Evidence gathered from scientific research studies of reports from individuals.
As for your other questions. These are addressed in the paper.
This paper is from 2007, which means its 20 years old and means a lot of additional research has since been done. Some times terminology changes in science and I should add that a lot of researchers coin their own terms for things. so that can make it tricky when reviewing literature. but in studies, the terms are always defined. so those definitions will be in this paper.
So I also would suggest looking at this link which shows papers that have cited this 2007 paper to see what other researchers have said about the topic and what bailey or his grad students have added to it.
There are 55 of these. some more relevant than others to the topic than others.
Evidence gathered from scientific research studies of reports from individuals.
As for your other questions. These are addressed in the paper.
This paper is from 2007, which means its 20 years old and means a lot of additional research has since been done. Some times terminology changes in science and I should add that a lot of researchers coin their own terms for things. so that can make it tricky when reviewing literature. but in studies, the terms are always defined. so those definitions will be in this paper.
https://share.google/G3ZWsS7Y3TPh9p9k9
So I also would suggest looking at this link which shows papers that have cited this 2007 paper to see what other researchers have said about the topic and what bailey or his grad students have added to it.
There are 55 of these. some more relevant than others to the topic than others.
https://scholar.google.com/scholar?cites=15898950914960057097&as_sdt=400005&sciodt=0%2C14&hl=en