Identity vs. role confusion is the fifth of Erik Erikson’s eight psychosocial stages, running from about 12 to 18 years old. If an adolescent explores roles and then commits to ones that feel their own, they develop a stable identity and the virtue of fidelity. If they never settle on commitments of their own, they develop role confusion instead, a fragmented sense of self.
How Does an Adolescent Develop Identity or Role Confusion?
The Adolescent’s Social World
Identity is not built alone. The raw material comes from the people and institutions around an adolescent: family, peers, school and the wider society.
Family and other childhood figures supply the first material, because children identify with the important people around them. Erikson saw ego identity as a synthesis of those identifications that cannot be reduced to any one of them (Erikson, 1968).
Peers add roles of their own. Being part of a peer group is one of the roles a young person must fit into a single picture of themselves.
School and society set the terms. They shape how much time young people get to try things out, and how clearly adulthood is marked.
From all of them, an adolescent needs three things. Roles and values to try on. Time and permission to try them. Recognition of a place in adult society.
That last need explains why these people matter so much now. Finding a place in that society is the task itself. Branje (2022) describes the work as supported, or undermined, by family and peer relationships.
Adolescents are also in an in-between position. In Western societies they are freed from most adult responsibilities, yet not granted adult status.
The prefrontal cortex, which supports impulse control, judgement and self-reflection, is still maturing too. It reaches full maturity only in the twenties (Giedd et al., 1999). The tools for the job may still be under construction.
What the Adolescent Is Working Out
Why does this stage come now?
Two changes arrive together: puberty and a new ability to reason abstractly. They make a young person acutely aware of their place in adult society. Research suggests the work often runs on into young adulthood (Kroger et al., 2010).
The stage before prepares the ground. Industry vs. inferiority, in middle childhood, is meant to leave a child with a basic sense of competence at working towards valued goals. That competence makes the search for an identity less threatening.
That leaves one question to settle.
Who am I, and who will I be?
Erikson believed adult personality forms largely by choosing and committing to a role in life, often an occupation. There are two possible answers:
- Ego identity is the sense that your roles (son or daughter, student, friend, peer, future worker) add up to one self that stays recognisably you over time.
- Role confusion is the opposite. The different pictures of yourself never quite fuse, leaving a fragmented, “centreless” sense of who you are.
Erikson called the conflict at the heart of each stage a crisis. He meant a turning point, not a catastrophe.
His stages are called psychosocial because each one pairs a person’s inner development with the demands of their social world.
A stage that goes well leaves a lasting strength, which Erikson called a virtue. Here it is fidelity: the ability to commit yourself to other people and accept them, even when you hold different beliefs.
Intimacy vs. isolation, in young adulthood, comes next. Erikson claimed it needs a consolidated identity first. You can read the full sequence in Erik Erikson’s stages of psychosocial development.
How a Settled Identity Develops
A settled identity grows out of a cycle that repeats over months and years. It is not a single dramatic event.
First, the adolescent explores. Exploration means actively examining alternative roles, values and beliefs, rather than simply accepting those handed down.
Next, the people and settings around them respond. A psychosocial moratorium, a socially accepted time out from adult responsibility, is meant to give room to work out an identity. In Western societies it mostly comes through extended education.
Variety may help too. A settled identity was more common in settings with a range of people and ideas (Kroger et al., 2010), although that comparison cannot prove cause.
Practitioners suggest adults can help by letting a young person question an inherited path, and by treating doubt as possible exploring, not a deficit.
Then the adolescent commits. Commitment means making a firm, personally owned choice about a direction, such as a career, a set of values or a religious outlook. A strong commitment can be justified against alternatives the person considered and rejected.
The choice feels like theirs, so the different pictures of the self begin to fuse. The roles start to add up to one person.
Repeated over time, this builds an expectation: I know who I am, and I will still be recognisably me. That sense of continuity spreads into how the person plans, works and relates to others, and into how they see themselves.
Real life is untidier than the cycle suggests. Identity work usually runs slowly and keeps repeating, with spells of reconsidering (Branje, 2022).
How Role Confusion Develops
Role confusion grows when the same cycle breaks down. Erikson (1963) held that it results when an adolescent is acutely concerned with their place in adult society but cannot form a coherent commitment.
He argued that social conditions can create or intensify the crisis, not merely reveal it. The response the adolescent needs can be missing, mixed or wasted:
- Missing Structure: Most societies studied by anthropologists mark the move to adulthood with public ceremonies, called rites of passage. Western industrialised nations largely leave young people to find their own identity.
- The Maturity Gap: Young people reach biological maturity without being granted adult status, so they are expected to act responsibly while still treated as immature (Curry, 1998).
- A Wasted Time Out: The moratorium is meant to ease the transition. It can have the opposite effect if the time is not put to identity-forming use.
A path with no room in it does the same. Picture a family’s approved route of good grades and a respectable career. It may leave a young person no way to work out who they are.
Help can also miss the mark. Career advisers note that piling more options on an anxious young person who is still exploring can backfire, adding to the distress.
Relationships matter too. Adolescents with less secure attachment to peers and to their mothers reported more identity confusion (Gandhi et al., 2016), although that link does not prove cause.
Without a commitment of their own, the pieces of the self never fuse. The question “Who am I?” has no self-chosen answer. Erikson called the result an inner war with the self (Erikson, 1968).
The expectation that forms is the opposite of a settled one. Thinking about adulthood becomes unwelcome. Effort loses its point. Close relationships feel risky.
Confusion can also feed itself. In one longitudinal study, confusion at one point predicted more reconsidering of existing commitments, and less confident exploring, later on (Bogaerts et al., 2019).
What Builds Identity or Role Confusion in Everyday Life?
Everyday Scenarios Compared
The cycle above plays out in ordinary situations. The table contrasts four of them. They illustrate the mechanism and are examples, not research findings.
| Everyday scenario | Builds ego identity | Builds role confusion |
|---|---|---|
| Choosing what to study or do next | Meeting varied people and ideas, trying a few fields, then choosing a path you can explain. | Drifting through the time out, or grabbing the first option just to end the uncertainty. |
| A family with fixed plans for your future | Questions about the plan are allowed, so the path you finally choose feels like your own. | The plan leaves no room to find your own identity, so a rejected role looks better than none. |
| Moving from school into adult life | A clear step marks the change, and you are treated as an adult from then on. | Responsible behaviour is expected, but adult status is not granted. |
| Choosing your style, music and opinions | Choosing them because they feel like you, and being able to say why. | Choosing them mainly to unsettle your parents, so opposition becomes your identity. |
In every row, the overall pattern matters more than any single moment. Identity forms gradually, and a young person can move forwards or backwards along the way.
Some confusion is normal too, as the outcomes section below explains.
Why Commitment Alone Does Not Build an Identity
Committing to a path is not enough on its own. A settled identity comes from exploring first, then choosing for yourself, in a setting with room for both.
Psychologist James Marcia (1966) called commitment without exploration foreclosure.
Take a young person who joins the family business, keeps the family’s religion and politics, and feels settled about all of it. Nothing was tried out, because it was always assumed.
From outside, this can look just like a settled identity. Both involve firm commitments. The difference shows when the commitment is put under pressure, as Marcia’s founding study below shows.
An Example: The Injured Athlete
Take a 16-year-old who has always been “the sporty one” in her family, praised since childhood for athletic ability. A serious injury ends her competitive career.
Erikson would not see this as the loss of a hobby. The injury strips away a commitment her sense of self was built around, and throws her back onto the identity task itself.
Sport used to supply a ready-made answer. Now she must work out who she is and what she stands for without it.
She might resolve it well. New commitments feel like her own choices: a different sport, a subject she is drawn to, friends not defined by athletics.
Or she might resolve it poorly, drifting without direction or clinging to an identity that no longer fits.
Either way, the crisis plays out in miniature.
Outcomes of Identity vs. Role Confusion?
A Settled Identity: What It Produces
A settled identity produces continuity. The person can hold past, present and future together. Today’s choices feel continuous with who they have been and who they are becoming.
Effort has a point, because they know what they are working towards and why.
Close relationships feel safe. A firm identity is the platform from which a person can merge part of their identity with another’s. The virtue it leaves behind is fidelity, commitment to others that survives disagreement.
Identity formation is also one strand of how the self-concept develops more broadly. See the self-concept for that wider picture.
Role Confusion: What It Produces
Erikson (1963) did not treat role confusion as one vague feeling of not knowing who you are. He traced it through four separate areas of life, each the mirror image of what a settled identity provides:
- Intimacy: Close relationships feel threatening, as if opening up might dissolve a fragile self. The result is stereotyped, low-investment relationships or outright isolation.
- Time Perspective: The sense that past, present and future fit together is lost. Change seems either impossibly far off, bringing procrastination and drift, or catastrophically close, bringing panic.
- Industry: Sustained work and study lose their point without a sense of what they are for. Some adolescents cannot concentrate for long, while others become frenetically absorbed in one activity.
- Negative Identity: The most extreme form: adopting a role the family or community rejects, because a bad identity feels better than none.
Erikson put the logic in one line: “a negative identity is better than no identity” (Erikson, 1968). A clearly bad identity is still recognisable. It draws a reaction from others and gives a definition that a formless, centreless self cannot supply.
It is a defensive resolution. It trades social approval for psychological coherence.
At the severe end, a young person may join a peer group defined by rule-breaking and drop the activities their family values. At the mild end, it might be a style, taste in music or set of opinions chosen mainly to unsettle parents.
Why Some Confusion Is Normal
No stage is ever won outright. The less healthy pull never fully disappears. A young person develops well to the extent that the balance tips towards identity.
So some confusion is a normal part of adolescence. Role confusion is not a diagnosis. Erikson saw it as a developmental risk that every adolescent faces to some degree.
It becomes a clinical concern only when it is severe, prolonged or never settles into a commitment.
The phrase “identity crisis” began in a clinic. It first named a loss of personal identity in servicemen who had broken down under combat stress and felt their lives no longer hung together (Erikson, 1968). Only years later did Erikson apply it to ordinary adolescents.
He saw ordinary and serious identity trouble as points on one continuum.
How common is serious trouble? Offer et al. (1988) surveyed adolescents’ self-image in ten countries. Serious identity disturbance affected only a minority. Most reported a broadly positive self-image despite the normal turbulence of the teenage years.
Marcia’s Four Identity Statuses
Erikson described the two poles but gave no way to tell where a particular young person stood. Marcia (1966) built that missing tool by crossing the two steps from the cycle: exploration and commitment.
Crossing them gives four identity statuses:
- Diffusion: No exploration and no commitment. Some diffuse young people drift carefree. Others are distressed by the lack of direction.
- Foreclosure: Commitment without exploration, taken over from parents or other childhood figures, as in the family-business example above.
- Moratorium: Active exploration without a settled commitment yet. Marcia borrowed Erikson’s word for an individual’s search, not for society’s time out.
- Achievement: Exploration followed by a self-chosen commitment the person can justify against alternatives they considered and rejected.
Marcia treated these as statuses, not fixed stages. A young person holds one at a time, in a given area of life, and can move between them, backwards as well as forwards.
Take the injured athlete again. A year of drifting with little concern would be diffusion. Trying several new activities and friendship groups without settling would be moratorium.
Choosing a new direction she can justify would be achievement. Adopting whatever a parent or coach suggests, without weighing it, would be foreclosure.
What’s the Evidence for the Identity Stage?
Erikson’s own evidence was clinical observation, not experiment. The stage became testable once Marcia turned it into measurable groups.
Overall, the research supports the core idea that adolescence and young adulthood are when identity is worked out.
It does not support the stronger claim that most people pass through an acute crisis and emerge resolved. The limitations below weigh that second finding.
Marcia’s Founding Study (Marcia, 1966)
Aim: To build a way of sorting young people into Erikson’s identity groups, and to test whether the groups differ in personality and behaviour.
Method: A 30-minute interview sorted 86 male college students into the four statuses by their exploration and commitment. All then did a stressful concept-attainment task, a goal-setting task, and questionnaires on authoritarianism (deference to authority) and self-esteem.
Results: Achieved participants did best under stress and set realistic goals. Foreclosed participants set unrealistic goals, scored highest on authoritarianism and lost the most self-esteem after failure. Diffused participants persisted least; moratorium participants were most anxious.
Conclusion: Exploration and commitment can be identified reliably and relate to real differences in performance, rigidity and self-esteem. It was the first empirical sign that Erikson’s identity idea picks out measurable differences.
This study turned a clinical idea into a research programme. Its most telling result is the contrast between foreclosed and achieved participants. Both were committed, yet they behaved differently under pressure. That suggests exploration matters, not commitment alone.
The limits are in the sample and the design. All 86 participants were male college students, and the interview covered only occupation, religion and politics.
The groups were identified rather than assigned, so the study shows that they differ, not that a status causes the difference.
A Large Survey of Role Confusion (Bogaerts et al., 2021)
Erikson’s own account could not say how confused a given adolescent was. Rosenthal et al. (1981) closed that gap with the Erikson Psychosocial Stage Inventory (EPSI), a questionnaire covering Erikson’s first six stages.
Its identity section has two scales. Synthesis captures feeling settled about who you are, and confusion captures feeling mixed up. They are related but not mirror images, so a person can score on both.
Aim: To chart how identity synthesis and confusion change from early adolescence to age 25, and to test their link with depressive symptoms.
Method: A cross-sectional survey, meaning people of different ages were compared at one time. 5,860 Belgian adolescents and young adults aged 12 to 25 completed the EPSI identity scales; 2,782 also completed a depressive-symptoms measure.
Results: Synthesis dipped in the early teens and rose into the early twenties, while confusion did the opposite. In early, middle and late adolescence alike, more confusion went with more depressive symptoms, and more synthesis with fewer.
Conclusion: Identity confusion is measurable, not just a clinical impression, and it tracks low mood throughout adolescence.
With nearly 6,000 participants and a questionnaire built on Erikson’s own ideas, this is a strong demonstration that role confusion can be measured. But everyone was measured once. So the study shows that confusion and low mood go together, not which comes first.
Low mood could colour how people describe themselves. Or insecure attachment could drive both.
Studies that follow the same people over time are the better test. One systematic review of them described links in both directions.
When it combined the results of nine studies, it found no clear link (Potterton et al., 2022). All 20 studies it covered were rated fair or poor quality, so the question stays open.
Strengths
The stage has four main strengths:
- Testable Statuses: Marcia’s four statuses turned a clinical narrative into measurable categories, giving researchers predictions they could actually test (Marcia, 1966).
- Clinical Relevance: Once measured, role confusion is linked to depressive symptoms (Bogaerts et al., 2021) and helps explain the link between insecure attachment and self-injury (Gandhi et al., 2016).
- Room for Change: Treating identity as a status, not a stage, allows regression, plateaus and reworking, which fits findings that some young people move backwards (Kroger et al., 2010).
- Durable and Revisable: Marcia’s version anchors 909 studies published by 2022, and the data forced real revisions, so the idea was specific enough to be tested (Maehler & Hernández-Torrano, 2025).
Limitations
Before working through each one, here is a one-line summary of the main limitations:
- The Crisis Is Overstated: Identity usually forms gradually and is often unfinished in young adulthood, so a dramatic crisis is not the typical route.
- Cultural Bias: The intensity of the crisis may be a product of Western, individualist societies, not a human universal.
- Gender Bias: Erikson built the stage from male clinical cases and put identity before intimacy, a sequence that fits many women less well.
- Hard to Disprove: Almost any outcome can be redescribed as a variant of the predicted process, which makes the theory difficult to test.
- Inconsistent Measurement: Different instruments do not always agree on who has explored, committed or become confused.
The Crisis Is Overstated
Kroger et al. (2010) pooled 124 studies from about four decades of research. Only about a third were identity-achieved by young adulthood.
In studies that followed the same people over time, the largest group showed no change at all. Moves backwards were more common than measurement error alone would predict.
Branje (2022) found a similar picture in a selective review of studies that follow individuals. Identity was fairly stable. Where it changed, it mostly moved towards stronger commitment.
Branje adds a caution. Stability between people does not rule out a spell of questioning in one person’s life. So the fairer criticism targets the word’s suggestion of a single acute episode.
So identity forms slowly, patchily and sometimes backwards. A dramatic crisis is not the typical route. That undercuts the claim that resolving identity is the defining task of adolescence.
Cultural Bias
Baumeister and Muraven (1996) argued that identity is an adaptation to social, cultural and historical context, not a fixed developmental achievement. How urgently someone must build an identity depends on how much their society demands self-definition.
Erikson himself conceded part of this. He blamed Western arrangements, such as the long education moratorium and the lack of rites of passage, for intensifying the crisis.
The implication is awkward for the labels. Where a culture prizes a relational or collective identity, commitment without individual questioning may be healthy. Marcia’s scheme would read that as immature foreclosure.
The research base is narrow too. Reviews call it heavily Western, cross-sectional and self-report (Maehler & Hernández-Torrano, 2025). So the crisis may describe adolescence under particular historical conditions, not adolescence in general.
Gender Bias
Gilligan (1982) argued that Erikson’s order, identity first and intimacy second, describes a typically male pathway. That path defines the self through separation and individual achievement. For many women, she argued, the self is known through relationships, so identity and intimacy develop together.
The theory’s source matters here. Erikson generalised wartime clinical observations of male servicemen into a sequence meant to apply to everyone.
Marcia’s own work shows the same gap. He admitted that his scheme fits women only loosely and men much better.
Archer (1989) found that the process, domain and timing of identity work differ between adolescent boys and girls. Relationships matter more, and earlier, in girls’ exploration than the occupation-first sequence implies.
This is not a peripheral complaint. It questions how far the theory generalises from its foundations, not just how it was later applied.
Hard to Disprove
Popper (1959) argued that a scientific theory must be falsifiable, meaning it must say in advance what evidence would count against it. Erikson’s account struggles with that test.
Erikson was a neo-Freudian ego psychologist, one of the thinkers who built on Freud’s psychoanalytic ideas. He worked from clinical case material and after-the-fact interpretation, not controlled studies (Erikson, 1963, 1968). See Erikson vs. Freud for the full comparison.
He treated serious disturbance as an aggravation, prolongation or regression of the normal crisis. Because all three fold back into the same framework, smooth resolution, delayed resolution and outright breakdown can each be redescribed as a variant of the predicted process.
Marcia’s measurable statuses were a direct response. That is why six decades of research have tested the statuses, not the original clinical theory (Maehler & Hernández-Torrano, 2025).
Inconsistent Measurement
Côté and Levine (1988) examined the research programme built on Marcia’s statuses. Different assessment techniques, such as a structured interview and a self-report questionnaire, do not always give the same classification for the same person.
Key terms were never fully standardised either. What counts as genuine exploration, rather than superficial questioning, is one of them.
Maehler and Hernández-Torrano (2025) found the same inconsistency decades later.
The two main tools also measure different things. Diffusion is a label for having neither explored nor committed. Role confusion is a broader, more distressing state. Some carefree diffuse young people report little anxiety at all, which is one reason confusion-specific questionnaires such as the EPSI were built.
A construct that shifts with the instrument is harder to treat as a single, settled thing than Erikson’s tidy description suggests.
Real Life Applications
Counselling and Mental Health
Counsellors use the EPSI and identity-status interviews to locate a young person’s difficulty. The framework helps them tell an engaged but unsettled client in moratorium from one in true diffusion.
The first may need support to keep exploring safely. The second may need help simply engaging with the question of who they are.
Diffusion also splits in two. A carefree drifter may need no identity-focused help, while a distressed one may need it most.
The links with low mood and self-injury matter too. They give practitioners grounds to take reported role confusion seriously, not dismiss it as ordinary teenage moodiness (Bogaerts et al., 2021; Gandhi et al., 2016).
School, College and Careers
A student who seems indecisive may be doing healthy identity work. Moratorium and achievement both involve active exploration. Foreclosure and diffusion involve passive acceptance or avoidance.
A student who cannot concentrate, or drifts between half-finished projects, may be showing role confusion’s effect on purposeful effort. It need not be a simple motivation problem. Such a student needs help finding a direction that feels like their own, not only a stricter response.
Advice can match the status. A foreclosed student may need permission and safe opportunities to question a path. An anxious moratorium student may need structured decision support.
Youth Work and Social Work
Erikson linked negative identity to delinquency, and that link guides work with at-risk young people. Reading some rule-breaking or self-destructive behaviour as a bid for identity, rather than simple defiance, changes the response.
On this reading, the behaviour does real psychological work. It gives the young person a recognisable role. The aim shifts from punishment to helping them find an alternative, non-stigmatised route to a distinct, self-defining role.
How Does Identity vs. Role Confusion Compare with Other Accounts of Adolescence?
Hall’s Storm-and-Stress Hypothesis
Hall (1904), the earliest formal theorist of adolescence, argued that development replays human evolutionary history and that adolescence is an inherently turbulent phase of it.
Erikson located the difficulty in one specific task, forging an identity. Hall located it in diffuse, near-universal emotional turbulence.
The evidence favours Erikson’s narrower claim. In the ten-country survey described above, most adolescents reported a broadly positive self-image, not constant turmoil (Offer et al., 1988).
Coleman’s Focal Theory
Coleman (1980) proposed that most adolescents cope without crisis by dealing with one relationship issue at a time.
Concerns about self-image, peer rejection and parental relationships each peak at different ages, so they rarely collide.
Focal theory complements Erikson rather than rivalling him. It explains why the crisis is manageable, not acute, for most people. It also describes the pacing of adjustment that Erikson’s theory leaves unspecified.
McAdams’s Narrative Identity
McAdams (2001) sees identity as a narrative identity, an internalised, evolving life story. It links a reconstructed past with an imagined future to give a life unity and purpose.
Erikson and Marcia ask whether someone has explored and committed. McAdams asks what story they tell about who they are and how they became that way.
The approaches are complementary. Narrative coherence can be read as one marker of a settled identity. Narrative theory also sidesteps some culture-bound assumptions built into exploration and commitment as universal yardsticks.
Key Takeaways
- The Task: Building a stable ego identity out of the many roles of adolescence. A good result brings the virtue of fidelity; failure leaves role confusion, a fragmented sense of self.
- How It Develops: Adolescents explore roles and beliefs, then commit to choices that feel their own. Family, peers, school and society give or withhold the room to do so.
- Role Confusion: It shows up in intimacy, time perspective, industry and, at the extreme, a negative identity. It is not a diagnosis.
- Marcia’s Statuses: Exploration and commitment give four statuses: diffusion, foreclosure, moratorium and achievement. People can move between them in either direction.
- Best Evidence: The statuses differ in how people cope under stress (Marcia, 1966), and confusion tracks depressive symptoms throughout adolescence (Bogaerts et al., 2021).
- Contested Ground: Only about a third are identity-achieved by young adulthood, so “crisis” may overstate it. Cultural and gender bias and weak testability are also criticised.
- Never Finished: Identity work often continues into adulthood and can move backwards.
References
Archer, S. L. (1989). Gender differences in identity development: Issues of process, domain and timing. Journal of Adolescence, 12(2), 117–138. https://doi.org/10.1016/0140-1971(89)90003-1
Baumeister, R. F., & Muraven, M. (1996). Identity as adaptation to social, cultural, and historical context. Journal of Adolescence, 19(5), 405–416. https://doi.org/10.1006/jado.1996.0039
Bogaerts, A., Claes, L., Buelens, T., Verschueren, M., Palmeroni, N., Bastiaens, T., & Luyckx, K. (2021). Identity synthesis and confusion in early to late adolescents: Age trends, gender differences, and associations with depressive symptoms. Journal of Adolescence, 87(1), 106–116. https://doi.org/10.1016/j.adolescence.2021.01.006
Bogaerts, A., Claes, L., Schwartz, S. J., Becht, A. I., Verschueren, M., Gandhi, A., & Luyckx, K. (2019). Identity structure and processes in adolescence: Examining the directionality of between- and within-person associations. Journal of Youth and Adolescence, 48(5), 891–907. https://doi.org/10.1007/s10964-018-0931-5
Branje, S. (2022). Adolescent identity development in context. Current Opinion in Psychology, 45, Article 101286. https://doi.org/10.1016/j.copsyc.2021.11.006
Coleman, J. C. (1980). The nature of adolescence. Methuen.
Côté, J. E., & Levine, C. G. (1988). A critical examination of the ego identity status paradigm. Developmental Review, 8(2), 147–184. https://doi.org/10.1016/0273-2297(88)90002-0
Curry, C. (1998). Adolescence. In K. Trew & J. Kremer (Eds.), Gender and psychology. Arnold.
Erikson, E. H. (1963). Childhood and society (2nd ed.). Norton.
Erikson, E. H. (1968). Identity: Youth and crisis. Norton.
Gandhi, A., Claes, L., Bosmans, G., Baetens, I., Wilderjans, T. F., Maitra, S., Kiekens, G., & Luyckx, K. (2016). Non-suicidal self-injury and adolescents’ attachment with peers and mother: The mediating role of identity synthesis and confusion. Journal of Child and Family Studies, 25(6), 1735–1745. https://doi.org/10.1007/s10826-015-0350-0
Giedd, J. N., Blumenthal, J., Jeffries, N. O., Castellanos, F. X., Liu, H., Zijdenbos, A., Paus, T., Evans, A. C., & Rapoport, J. L. (1999). Brain development during childhood and adolescence: A longitudinal MRI study. Nature Neuroscience, 2(10), 861–863. https://doi.org/10.1038/13158
Gilligan, C. (1982). In a different voice: Psychological theory and women’s development. Harvard University Press.
Hall, G. S. (1904). Adolescence: Its psychology and its relations to physiology, anthropology, sociology, sex, crime, religion and education. Appleton.
Kroger, J., Martinussen, M., & Marcia, J. E. (2010). Identity status change during adolescence and young adulthood: A meta-analysis. Journal of Adolescence, 33(5), 683–698. https://doi.org/10.1016/j.adolescence.2009.11.002
Maehler, D. B., & Hernández-Torrano, D. (2025). Identity development research: A systematic review of reviews. Self and Identity, 24(8), 907–942. https://doi.org/10.1080/15298868.2025.2549770
Marcia, J. E. (1966). Development and validation of ego-identity status. Journal of Personality and Social Psychology, 3(5), 551–558. https://doi.org/10.1037/h0023281
McAdams, D. P. (2001). The psychology of life stories. Review of General Psychology, 5(2), 100–122. https://doi.org/10.1037/1089-2680.5.2.100
Offer, D., Ostrov, E., Howard, K. I., & Atkinson, R. (1988). The teenage world: Adolescents’ self-image in ten countries. Plenum.
Popper, K. (1959). The logic of scientific discovery. Hutchinson.
Potterton, R., Austin, A., Robinson, L., Webb, H., Allen, K. L., & Schmidt, U. (2022). Identity development and social-emotional disorders during adolescence and emerging adulthood: A systematic review and meta-analysis. Journal of Youth and Adolescence, 51(1), 16–29. https://doi.org/10.1007/s10964-021-01536-7
Rosenthal, D. A., Gurney, R. M., & Moore, S. M. (1981). From trust to intimacy: A new inventory for examining Erikson’s stages of psychosocial development. Journal of Youth and Adolescence, 10(6), 525–537. https://doi.org/10.1007/bf02087944