You make valid points, and I agree that the influence of hormones on mood and behavior is not exclusive to the teenage brain. Hormones play a significant role in mood regulation and behavior throughout a person's life, from infancy to old age.
During puberty, there is a surge in hormones, particularly sex hormones like estrogen and testosterone, which can lead to more noticeable mood swings and behavioral changes in teenagers. This is why the link between hormones and adolescence is often emphasized. However, hormones influence brain function and behavior from the early stages of development, even during infancy.
In infants and young children, hormonal fluctuations still occur and can affect mood, albeit differently compared to teenagers. For example, cortisol, often referred to as the stress hormone, can be influenced by various factors during childhood and can impact mood and emotional responses.
As for rebellious and destructive behavior, it is not exclusive to teenagers either. Young children can also exhibit challenging behaviors as part of their normal development. It's important to recognize that behavior is multifactorial and influenced by a combination of biological, psychological, social, and environmental factors at any age.
Adolescents, however, are often perceived as more challenging due to the significant changes happening during this developmental stage. They are experiencing physical, emotional, and cognitive changes, seeking independence, and testing boundaries. All these factors can contribute to more noticeable rebellious and sometimes destructive behavior.
In summary, hormones do indeed influence mood and behavior from birth and continue to have an impact throughout life. While the emphasis on hormones and the teenage brain is valid, it's essential to acknowledge that hormonal influences are present across the lifespan. Understanding and supporting children and adolescents during their development requires recognizing the complexities of their growth and the many factors that shape their behavior. Providing a nurturing and supportive environment, along with appropriate guidance and communication, can help children and teens navigate these critical stages in their lives.