Research and Design Methodology

In a Word doc, compose a 500 word essay describing the longitudinal, cross sectional and sequential designs used in lifespan development research, citing the strengths and limitations of each. Then explain the similarities and differences of systematic observation, self reports, the clinical method, and ethnography as described in the text.

DO NOT USE WIKIPEDIA, ONLINE DICTIONARIES, INTRODUCTORY PSYCHOLOGY TEXTBOOKS, OR OTHER ENCYCLOPEDIAS OR ELEMENTARY SOURCES!!!! Do NOTUse non-professional web sites at all! It is best to use only highly credible web sites (e.g., apa.org) as sources–and to do so sparingly.