The Theoretical Background of Self-Disclosure
Self-disclosure is a concept systematized by Sidney Jourard in his 1971 book The Transparent Self, and it refers to the act of intentionally conveying personal information to another person, whether that is one's thoughts, feelings, experiences, or values. Jourard argued that self-disclosure is indispensable both to psychological health and to the quality of one's relationships. Self-disclosure has two dimensions: depth, running from surface-level information to deep feeling, and breadth, meaning the range of topics covered. Both increase as a relationship develops, and the two can move at different rates, so that a couple may talk about a great many topics while touching none of them deeply. The social penetration theory of Irwin Altman and Dalmas Taylor, published in 1973, likened the development of a relationship to peeling the layers of an onion, explaining that intimacy forms as disclosure proceeds gradually from the superficial layers toward the deeper ones. Self-disclosure is not a one-way act. It follows a principle of reciprocity: when one person discloses, the other tends to answer with disclosure of comparable depth.
How Self-Disclosure Produces Intimacy
On the mechanism by which self-disclosure generates intimacy, the research of Arthur Aron and colleagues supplies important findings. In Aron's 36 questions experiment of 1997, two strangers answered a series of questions that grew progressively deeper in disclosure, and a strong sense of intimacy formed in a mere 45 minutes. The mechanism is explained through three pathways: self-disclosure functions as a declaration of trust in the other person; it gives the other person the feeling of having been chosen as someone special; and shared vulnerability strengthens the bond between them. That said, the effects of self-disclosure are context-dependent. Disclosing at excessive depth in the early stages of a relationship can leave the other person feeling burdened, or can be evaluated negatively as a departure from social norms, which is the opposite of the intended effect. Appropriate self-disclosure carries a depth suited to the stage the relationship has reached, together with sensitivity to how responsive the other person actually is.
Differences in Disclosure Style and How Two People Fit
How much people disclose about themselves varies widely, and that variation lines up to some extent with personality traits and attachment styles. In terms of the Big Five, people high in extraversion and openness disclose more frequently and across a wider range of topics, while people high in agreeableness tend to be more responsive to what the other person discloses. People high in neuroticism are more likely to produce negative self-disclosure, meaning the expression of anxieties and worries. In terms of attachment style, securely attached people disclose with appropriate depth and reciprocity, anxiously attached people tend to disclose deeply at too early a stage, and avoidantly attached people tend to keep self-disclosure to a minimum. What matters most for a couple's compatibility is not the quantity of self-disclosure but responsiveness. Whether a partner can answer what has been disclosed with understanding, validation, and care does much to shape the quality of the intimacy that follows. What to look at before any difference in disclosure style is what comes back after something has been disclosed. The trouble comes when the more talkative one reads the other's silence as rejection and the more reserved one reads the other's questions as interrogation; matching quantities of disclosure is not a requirement. There is one exception: if what one of you has confided keeps going unanswered, that is better treated as a missing response than as a difference in quantity. For practical methods of deepening self-disclosure step by step, see the article "Self-Disclosure and Building Intimacy: The Art of Opening Up by Degrees", which treats the subject in detail.