The development of the prefrontal cortex in childhood is one of the fundamental processes of neurocognitive development that plays a decisive role in the formation of self-regulation, behavior control, emotion management, impulse inhibition, and purposeful behavior direction. The prefrontal cortex is a part of the frontal lobe of the brain that participates in the regulation of complex cognitive activities, decision-making, planning, evaluation of behavioral consequences, and coordination between cognitive and emotional processes. The development of this area begins in the prenatal period, but its structural and functional organization continues throughout childhood and adolescence and is influenced by the interaction of genetic, environmental, experiential, and social factors. The importance of the development of the prefrontal cortex lies in the fact that the child gradually moves from immediate, dependent reactions to environmental stimuli and immediate needs to behaviors that are targeted, planned, and appropriate to social rules. This change is not merely a result of aging, but is the result of the gradual maturation of neural networks, improved communication between different brain regions, and the acquisition of learning experiences in the family, school, and peer relationships. Self-regulation refers to a person's ability to manage attention, emotion, thoughts, and behavior in order to achieve goals and adapt to environmental requirements. In childhood, this ability is still being formed, and its extent changes in different situations, depending on the complexity of the task, the intensity of the excitement, the level of fatigue, and the level of support of adults. The prefrontal cortex plays an important role in this process by receiving and processing situation-related information, maintaining purpose in the mind, and regulating behavioral responses. One of the basic functions of this area is inhibitory control, which helps the child to inhibit immediate and disproportionate responses and consider the possible consequences before performing the behavior. For example, a child who is learning to take turns should be able to manage his immediate urge to respond or pick up the object in question and coordinate his behavior with the rules of the situation. This ability gradually improves as the prefrontal networks grow and their relationship with motor, sensory, and emotional areas. However, impulse control in childhood cannot be attributed solely to the activity of a brain region, as its effective functioning is the result of the cooperation of several neural networks and their interaction with environmental experiences. Working memory is another important component of executive functions that plays a role in the development of self-regulation. This ability allows the child to retain information in mind for a short period of time, manipulate it, and use it when performing the activity. Memorizing multi-step instructions, following the rules of the game, and remembering the goal of a task are some of the situations that depend on working memory. The prefrontal cortex is involved in the coordination of processes related to working memory, and as the experience and evolution of neural networks increases, the child gradually becomes more capable of retaining relevant information and ignoring irrelevant stimuli. Weakness in this process may cause the child to forget instructions, take action before the explanation is finished, or have difficulty in activities that require following several steps. Cognitive flexibility is another important component of self-regulation, which refers to the ability to change strategy, accept new rules, and adapt to changing circumstances. The evolution of prefrontal networks helps a child move away from repetitive responses, consider new information, and choose another approach if one method is ineffective. This ability is important in problem-solving, school learning, interacting with peers, and adapting to everyday changes. A child with greater cognitive flexibility is usually more likely to change the rules of a game or modify his or her strategy after encountering a mistake, depending on language level, experience, motivation, and emotional condition. Self-regulation development is also linked to the evolution of communication between the prefrontal cortex and the brain systems associated with emotion processing, reward, and threat. In intense emotional situations, the child may not be able to fully utilize his or her cognitive capacities as his attention and processing resources are focused on the emotional stimuli. In such situations, it becomes more difficult to stop the immediate reaction, assess the situation, and choose an adaptive response. For this reason, impulsive behavior or intense emotional reaction in childhood does not necessarily indicate a lack of learning or a deliberate disregard for rules, but can rather reflect developmental limitations in emotion regulation and coordination of cognitive processes. In the early years of life, behavior regulation is largely dependent on the support of caregivers, and the child gradually incorporates the strategies he or she experiences in interacting with adults into his independent behavior. This process, sometimes referred to as co-regulation, provides the basis for the gradual development of self-regulation. When parents react calmly, predictably, and appropriately to a child's emotional turmoil, there is more opportunity to learn to name emotions, tolerate failure, and choose alternative behaviors. In contrast, unpredictable environments, severe punishment, or disproportionate emotional reactions may make it more difficult to regulate emotion and lead the child to use immediate, defensive responses. This association does not mean that the parenting style definitively determines brain development, but rather indicates a two-way interaction between the child's characteristics, the quality of relationships, and learning opportunities. From a theoretical perspective, the neurodevelopmental approach emphasizes the principle that self-regulatory abilities are expanded by the gradual evolution of neural structures and networks and the increase in the efficiency of brain communication. In this framework, the prefrontal cortex is one of the main components of cognitive control networks, whose activity is coordinated with parietal areas, attention systems, and circuits related to the evaluation of outcomes. The executive functions approach also considers self-regulation as the result of the interaction of response inhibition, working memory, and cognitive flexibility. According to this viewpoint, children's differences in behavior control should be studied according to a set of related but distinct abilities, because a child may be capable of retaining information, but may have difficulty in controlling emotional responses. The social learning approach emphasizes the role of observation, modeling, feedback, and behavioral consequences in the development of behavioral control, and shows that the child learns the rules of behavior regulation through observing adult behavior and experiencing the consequences of his choices. The ecological approach to development also notes that self-regulation does not form in a vacuum, and that family circumstances, school relationships, economic and social status, sleep quality, nutrition, and play opportunities can affect cognitive and emotional functioning. In the meantime, targeted games, group activities, interactive storytelling, and practice that require taking turns can provide natural opportunities for practicing behavior control. For example, games that require the child not to respond to a familiar stimulus or act only after hearing a specific signal can involve response inhibition and selective attention. Activities that require remembering rules and changing them during play can also help practice working memory and cognitive flexibility. However, the transfer of practiced skills to everyday behavior is not automatic, and the effectiveness of these activities depends on the quality of the performance, the appropriateness of the child's developmental level, and the opportunity to use the skills in real-world situations. In the educational setting, teachers can reduce unnecessary cognitive burden by providing clear instructions, breaking down complex tasks into smaller steps, providing opportunities for breaks, and using specific feedback. Such actions are especially important for children who have difficulty maintaining attention, controlling impulses, or organizing behavior. Creating a predictable structure in the classroom, setting narrow and clear rules, and reinforcing targeted behaviors can help the child gradually take more responsibility for managing his or her behavior. In the family, everyday opportunities such as preparing for school, sorting things out, doing homework, and resolving conflicts with siblings can be used to teach planning and emotion control. Involving the child in choosing solutions, explaining the consequences of the behavior, and encouraging him to think before taking action provides the basis for the development of behavioral independence. However, the same expectation of self-control as adults from young children is not compatible with the reality of neurological and cognitive development and may lead to frequent conflicts and incorrect evaluation of the child's behavior. One of the major challenges in research on the evolution of the prefrontal cortex is the complexity of directly measuring growth and linking it to everyday behavior. Brain imaging can provide information about brain structure or activity, but imaging findings alone are not enough to draw conclusions about a child's ability to self-regulate. In addition, a child's performance on lab tests may differ from his or her behavior at home or school, as motivation, type of assignment, presence of others, and intensity of excitement affect the outcome. Individual differences in developmental rate, mood, language, and learning experiences also complicate the interpretation of the results. Other limitations in this area include the difficulty of separating the effect of biological maturity from the effect of environment and experience, as these factors affect each other at the same time. Cross-sectional studies are usually not sufficient to prove the evolutionary trajectory or causal relationship, and longitudinal studies can provide a more accurate picture of individual changes over time. However, longitudinal studies may also face sample drops, changes in participants' living conditions, and difficulty controlling for all intervening variables. Another limitation is to generalize the results of research conducted in a cultural or social group to all children, as expectations of independence, obedience, expression of emotion, and behavior control are not the same in different cultural settings. Therefore, self-regulation assessment should be done with regard to age, cultural background, family circumstances, and developmental expectations. From a clinical point of view, recognizing the role of the prefrontal cortex in self-regulation can help to better understand problems such as impulsivity, attention difficulties, poor planning, and emotion regulation problems. However, the presence of a specific behavior, such as restlessness or the inability to wait alone, does not indicate a neurological disorder or damage to the prefrontal cortex. Specialized evaluation should examine information from observation, interviews with parents and teachers, developmental history, and valid measurement tools together. Also, factors such as sleep disturbance, anxiety, environmental pressures, learning problems, and medical conditions may affect the child's executive functioning and need to be considered in differential assessment. In psychological interventions, training in problem-solving skills, identifying emotions, pausing before reacting, using relaxation strategies, and practicing planning can help improve behavior management. The effectiveness of these interventions increases when their goals are clear, appropriate to the child's developmental level, and can be practiced in different environments. Parental education can also provide more favorable conditions for the development of self-regulation by fostering positive interaction, reducing unnecessary conflicts, and creating regular opportunities for practicing independence. In future research, investigating the interaction between the evolution of prefrontal networks, sleep quality, physical activity, chronic stress, parent-child relationships, and educational experiences can lead to a more comprehensive understanding of the mechanismsLead to the development of behavior control. The simultaneous use of behavioral measurements, parent-teacher reports, and neurological indicators also allows for a more accurate analysis of the relationship between brain changes and daily functioning. Paying attention to individual differences and avoiding simplistic interpretations about the role of a brain region is essential for the development of educational programs and clinical interventions. The development of the prefrontal cortex should be considered as a gradual process dependent on the interaction of biology and experience, which provides the ground for the development of impulse inhibition, planning, cognitive flexibility, and emotion regulation. Providing a safe, responsive and developmental environment, along with targeted opportunities for practicing decision-making and behavior control, can help to develop children's self-regulatory capacities and improve their academic, social, and emotional adjustment.