In this period of time a child's sensations are saturated by their living environment and they copy every word and movement made by adults. When a child does something that an adult approves of, receiving praise will reinforce it. A child will also identify with the people it likes, "says Yeh Kuang-hui, who holds a doctorate in psychology.
在這段時間，孩子在生活環境中耳濡目染，模仿大人的一言一行；當他做了一件大人覺得對的事，受到誇獎，會發生增強作用；孩子對他喜歡的人，還會產生認同」，擁有心理學博士學位的葉光輝分析指出，後天環境的影響不遜於先天遺傳。