Executive Function and the Stories We Tell: A Cognitive Control Perspective on Identity Formation

Ask any production engineer what keeps them up at night, and they will likely mention something about process stability—the maddening way a perfectly calibrated injection molding machine suddenly starts spitting out short shots or flash defects for no apparent reason. You check the melt temperature, the injection pressure, the cooling time. Everything looks right on the dashboard. Yet the parts keep failing.
 

I spend my days studying a different kind of production line: the adolescent prefrontal cortex. And I have come to believe that the same principle applies. When we talk about identity formation—the process by which a teenager weaves personal memories, cultural narratives, and social feedback into a coherent sense of self—we are really talking about executive function under pressure. The cognitive machinery that suppresses a prepotent response, holds multiple task-relevant pieces of information online, and flexibly shifts between competing perspectives is the same machinery that allows a young person to say, “This is who I am.”
 

Cognitive psychologist Patricia Bauer has spent her career mapping how autobiographical memory develops and how the stories we internalize shape identity. Her work demonstrates that identity is not a static trait but a narrative construction—initially scaffolded by parents and caregivers, then gradually taken over by the individual as they gain control over their own memory and self-representation. In a recent talk, artist Matricia Bauer offered a powerful testament to this process, describing her journey to reclaim Indigenous identity after her community suffered the intergenerational trauma of Canada’s residential schools. “Really, my TED Talk isn’t meant for the masses,” she said. “It’s really meant for those other Indigenous women that are coming of age”.
 

That is a statement about executive function. Claiming an identity that has been suppressed, erased, or denied requires response inhibition—the ability to override internalized shame and external stereotypes. It requires working memory—holding multiple, sometimes conflicting, cultural narratives in mind while constructing a coherent personal story. And it requires cognitive shifting—moving between the perspective of the oppressor and the perspective of the community, between the past and the present, between what was taken and what can be reclaimed.
 

This is not poetic license. This is prefrontal cortex doing its job.
 

Decomposing Executive Function: What the Tasks Actually Measure
 

The executive function construct has suffered from what I call “vague ability classification”—the tendency to treat it as a single, monolithic mental muscle. My colleagues and I have spent the better part of a decade pushing back against this generalization. The data are unambiguous: executive function is not one thing.
 

A landmark study of 2,166 children and adolescents, aged seven to nineteen, administered seven executive function tasks from the Cambridge Brain Sciences test battery. The findings revealed a developmental shift that should change how we think about adolescent cognition. For children up to age twelve, a unitary factor model provided the best fit—meaning that working memory, inhibition, and shifting loaded onto a single underlying ability. But for adolescents aged twelve to eighteen, the structure differentiated into four distinct components: working memory, inhibition, shifting, and planning.
 

Let me translate that into plain language. A ten-year-old who is good at holding information in mind also tends to be good at suppressing impulses and good at switching between tasks. They are all the same skill, for practical purposes. But by age fourteen, these abilities have begun to specialize. Working memory no longer predicts inhibition the way it used to. The cognitive system is partitioning itself into functionally independent modules.
 

This has direct implications for identity formation. The adolescent who struggles with working memory—who cannot keep multiple self-representations active simultaneously—will have difficulty constructing a nuanced identity. The adolescent who struggles with inhibition—who cannot suppress automatic negative self-appraisals—will have difficulty maintaining a stable sense of self-worth. And the adolescent who struggles with shifting—who gets stuck in a single perspective—will have difficulty integrating feedback from peers, family, and culture into a flexible self-concept.
 

The developmental trajectory matters too. Working memory, inhibition, and planning all show higher scores in late adolescents (fifteen to eighteen) compared to early adolescents (twelve to fifteen). But shifting shows no difference across these age bands. The ability to flexibly switch between cognitive sets appears to mature earlier and plateau sooner. This suggests that the scaffolding for identity flexibility is laid down relatively early in adolescence, while the working memory capacity to hold complex narratives and the inhibitory control to suppress unwanted self-concepts continue developing into young adulthood.
 

Case Study One: The Short Shot and the Unfinished Narrative
 

Consider a production line manufacturing polypropylene gallon caps. The ideal parameters are well-established: holding pressure of 265 bar, holding time of 0.6 seconds. Yet operators keep encountering short-shot defects—incomplete filling of the mold cavity caused by insufficient molten plastic flow. The dashboard shows all parameters within spec. The machine is running the same program that produced perfect parts yesterday. But today, the parts are coming out with missing sections.
 

The troubleshooting protocol is methodical. Check the nozzle temperature—was it stable at 285 °C? Verify the holding pressure—did it drop below 70 bar? Confirm the cooling time—was it maintained at 1.8 seconds? More often than not, the root cause is not a single out-of-spec parameter but an interaction effect: the melt temperature drifted slightly, which increased viscosity, which required higher injection pressure to fill the cavity, but the holding pressure was not adjusted to compensate.
 

This is what executive dysfunction looks like in adolescence. The surface-level behavior—poor academic performance, emotional dysregulation, social withdrawal—is the short shot. The underlying cause is almost always an interaction between multiple cognitive components. Working memory deficits reduce the capacity to hold task instructions online. Inhibition deficits allow irrelevant distractions to intrude. Shifting deficits prevent flexible adaptation to changing task demands. And planning deficits undermine the ability to organize behavior toward a goal.
 

The adolescent who cannot complete a homework assignment may look like they are being lazy or oppositional. But the real story is often a failure of cognitive control architecture—a system that has not yet differentiated into its mature component structure, or a system that has differentiated but is temporarily overloaded.
 

Prefrontal Cortex: The Control Room
 

The neural substrate for all of this is the prefrontal cortex, particularly the dorsolateral and inferior frontal regions. During adolescence, the prefrontal cortex undergoes a critical period of maturation, driven by shifts in the balance between excitatory and inhibitory neurotransmission. This is not just incremental development; it is a qualitative reorganization of the circuitry that supports executive function.
 

Longitudinal studies tracking prefrontal neural activity through adolescence have shown that the trajectory of prefrontal activity accounts for improvements in working memory. More complex aspects of neural activity change progressively, but even simpler attributes—such as baseline firing rate and variability—have predictive power over behavioral outcomes. The adolescent brain is not simply getting bigger or faster; it is getting more efficient at recruiting the right neural populations for the right tasks at the right time.
 

But here is the catch. The same prefrontal circuitry that supports executive function also supports autobiographical memory retrieval and self-referential processing. When an adolescent constructs a personal narrative, they are activating the same neural systems that allow them to suppress a prepotent response on a Go/No-Go task. The cognitive control required to say “no” to a peer-pressure situation is the same cognitive control required to say “yes” to a coherent self-definition.
 

Case Study Two: The Flash Defect and the Leaky Boundary
 

Now consider a different production defect: flash. This occurs when molten plastic escapes the mold cavity through the parting line, creating a thin, unwanted protrusion on the finished part. The root cause is almost always excessive injection pressure or insufficient clamping force—the material is being pushed beyond the boundaries designed to contain it.
 

A case study from an injection molding facility producing medical consumables found that flash defects were costing the company approximately seventeen percent of daily production. The investigation identified four significant factors: pack pressure, pack time, injection speed, and screw RPM. By systematically adjusting these parameters—reducing pack pressure from 60 to 40 kg/cm², shortening pack time from five to four seconds, and lowering melt temperature from 200 to 195 °C—the team virtually eliminated the defect.
 

The parallel to executive function is striking. Inhibition is precisely the cognitive process that maintains boundaries—that keeps irrelevant information from flooding working memory, that stops automatic responses from overriding deliberate action. When inhibition fails, we get cognitive flash: intrusive thoughts, impulsive behaviors, and emotional overflows that leak beyond their appropriate contexts.
 

In adolescents with attention-deficit/hyperactivity disorder, network analyses of executive function test performance have revealed that shifting is less central and has a weaker relationship with inhibition. The cognitive components are not just underdeveloped; they are misconnected. This is not a simple delay; it is a different functional architecture. And it has profound implications for identity formation. The adolescent who cannot inhibit automatic negative self-appraisals will have difficulty constructing a positive identity. The adolescent who cannot shift between perspectives will have difficulty integrating multiple sources of feedback. The adolescent whose cognitive network is miswired will struggle to tell a coherent life story.
 

Case Study Three: The Halo Defect and the Speed Trap
 

A third case illustrates the importance of dynamic parameters. Researchers investigating halo gloss transition defects on large-scale injection-molded parts found that the primary cause was a drastic increase in flow front speed. As the mold cavity filled, the flow front area decreased, which caused the melt velocity to spike—and that spike created visible surface defects. The solution was a multi-step injection speed approach that minimized the sudden acceleration.
 

This is precisely what happens during identity formation under stress. The adolescent who is asked “Who are you?” under normal conditions can produce a measured, coherent response. But when the question comes with social pressure—from peers, from family, from cultural expectations—the cognitive demands spike. Working memory becomes overloaded. Inhibition becomes fatigued. Shifting becomes rigid. And the resulting self-narrative shows defects: contradictions, omissions, defensive posturing.
 

The solution, in both cases, is not to eliminate the pressure but to manage the rate of change. Multi-step approaches—gradual exposure to identity challenges, scaffolded narrative construction, supportive feedback loops—allow the cognitive system to adapt without spiking into dysfunction.
 

Connecting Identity and Executive Control: The Empirical Bridge
 

The empirical literature on autobiographical memory has long recognized its self-defining, self-regulatory, and social functions. Autobiographical memories are not neutral records of past events; they are actively constructed narratives that serve to stabilize identity, guide goal-directed behavior, and promote psychological well-being. But the construction of these narratives depends on executive processes: the ability to select relevant details, inhibit irrelevant ones, hold multiple perspectives in mind, and shift between temporal frames.
 

This is where the connection to Bauer’s work becomes explicit. Her research on the development of autobiographical memory shows that young children initially rely on parents and caregivers to structure their personal narratives. As they mature, they gradually take control of this process, becoming the authors of their own life stories. This transition is not just a social or emotional development; it is a cognitive one. The child who cannot hold a multi-episode narrative in working memory cannot construct a coherent identity. The child who cannot inhibit irrelevant details cannot maintain a consistent self-representation. The child who cannot shift between perspectives cannot integrate feedback from multiple sources.
 

The data from the 2,166-participant study confirm that these abilities continue developing into late adolescence and young adulthood. Working memory, inhibition, and planning all improve significantly between early and late adolescence. Shifting, interestingly, does not—it matures earlier and then plateaus. This suggests that the flexibility to shift between cognitive sets—the ability to see oneself from multiple perspectives—is established relatively early, while the capacity to hold complex narratives and the control to suppress unwanted self-concepts continue to develop through the late teenage years.
 

The Practical Implications for Assessment and Intervention
 

If we accept that identity formation depends on executive function, then assessment and intervention strategies must be rethought. The standard approach to adolescent mental health—talk therapy focused on narrative reconstruction—may be insufficient for adolescents with significant executive function deficits. You cannot help a teenager construct a coherent identity if their working memory cannot hold the components of the narrative, or if their inhibition cannot suppress the intrusive negative self-appraisals that derail the process.
 

This is why I distrust vague executive ability classifications. Saying that an adolescent has “poor executive function” tells me nothing useful. I need to know which component is impaired: Is it working memory? Inhibition? Shifting? Planning? The intervention for a working memory deficit—external scaffolding, reduced cognitive load, repeated rehearsal—is completely different from the intervention for an inhibition deficit—cueing, environmental restructuring, impulse-control training. And both are different from the intervention for a shifting deficit—explicit strategy instruction, perspective-taking exercises, cognitive flexibility training.
 

The same principle applies to the injection molding production line. Saying that a part has a “surface defect” tells the engineer nothing. The engineer needs to know whether it is a short shot, a flash defect, or a halo defect—and then needs to know which parameter to adjust. Melt temperature, injection pressure, cooling time, and flow front speed all require different corrective actions. The generalist approach—turn all the dials and hope for the best—is inefficient at best and counterproductive at worst.
 

The Story We Tell Ourselves
 

Matricia Bauer closed her talk with a declaration: “I am Eagle”. That is not just a statement of identity; it is a performance of executive function. To make that declaration, she had to inhibit the internalized voices that told her she was less than, hold the cultural narrative of her community in working memory, shift between the perspective of the colonizer and the perspective of the colonized, and plan a life that embodied that reclaimed identity.
 

The power of connecting with your identity is, in a very real sense, the power of executive function. Not because identity is a cognitive trick, but because the construction of a coherent self requires the full suite of cognitive control processes that the prefrontal cortex supports. When those processes are underdeveloped, miswired, or overloaded, the identity that emerges is fragmented, defensive, or unstable. When those processes are well-calibrated, the identity that emerges is coherent, flexible, and resilient.
 

The adolescent brain is not a finished product. It is a production line that is still being calibrated. The defects that appear—the short shots of incomplete self-narratives, the flash of emotional overflow, the halo of defensive posturing—are not signs of permanent failure. They are signs of a system in development, a system that will continue to differentiate and specialize through the late teenage years and into young adulthood.
 

The task for parents, educators, and clinicians is not to eliminate all defects but to manage the rate of change. Multi-step approaches, gradual exposure, scaffolded support—these are the cognitive equivalents of the multi-step injection speed approach that eliminates halo defects. They allow the system to adapt without spiking into dysfunction.
 

And the task for the adolescent themselves is to recognize that the story they are telling is not fixed. It is being constructed, revised, and refined by the same cognitive processes that allow them to learn a new skill, solve a complex problem, or resist a tempting impulse. The power of connecting with your identity is not a one-time event; it is an ongoing process of cognitive control.

Source Reference Link: https://www.ted.com/talks/patricia_bauer_the_power_of_connecting_with_your_identity

Link Brief: Cognitive psychologist Patricia Bauer studies autobiographical memory and self-identity formation. She explains how personal memories, cultural experience and social interaction shape individual identity, and why acknowledging one’s own life story helps build stable self-worth and mental well-being.