Dr. Chandler is a personality psychologist who is interested in studying the characteristics of people who report being abducted
by UFOs. She finds several people in an online support group for UFO abductees to participate and asks them if they can provide the names and contact information of other people who have also been abducted. Upon contacting these new participants, she asks them to refer her to even more people they may know who have been abducted. This is an example of what kind of sampling?
Snowball sampling may be defined as a type of non probability sampling technique. In this sampling the existing study recruits the future study and sample grows like rolling.
Dr. Chandler has prepared the report of the people abducted by UFOs and asked to share the details of the other people as well. Here, the present study depends on the future study as she asks the existing people to refer the more people.
Xerophthalmia is a progressive eye disease caused by vitamin A deficiency. Lack of vitamin A can dry out your tear ducts and eyes. Xerophthalmia can develop into night blindness or more serious damage to your cornea, the outer layer of your eye.
