They found no evidence that hydroxycitric acid, the active ingredient in weight loss products made from garcinia cambogia, produced significant weight loss. The American Journal of Clinical Nutrition in 2004 published a systematic review of meta-analyses and clinical trials on dietary supplements for weight loss by complementary medicine researchers at the Universities of Exeter and Plymouth.
None of the over-the-counter weight loss aids worked, including garcinia cambogia.
Observation, as the name implies, is a way of collecting data through observing. Observation data collection method is classified as a participatory study, because the researcher has to immerse herself in the setting where her respondents are, while taking notes and/or recording.
Observational Research. What is Observational Research? Observational research (or field research) is a type of correlational (i.e., non-experimental) research in which a researcher observes ongoing behavior. There are a variety of types of observational research, each of which has both strengths and weaknesses.
Controlled observations are usually overt as the researcher explains the research aim to the group, so the participants know they are being observed. Controlled observations are also usually non-participant as the researcher avoids any direct contact with the group, keeping a distance (e.g. observing behind a two-way mirror).Author: Saul Mcleod. For a more developed discussion of the distinction between observation and participant observation see Savage () and for a discussion of participant observation as a methodology see Jorgensen ().
Observation is a complex research method because it often requires the researcher to play a number of roles and to use a number of techniques, including her/his ﬁ ve senses, to . Descriptive research methods are pretty much as they sound -- they describe situations. They do not make accurate predictions, and they do not determine cause and effect. There are three main types of descriptive methods: observational methods, case-study methods and survey methods.