How LSD affects a person's mind can vary widely. Many people who have taken LSD claim it is a mind-expanding drug that produces feelings of euphoria or intense happiness while increasing awareness and understanding of life. Others feel quite the contrary and have reported experiencing extremely negative emotions such as fear and anxiety and overall unpleasant experiences.

Clearly, the LSD user's experience is characterized by heightened feelings and emotions. In an article in Process Studies , Dr. Leonard Gibson noted that, whether the experience is good or bad, "everything seems to take on deeper significance, a myriad of meaning unlock in each individual thing. Events brim over with significance."Since the 1960s, the broad experiences produced by LSD have been called a "trip," like "drunk" is used to describe the overall effects of alcohol. The term comes from LSD's long duration...