Final answer:
Dan P. McAdams indeed posited that life stories can be decomposed into multiple parts, such as themes, settings, and characters. His work criticizes models like the family life cycle for being too narrowly focused on specific stages.
Step-by-step explanation:
The statement that McAdams argued life stories could be decomposed into at least five different parts or features is TRUE. Dan P. McAdams, a prominent figure in psychology, has conducted extensive research on narrative identity and postulates that individuals construct life stories that integrate their reconstructed past, perceived present, and anticipated future. These life stories are said to consist of multiple aspects, including themes, settings, characters, plotlines, and moral messages, which collectively provide a sense of coherence and meaning to one's life. A criticism of models like the family life cycle model is that they may be too narrowly focused on a sequence of stages, failing to accommodate the diversity and complexity found within family narratives and individual life stories. McAdams' work suggests that, by decomposing life stories into nuanced components, a more comprehensive understanding of personal and familial identity can be achieved.