and childhood caregiving environments, there are aspects that the Big Five alone cannot capture. Please understand that this site's assessment results represent "compatibility from the perspective of personality traits" and are not a comprehensive evaluation that includes attachment patterns.