Recent parapsychological research suggests that psychical system (e.g. psychical processes) are both “need-based” and are the result of a normal subconscious engagement with Nature (including reality and all constituents of reality e.g. individuals) beyond our physical and sensorial boundaries. This engagement, termed “psi,” void of spatial proximity (distance), can be broken into two main categories (e.g. Extrasensory Perception and Psychokinesis).
Such received and assimilated information is assumed involved in the development of all experiences. Psi is assumed to operate continuously at the basic, beginning level of human functioning (i.e. a first sight rather than a second sight). Since it seems that perceptual experiences begin with the psi level of engagement and shares similar functioning patterns with other subconscious processes, psychical processes are assumed to be integrated with these other subconscious processes.
Research has also lead to the finding that psi processes work with the memory (specifically the long-term memory) which is stored in various regions throughout the brain. Because psi is a fundamental basis of human functioning (e.g. perceptual experience), and the information is received and stored throughout the mind, there may be no way to “shut off” a psychical ability.
However, the psychical system appears to be linked to the emotional system and personality. Typically, in an individual will low stress and well maintained mental and physical health, psychical processes present themselves in a non-intrusive and typically unnoticeable manner, whereby simply contributing to experience rather than be an experience in and of itself.
Acute and chronic periods of heightened stress, mental illness (anxiety, depression, etc) and or physical illness, can increase the noticeability of a particular form of psychical phenomena. The resolution here is to remedy the stress (stress management, meditation, behavioral therapy, other forms of medical or therapeutic treatment, etc.) to alleviate the noticeability of the phenomena.
In addition, I have found correlations between personality types and specific phenomena. I have also found that personality deviation (altering personality) can result in the “disappearance” of one form of phenomena, to be replaced by another (e.g. telepathy for clairvoyance). However, even if personality deviation leads the exchange of a psychical specialty, the stress related factors will still play a critical role in the operations of the “new” phenomena (i.e. personality deviation in conjunction with stressors will still present intrusive phenomena).
In other words, if the psychical phenomena experienced by an individual is intrusive, the individual should focus either on alleviating stressors from their life, or learning new methods of coping with stress, as stress puts the body in continual state of “need” (e.g. needing to reduce stress, therefore “searching “ for a means to do so, as a means to promote system wide health). Once such needs are addressed, the phenomena will no longer be intrusive (i.e. will appear “shut-off”).