1) Infantile amnesia refers to the inability of adults to recall episodic memories from ages 2 to 4 years old due to the brain still developing, especially areas involved in memory storage like the hippocampus.
2) Memories from these young ages can sometimes be remembered through triggers like hearing stories, seeing photos, or watching home videos, which help individuals form memories of those times.
3) The examples provided show how memories from ages 2 to 4 tend to be pieced together from other sources rather than accurately recalled, while the memory from age 5 contained more accurate details, suggesting memory storage is more developed by that age.