The belief you mentioned is related to the concept of childhood amnesia and how age influences memory of traumatic incidents. Childhood amnesia refers to the phenomenon where most people have limited memories of events that occurred before the age of 3-4 years.
Regarding traumatic incidents, the impact of trauma on memory and psychological development can vary depending on the age of the individual when the traumatic event occurs. Here's a general overview of what might happen at different ages:
Age 6: While a 6-year-old may not forget the traumatic incident immediately, their memory of it could be less detailed and vivid compared to older children or adolescents. Younger children may also have more difficulty processing and understanding the full implications of the trauma. However, this doesn't mean they won't be affected by it; they may still experience emotional and behavioral reactions.
Age 15: A 15-year-old is more likely to have a clearer and more lasting memory of the traumatic incident. At this age, memory retention and cognitive abilities are more developed, enabling them to understand the event in a more complex manner. The impact of the trauma may be more evident, potentially leading to more pronounced and longer-lasting emotional and psychological effects.
It's important to note that individuals' responses to trauma can vary widely based on personality, coping mechanisms, support systems, and the nature of the traumatic event itself. While some people may "get over" a traumatic experience with time and support, others may struggle with its effects throughout their lives.
In any case, trauma, regardless of age, should be taken seriously and addressed with care and appropriate professional support. If you or someone you know has experienced a traumatic incident, seeking assistance from mental health professionals can be beneficial in processing the event and promoting healing.