The article below is an abbreviated version of the full article by Po Bronson. If you find this abbreviated article interesting, I encourage you to read the full article on the wired.com web site. As you may infer from the title, the “twist” in this real-life story is that Elizabeth Targ, a famous researcher on the healing power of prayer, became ill during the course of one of her studies on prayer and, despite being prayed for by hundreds of people, died. The full article is available online at:
http://www.wired.com/wired/archive/10.12/prayer.html?pg=1&topic=&topic_set= .
Homework: Read the article and type a one page essay that discusses at least two ways in which Elizabeth Targ’s research on prayer was not scientific in the way we’ve discussed in class. After reading the article, why do you think Dr. Targ was such a strong believer in the healing power of prayer? In what ways did her expectations, beliefs, biases, etc. influence the way she interpreted her data? This essay is due in your Feb 3/5 discussion section meeting.
A Prayer Before Dying:THE ASTONISHING STORY OF A DOCTOR WHO SUBJECTED FAITH TO THE RIGORS OF SCIENCE - AND THEN BECAME A TEST SUBJECT HERSELF.
By Po Bronson
THE THIRD-MOST ODDS-DEFYING, EYE-POPPING DISCOVERY IN THE LIFE AND WORK OF ELISABETH TARG, MD
In July 1995, back when AIDS was still a death sentence, psychiatrist Elisabeth Targ and her co-researchers enrolled 20 patients with advanced AIDS in a randomized, double-blind pilot study at the UC San Francisco Medical Center. All patients received standard care, but psychic healers prayed for the 10 in the treatment group. The healers lived an average of 1,500 miles away from the patients. None of the patients knew which group they had been randomly assigned to, and thus whether they were being prayed for. During the six-month study, four of the patients died - a typical mortality rate. When the data was unblinded, the researchers learned that the four who had died were in the control group. All 10 who were prayed for were still alive.
THE FOLLOW-UP STUDY
A lot of studies had investigated the effect of prayer on healing, but they were methodologically sloppy and their findings couldn't be replicated. In July 1996, Targ began a confirmation study, one with a larger sample and a more exacting protocol. It is widely acknowledged as the most scientifically rigorous attempt ever to discover if prayer can heal. By this time, triple-drug therapy for those with AIDS had begun, and quite miraculously AIDS patients stopped dying. So rather than just measuring mortality, the replication trial also tallied the occurrence of 23 AIDS-related illnesses that appeared during the six months of the study, from ulcers to encephalitis. Forty patients were recruited. They filled out questionnaires, had photos taken, and signed consent forms that indicated they had a 50/50 chance of being prayed for by faraway psychic healers. They were free to pray for themselves and have family and friends pray for them as well - the trial design assumed everyone would get a "baseline" amount of prayer from loved ones. Their blood was drawn, and a computer matched them to a statistical twin - a counterpart with a similar CD4+ level, age, and number of previous AIDS-related complications. The computer randomly assigned one of each pair to a control group and the other to a treatment group. The photos of those in the treatment group were sent to 40 healing practitioners, ranging from rabbis to Native American medicine men to bioenergetic psychics. These healers performed their rituals one hour a day for six consecutive days. Each week for 10 weeks they rotated, so each test-group patient received distant healing from 10 practitioners. The healers kept logs and were not paid. They never met the subjects in person. The photos of the control group were kept in a locked drawer. Six months later, the data was unblinded.
THE SECOND-MOST ODDS-DEFYING, EYE-POPPING DISCOVERY IN THE LIFE AND WORK OF ELISABETH TARG
The research results showed that the subjects who were not prayed for spent 600 percent more days in the hospital. They contracted 300 percent as many AIDS-related illnesses. That's a pretty sensationalistic way of saying those who were prayed for were a lot less sick. Here's the somewhat less-sensational way of framing the results: The control group spent a total of 68 days in the hospital receiving treatment for 35 AIDS-related illnesses. The treatment group spent only 10 days in the hospital for a mere 13 illnesses. This begs all sorts of questions, which we will get to, but for the moment, consider the following: The chance of this occurring randomly is less than 1 in 20, meaning it is statistically significant. There was no placebo effect. For the patients, being less sick didn't correlate with believing they were being prayed for by the psychic healers. Not even close. Nearly 55 percent of both groups imagined or guessed or believed they were being prayed for - and they did no better than the others. Targ had a pedigree. She graduated from Stanford Medical School, did her residency at UCLA, and, at the time of the study, was an assistant professor of psychiatry at UCSF. The study, while controversial, eventually passed the scrutiny of peer review and was published by the Western Journal of Medicine. Targ was news. She appeared on Good Morning America and Larry King Live and was written about in Time. She instantly became a star in the New Age community - not as famous as doctors Deepak Chopra, Andrew Weil, and Larry Dossey, but more respected because of her scientific rigor. Although few doctors have read the study or know its details, it has achieved renown and is routinely cited - not as proof that prayer works, exactly, but as evidence that there's some connection between spirituality and healing.
THE VARIOUS QUESTIONS THIS BEGS
Is the "prayer effect" even theoretically possible? Are these psychic healers who I think they are? How did a reputable doctor come to risk her reputation studying the paranormal? What could be more odds-defying than this?
IS THIS EVEN THEORETICALLY POSSIBLE?
Targ refused to speculate. Her position: Use the scientific method to find out if an effect exists before trying to analyze how it works. For years, no one knew how morphine or aspirin worked - just that they were effective. The understanding came later. She presented her data dozens of times at conferences but never offered a hypothesis. She enjoyed its mystique, its unknowable nature. Even in private, she almost never let herself be drawn into these discussions. Her coauthor on the study, Fred Sicher, a psychologist, is an enthusiastic believer in the prayer effect, and he would get into long arguments with their biostatistician, Dan Moore, who took the role of skeptic. Targ never joined in. Her boyfriend, Mark Comings, was a theoretical physicist. He felt that an eight-dimensional universe could explain how a healer in Santa Fe could influence a patient in San Francisco: In our ordinary three-dimensional world, healer and patient appear far apart, but in one of the as-yet-unmeasurable extra dimensions, they'd be in the same place. Targ would shake him off - speculation wasn't for her. She had patients to care for. Although other people invoked her work as proof of God, Targ thought of it as proof of only one thing: that this should be studied more.
WHO ARE THESE PSYCHIC HEALERS?
On average, they had 17 years' experience, and each had treated more than a hundred patients from a distance. Many had graduated from a bioenergetic healing school on Long Island run by Barbara Brennan, a former NASA physicist. They had a variety of religious backgrounds, from Jewish to Christian to Buddhist to shamanist; however, their method of prayer was not an appeal to a higher power. Rather than ask God for help, the healers were directed to send positive healing energy, to direct an intention for health and well-being to the subject. The point was to test the ability of a person to affect another remotely, in a one-to-one relationship. Wackos at the other end of the religious spectrum frequently interrupted Targ's speeches at conferences, sometimes by shouting vitriol, sometimes by asking accusatory questions. They would shadow her through restaurants, sit down at her dinner table, lecture her on how the power of faith is not to be subjected to the rigors of science, how God is not to be questioned. They were afraid she might succeed, and reduce their god to a physics phenomenon. They were equally afraid she might fail, and discover nothing's there.
REALITY CHECK QUIZ
Here is a list of expert quotes from articles that have been written about Targ: "Elisabeth is our hero. She's a wonderful, groundbreaking researcher." - Dr. Mitchell Krucoff, Duke University "Medical research has shown that people who believe in God or in prayer generally fare better than those who don't. What remains unproven is whether prayer itself makes a difference." - Dr. Herbert Benson, Harvard Medical School "Nobody would dispute that for a great many people, religion provides comfort in times of distress, medical or otherwise. But there is no really good, compelling evidence that there is a relationship between religious involvement and health." - Dr. Richard Sloan, Columbia University Question 1: Based on these quotes, what would a reader of an ensuing article likely conclude? a) That most doctors think her research is a bogus waste of time and money. b) That doctors are evenly divided but open-minded about the prayer effect. Question 2: Which is closest to the truth, a or b?
WHAT YOU MIGHT WANT TO KNOW ABOUT HER UPBRINGING
"She had more permission to be psychic than anyone in history," proudly offers her father, Russell Targ, who in the 1970s conducted CIA-funded experiments in extrasensory perception at Stanford. Subjects in his lab attempted to describe objects hidden inside boxes and tried to get better at it through repetition, as if it was a learnable skill, like riding a unicycle. During the Cold War, his psychics would sit in a chair and calm their minds until they received visions and diagrams of certain military bases in Russia. Russell had an ESP machine, an early computer that asked subjects which of four colors they thought would randomly appear onscreen. Targ began training on the machine at age 10. When she played hide-and-seek with a girlfriend, Targ would attempt to find her by means of clairvoyance. She was expected to call out what was in her Christmas presents before opening them; if she guessed incorrectly, her father teased her: "What's wrong with you?" "I expected her to be intelligent, polite, and psychic," says Russell. He was a force. He was famous. He had helped invent the laser while at Lockheed. Her uncle was the world chess champion, Bobby Fischer. Greatness was assumed. And Targ was exceedingly bright. By the time she entered Palo Alto High School, she'd already skipped two grades. At 12, she was helping a Stanford researcher stick electrodes into monkey brains to examine hemispheric specialization. That's also when she conducted her first human experiment: demonstrating that left-handed people make more spelling errors than right-handed people. At 13, she tested crayfish feeding reflexes. In high school, she cofounded the debate team. "Truth through dialog" was her motto. She graduated from high school at 15, in 1977. Fluent in Russian - as well as French and German - she got a job in a psychology research department at Stanford, translating studies from the Soviet Union. Since Russia was an atheist country, parapsychology didn't carry the religious taboo it did here, and she was exposed to a lot of it. In her first semester at Pomona College, she conducted a study that took her father's favorite experiment - attempting to describe objects hidden inside boxes - and subjected it to double-blinded, randomized scientific rigor. This time, neither subject nor experimenter knew what had been placed in the box. Her teacher hated it; she transferred to Stanford. To her best friend, Janice Boughton, Targ simply seemed open-minded, influenced by those Russian studies she'd translated. "Parapsychology was her hobby, as if she played the trombone." During college, she would fool around with notions of being able to manipulate events in the near future. She called it Associative Remote Viewing. Hoping to be awarded grants for her research, she would associate that grant with an ordinary object, such as a vase or a teddy bear; then she and her friends would visualize this vase or teddy bear frequently, believing that the visualization would make the desired outcome more likely. She used a variation on this method when she got accepted to Stanford, and later, when she and Comings were trying to find an affordable house in San Francisco. She also put a lot of stock in her own intuition and dreams. All through her life, she had a recurring dream in which a birthday cake with 42 candles appeared (once, it was 42 birthday cakes). Targ became convinced this was a sign that she would die. At 42. Next year. 2003. All of which raises the question: Does her backstory as an ESP hobbyist make us regard her work with some suspicion? It has to - in the same way that her Stanford Medical School degree affords her legitimacy. The whole point of randomized, double-blind trials is to eliminate bias. On TV, Targ presented herself as just another medical researcher, but if she spent her entire life in search of the paranormal, it's not surprising that she eventually found traces of it.
HER ONGOING STUDY
Targ originally chose to study AIDS because it was a "gnarly disease," medical science's greatest riddle. During the AIDS pilot study, one of the patients developed brain cancer. Amazingly, this patient did not die and eventually made a full recovery. As it turned out, he had been in the treatment group - he had been prayed for. Fred Sicher, Targ's coauthor, reminded her of this patient after a confirmation study was completed. Although AIDS was no longer a death sentence, brain cancer still was. Could a healer 1,500 miles away really shrink a brain tumor? Targ learned all she could about a type of brain cancer called glioblastoma multiforme. In 2000, she applied to the National Institutes of Health's Center for Complementary and Alternative Medicine for $1.5 million to cover two 150-patient trials - one on brain cancer, and another confirmation study on AIDS. The NIH had never granted money to study distant healing. But people with brain cancer were dying, and nothing seemed to work. Her grant was approved. The data from the trials will not be available for at least three years. Her work is a linchpin in the history of scientific research; if these trials find a prayer effect, it will open the door to much more. If they fail to find one, this kind of research will retreat beyond the fringe.
WHAT TOO FEW PEOPLE KNOW ABOUT TARG'S FAMOUS AIDS STUDY
That her study had been unblinded and then "reblinded" to scour for data that confirmed the thesis - and the Western Journal of Medicine did not know this fact when it decided to publish. Her famous study was not, as its reputation suggests, designed to measure the number of AIDS-related illnesses. Targ and Fred Sicher had targeted their study to measure mortality but were caught off-guard by triple-drug anti-retroviral therapy, which became common practice one month into the six-month trial. When biostatistician Dan Moore broke the randomization code to unblind the data, it told them nothing - since only one patient had died, the data was meaningless. Moore brought Targ and Sicher into his office and showed him the data on his computer. Moore thought this new triple-drug therapy was nothing short of a medical miracle, the triumph of science. It was saving lives! But Targ and Sicher didn't want to see it that way. Targ asked him to crunch the numbers on the secondary scores - one a measure of HIV physical symptoms, the other a measure of quality of life. These came out inconclusive; the treatment group didn't score better than the control. Not what they wanted to find. In dismay, Targ called her father. He calmed her down, told her to keep looking. She had Moore run the mood state scores. These came out worse - the treatment group was in more psychological stress than the control group. Same for CD4+ counts. Targ flew down to Santa Fe to attend a conference at a Buddhist retreat run by her godmother. When she called back to Moore's office, Sicher answered. Moore was crunching the last data they had, hospital stays and doctor visits. "Looks like we have statistical significance!" Moore announced. Sicher told Targ, who turned and yelled out to her friends and the conference. Bingo. Later that week, Moore met with an AIDS physician at California Pacific Medical Center. This doctor thought distant healing was bogus but agreed to give advice. He remarked that the length of hospital stays wasn't very meaningful. Patients with health insurance tend to stay in hospitals longer than uninsured ones. He pointed Moore to an important AIDS paper that had been recently published. It defined the 23 illnesses associated with AIDS. He told Moore they ought to have been measuring the occurrence of these illnesses all along. Moore took this list to Targ and Sicher. There was only one problem. They hadn't collected this data. They gathered the medical charts and gave them to their assistant to black out the names of the patients. This done, Targ and Sicher began poring over the charts again, noting the data they hadn't previously collected. Since Sicher had interviewed many of these patients (up to three times), Moore worried Sicher could recognize them just by the dates they came to the hospital and what they were treated for. Sicher admitted he could (there were only 40). He had also seen which group each patient was assigned to, treatment or control, but he swore he didn't remember and maintained he was therefore impartial. (Sicher remembers this differently. He insists he couldn't recognize the patients from their charts and never knew which group each was in.) Targ told her boyfriend she was worried about Sicher's impartiality, but she took him at his word, even though Sicher was an ardent believer in distant healing, by his own frequent admission. He had put up the money himself for the pilot study ($7,500), had paid for the blood tests. He had a vested interest in the outcome. This isn't what science means by double-blind. The data may all be legitimate, but it's not good form. Statisticians call this the sharpshooter's fallacy - spraying bullets randomly, then drawing a target circle around a cluster. When Targ and Sicher wrote the paper that made her famous, they let the reader assume that all along their study had been designed to measure the 23 AIDS-related illnesses - even though they're careful never to say so. They never mentioned that this was the last in a long list of endpoints they looked at, or that it was data collected after an unblinding. I learned all this from Dan Moore and confirmed it with Mark Comings. Moore seemed unaware how explosive his version of the story was. "I was always troubled over the sifting it took for the data to hold together," he said. "I think Fred and Elisabeth missed the real story, which was the difference between medical science and alternative medicine. Triple-drug therapy was literally saving lives. We were only looking at secondary things." With this information, I reread the paper with an awe for how carefully they chose their words. Only with the benefit of this hindsight do holes emerge, ones that had been clouded by the scientific language and statistical commentary. David Spiegel, who runs the PsychoSocial Research Lab at Stanford, was the primary reviewer of Targ's paper for the Western Journal of Medicine. Targ's work, he said, deserved its reputation as the best-designed study measuring distant healing. Then I told him about the procedural flaws. "I'm even more troubled by the multiple endpoints than the unblinding," he said with increasing concern. "It's a little post hoc. Normally, we accept the standard that a finding must have less than a 1-in-20 chance of randomly occurring. When you're on your third or fourth attempt, it's much more likely a 1-in-20 event will occur, so the standard has to be higher. You divide the alpha by the number of attempts, thus 1 in 60, 1 in 80, et cetera. There was no indication of this recast standard." Spiegel continued: "It does change her work considerably. It puts it into more of an exploratory study, rather than a confirmatory study. It would be wrong to say it'd been proven."
WELL, WHAT ABOUT THE PILOT STUDY, IN WHICH THOSE WHO DIED WEREN'T "TREATED" WITH DISTANT HEALING?
Age was a confounding variable. Most of the 20 participants were in their mid-twenties to early thirties, but four were older. Three in their late thirties, and one in his sixties. Those oldest four patients died. They were all in the control group. In other words, the study provided fairly convincing evidence that if you had AIDS back in the mid-1990s, the older you were the more likely you were to die.
---------------------------------------------------------------------- Contributing writer Po Bronson (pbronson @pobronson.com) is the author of What Should I Do With My Life? (2003). Copyright (C) 1993-99 The Conde Nast Publications Inc. All rights reserved.