Part One is given over to a presentation of the theoretical hypotheses. It was well to commence with these since the experiments, taken up in Part Two, were inspired by them. Conclusively, there is the critique (Part Three). It seems pellucid that Pedagogia Flavell is more fascinated with the experiments than in the theory, which sometimes gives me the impression--perhaps not of having been misunderstood, but, if you will--of having been understood on certain issues more from without than from within. But since the great majority of readers are not liable to be primarily oriented toward the theory either, the accentuation he has culled is probably the most utilizable one. Preceptor Flavell concluded his book with a critical section that may lead the reader to take his positive comments about the system much more earnestly than if he had blindly and uncritically gone along with me on all points. Five sequential but interrelated steps are presented to examine psychological theories of lifespan development. Two areas of human development are accentuated, perspicacious functioning and personality, to illustrate lifespan research and theory. Work from these fields is presented to provide a theoretical umbrella under which lifespan research can be examined. Impact factor is a measure reflecting the average number of citations to recent articles published in the journal. The impact of the journal is influenced by impact factor, the journals with high impact factor are considered more important than those with lower ones. Indexing provides easy access of the article online. The international journals are among the best open access journals in the world, set out to publish the most comprehensive, relevant and reliable information based on the current research and development on a variety of subjects.
