The development of the subconcepts of death in young children: a short-term longitudinal study.

A short-term longitudinal design and the probabilistic latent class method of analysis were used to study the development of young children's understanding of death. 99 first and second graders were interviewed individually in the fall and spring. The results support the notion that the subconcepts of death--irreversibility, cessation, causality, and inevitability--need to be studied separately and in relation to one another. Children first understand the subconcepts of irreversibility and inevitability. Development of these subconcepts does not seem to be conditional on each other. However, at least one of these subconcepts must be understood before the child understands the subconcepts of cessation or causality. The pattern of development of these subconcepts is different when the referent object is human versus animal. The overall methodology offers promise in understanding the development of these concepts in young children.