By studying children, you can learn why they act the way they do, discover why caregivers are an important influence, and enjoy children more. As more has been learned about children through research, attitudes and practices have changed. Experiences in the first years of life promote rapid brain development. Heredity and environment both impact development. Self-esteem influences a person's ability to face life's challenges. By observing children, you can learn things you cannot learn from a book. There are several types of observation methods. All observations should be conducted carefully and kept confidential.