Openness in Adolescence

Adolescence is where openness comes into its own. The arrival of what Piaget called formal operational thought — the capacity to reason about abstractions, hypotheticals, and ideals — gives the high-openness teenager a vast new playground, and they tend to use it. This is the age of the all-night conversation about whether anything is real, the sudden conversion to a cause or an aesthetic, the notebooks full of lyrics and theories. Soto and colleagues find that openness is generally rising across these years toward an early-adulthood peak, and in the open adolescent that rise is felt as an intoxicating widening of the possible.

Marcia's identity statuses make sense of why this matters. The central work of adolescence is identity, and the high-openness teenager is temperamentally suited to moratorium — the active, sometimes destabilising exploration of values, beliefs, and selves before commitment. They try on ideologies, art forms, subcultures, and spiritual frameworks with real seriousness, and they are slower to foreclose on an inherited identity than their more conventional peers. This is a developmental strength, but it carries a cost: the open adolescent can feel unmoored, can mistake every new enthusiasm for a final answer, and can find the foreclosed certainty of others both enviable and faintly suffocating.

Socially and at school, the picture is mixed. High openness predicts engagement with the parts of education that reward originality and abstraction, and the open teenager often forms intense friendships organised around shared ideas and tastes. But the same trait can read as restlessness or pretension to teachers and peers who prize the concrete, and the open adolescent's tendency to question rules on principle rather than break them on impulse can put them at odds with authority in ways that have nothing to do with low conscientiousness. The disruption that Soto documented in adolescence touches conscientiousness and agreeableness more than openness, which tends to keep climbing — so the open teenager is often growing more curious precisely as they grow less reliable.

The intimate and first-romantic dimension is shaped by the same hunger. High-openness adolescents are often drawn to partners who are unusual, who promise access to new worlds, and they can romanticise intensity and depth over steadiness. The genuine gift of this stage, for the open teenager, is permission: adolescence is the one period where society half-expects the wholesale trying-on of selves, and a young person high in openness who is given room to explore without being rushed toward premature closure tends to arrive at an identity that is genuinely theirs rather than merely handed down.

Patterns to recognise

• ◈Formal operational thought opens a vast new playground of abstraction and ideals (Piaget)
• ◈Openness keeps climbing toward an early-adulthood peak even as conscientiousness dips (Soto)
• ◈Temperamentally suited to moratorium — active exploration of values before commitment (Marcia)
• ◈Questions rules on principle rather than breaking them on impulse — distinct from low conscientiousness

Reflection questions

The developmental context

Adolescence briefly interrupts the long climb toward maturity. Soto and colleagues documented a disruption — a temporary dip in conscientiousness and agreeableness and a rise in neuroticism, especially in early-to-mid adolescence — before the trends reverse. James Marcia's identity statuses frame the parallel psychological task: the teenager moves between foreclosure, moratorium, and achieved identity, and trait expression is bound up with that search. Rank-order stability is still only moderate, so this is a stage of genuine flux.

The Big Five emerged from the lexical tradition and were given their modern measurement form by Paul Costa and Robert McCrae’s NEO-PI-R, with the lifespan picture filled in by Brent Roberts, Daniel Mroczek, Christopher Soto and colleagues. Read this page as one developmental lens, not a verdict: each trait is a continuum rather than a category, mean levels shift in patterned ways across the lifespan, and a person’s standing describes a tendency relative to others rather than a fixed type.