Environmental (Mechanistic) development describes:

• A. Organismic
• B. Asynchronous
• C. Growth
• D. Environmental (Mechanistic)

Answer: (D)

Environmental (Mechanistic) development describes a view where growth and change are driven by the surrounding environment and unfold in a steady, continuous fashion. The organism is seen as largely passive, with development accumulating through ongoing exposure to stimuli, experiences, nutrition, and social context rather than through abrupt, stage-like leaps. This contrasts with an organismic perspective, which emphasizes internal maturation, qualitative shifts, and discrete stages. Because mechanistic development centers on gradual, quantitative growth shaped by experience, it best fits descriptions of a smooth developmental trajectory influenced by the environment. This helps clinicians focus on enriching the surrounding environment to support progress and explains why changes tend to be gradual rather than dramatic at specific ages.