One of the three major development issues that Stacey and Juan are debating is called “continuity and stages”. The study of <u>developmental psychology</u> includes a person's thoughts, feelings, and behaviour and the changes of each of them. In this case, the development issue that Stacey and Juan are debating makes reference to the one which analyzes the two different views of development. <u>On the one hand</u>, development is considered as a continuous process that is gradual and cumulative (CONTINUITY, what Stacey argues). <u>On the other hand</u>, development is viewed as consisting of different stages (STAGES, what Juan argues).