Participant-observer approach
 
Ghost hunters taking an EMF reading which proponents say may show evidence of ghosts.While parapsychologists look for quantitative evidence of the paranormal in laboratories, a great number of people immerse themselves in qualitative research through participant-observer approaches to the paranormal. Participant-observer methodologies have overlaps with other essentially qualitative approaches as well, including phenomenological research that seeks largely to describe subjects as they are experienced, rather than to explain them.[9]

Participant-observation suggests that by immersing oneself in the subject being studied, a researcher is presumed to gain understanding of the subject. In paranormal research, a participant-observer study might consist of a researcher visiting a place where alleged paranormal activity is said to occur and recording observations while there. Participation levels may vary. In studying a supposedly haunted location, for example, the researcher may conduct a séance or participate in other activities said to cause paranormal activity.

Criticisms of participant-observation as a data-gathering technique are similar to criticisms of other approaches to the paranormal, but also include an increased threat to the objectivity of the researcher, unsystematic gathering of data, reliance on subjective measurement, and possible observer effects (observation may distort the observed behavior).[10] Specific data gathering methods, such as recording EMF readings at haunted locations have their own criticisms beyond those attributed to the participant-observation approach itself.

The participant-observer approach to the paranormal has gained increased visibility and popularity through reality-based television shows like Ghost Hunters, and the formation of independent ghost hunting groups which advocate immersive research at alleged paranormal locations. One popular website for ghost hunting enthusiasts lists over 300 of these organizations throughout the United States and the United Kingdom.[11]