Daryl Bem

Last updated
Daryl J. Bem
DarylBem (cropped).jpg
Bem at a conference in 1983.
Born (1938-06-10) June 10, 1938 (age 86)
Alma mater University of Michigan
Occupation(s) Social psychologist, parapsychologist
Known for Self-perception theory
Website dbem.org

Daryl J. Bem (born June 10, 1938) is a social psychologist and professor emeritus at Cornell University. He is the originator of the self-perception theory of attitude formation and change. He has also researched psi phenomena, [1] [2] group decision making, handwriting analysis, sexual orientation, and personality theory and assessment.

Contents

Early life and education

Bem received a BA in physics from Reed College in Portland, Oregon, in 1960 and began graduate work in physics at the Massachusetts Institute of Technology. The civil rights movement had just begun, and he became so intrigued with the changing attitudes toward desegregation in the American South that he decided to switch fields and pursue a career as a social psychologist specializing in attitudes and public opinion. He obtained his PhD in social psychology from the University of Michigan in 1964. [3]

Career

Bem taught at Carnegie Mellon University, Stanford, Harvard, and Cornell University. He started at Cornell in 1978 and retired in 2007, [3] becoming a professor emeritus. [4]

Bem testified before a subcommittee of the United States Senate on the psychological effects of police interrogation [5] and served as an expert witness in court cases involving sex discrimination. [3]

Self-perception theory

In 1972, Bem proposed the self-perception theory of attitude change, [6] which proposes a different mechanism of change than that of Leon Festinger's cognitive dissonance theory. The two theories appear contradictory. Dissonance theory explains how people change their attitudes when they find themselves acting in opposition to the attitudes they already hold, while self-perception theory explains how people create their attitudes in the first place. [7]

According to self-perception theory, people infer their attitudes from their own behavior much as an outside observer might. [6] For example, just as a person might watch someone else giving a pro-Fidel Castro speech and infer that the person is in favor of Castro, a person who is asked to give such a speech would consequently come to view themself as more in favor of Castro.

In 1970, Bem and Keith McConnell demonstrated that people are often unaware of attitude changes caused by their behavior. Instead, people believe that the views they currently hold are the views that they have always held. Bem and McConnell demonstrated this by measuring the change in Carnegie Mellon students' attitudes toward having control of their university curriculum. After an initial measurement of student attitudes, which were favorable toward student control, Bem and McConnel assigned students to write an essay opposing student control. By writing an essay proclaiming views different from the ones they held, students' views changed to become less favorable toward student control. When Bem and McConnell asked the students how they had felt at the beginning of the study, students insisted that they had always felt less favorable toward student control. The students believed that the experiment had not changed their opinions, even though it had changed their opinions significantly. [8]

Exotic becomes erotic theory

Bem's exotic becomes erotic theory (EBE) presents one possible explanation as to what differentiates the etiology of homosexuality from heterosexuality. [9] Bem theorized that the influence of biological factors on sexual orientation may be mediated by experiences in childhood, that the child's temperament predisposes the child to prefer certain activities over others. [10] Bem noted that because of their temperament, which is influenced by biological variables such as genetic factors, some children will be attracted to activities that are commonly enjoyed by other children of the same gender, while others will prefer activities that are typical of the other gender. Bem theorized that this makes a gender-conforming child feel different from opposite-gender children, while gender-nonconforming children will feel different from children of their own gender. He believes that this feeling of difference evokes physiological arousal when the child is near members of the gender which the child considers as being "different". Bem theorizes that this physiological arousal is later transformed into sexual arousal: that is, as adults, people become sexually attracted to the gender which they came to see as different, or "exotic", while they were children. [11]

Bem based this theory in part on the finding that a majority of gay men and lesbians report being gender-nonconforming during their childhood years. A meta-analysis of 48 studies showed childhood gender nonconformity to be the strongest predictor of a homosexual orientation for both men and women. [12] Bem also noted that in a study by the Kinsey Institute of approximately 1000 gay men and lesbians (and a control group of 500 heterosexual men and women), 63% of both gay men and lesbians reported that they did not like activities typical of their sex in childhood, compared with only 10–15% of heterosexual men and women. Bem also drew from six prospective studies, longitudinal studies that began with gender-nonconforming boys around age 7 and followed them into adolescence and adulthood; a majority (63%) of the gender nonconforming boys become gay or bisexual as adults. [13]

Two criticisms of Bem's theory in the journal Psychological Review concluded that "studies cited by Bem and additional research show that Exotic Becomes Erotic theory is not supported by scientific evidence." [14] Bem was criticized for relying on a non-random sample of gay men from the 1970s (rather than collecting new data) and for drawing conclusions that appear to contradict the original data. An "examination of the original data showed virtually all respondents were familiar with children of both sexes", and that only 9% of gay men said that "none or only a few" of their friends were male, and most gay men (74%) reported having "an especially close friend of the same sex" during grade school. [14] Further, "71% of gay men reported feeling different from other boys, but so did 38% of heterosexual men. The difference for gay men is larger, but still indicates that feeling different from same-sex peers was common for heterosexual men." Bem also acknowledged that gay men were more likely to have older brothers (the fraternal birth order effect), which appeared to contradict an unfamiliarity with males. Bem cited cross-cultural studies which also "appear to contradict the EBE theory assertion", such as the Sambia tribe in Papua New Guinea, which ritually enforced homosexual acts among teenagers, yet once these boys reached adulthood, only a small proportion of men continued to engage in homosexual behaviour - similar to levels observed in the United States. [14] Additionally, Bem's model could be interpreted as implying that if one could change a child's behavior, one could change their sexual orientation, but most psychologists doubt this would be possible. [15]

Neuroscientist Simon LeVay has said that while the theory was arranged in a "believable temporal order", [16] : 65  that it ultimately "lacks empirical support". [16] : 164  Social psychologist Justin LehMiller stated that "Bem's theory has received a lot of praise for the way it seamlessly links biological and environmental influences" and that there "is also some support for the model in the sense that childhood gender nonconformity is indeed one of the strongest predicators of adult homosexuality", but that the validity of the model "has been questioned on numerous grounds and scientists have largely rejected it." [15]

Ganzfeld experiment

In parapsychology, Bem is known for his defense of the ganzfeld experiment as evidence of psi, more commonly known as extrasensory perception or psychic phenomena. [17]

Bem and Charles Honorton (1994) reviewed the experimental arrangements of the autoganzfeld experiments, and concluded they provided excellent security against deception by subjects and sensory cues. [17] However, Ray Hyman disagreed with Bem and Honorton as he claims to have discovered some interesting patterns in the data that implied visual cues may have taken place in the experiments. Hyman wrote that the autoganzfeld experiments were flawed because they did not preclude the possibility of sensory leakage. [18] Bem and Honorton's review was criticized by the scientific community as it contained errors. [18] [19] [20] [21] Julie Milton and Richard Wiseman (1999) who discovered errors in Bem's research carried out a meta-analysis of ganzfeld experiments in other laboratories. They found no psi effect, the results showed no effect greater than chance from a database of 30 experiments and a non-significant Stouffer Z of 0.70. [19]

Psychologist Susan Blackmore also criticized Bem's review of the Ganzfeld literature, noting that of the nine studies that were used for the review, five came from one laboratory (Chuck Honorton's). Blackmore also noted that Bem included experiments from Carl Sargent in the review, and Blackmore had previously found that Sargent had "deliberately violated his own protocols and in one trial had almost certainly cheated." According to Blackmore, psychologists reading Bem's review in Psychological Bulletin would "not have a clue that serious doubt had been cast on more than a quarter of the studies involved". Blackmore recounts having a discussion with Bem at a consciousness conference where she challenged him on his support of Sargent and Honorton's research; he replied "it did not matter". Writing for Skeptical Inquirer Blackmore states "But it does matter. ... It matters because Bem's continued claims mislead a willing public into believing that there is reputable scientific evidence for ESP in the Ganzfeld when there is not". [22] [1]

"Feeling the Future" controversy

In 2011, Bem published the article "Feeling the Future: Experimental Evidence for Anomalous Retroactive Influences on Cognition and Affect" in the Journal of Personality and Social Psychology that offered statistical evidence for psi. [23] The article's findings challenged modern scientific conceptions about the unidirectional nature of time. Its presentation by a respected researcher, and its publication by an upper-tier journal, engendered much controversy. In addition to criticism of the paper itself, [24] the paper's publication prompted a wider debate on the validity of peer review process for allowing such a paper to be published. [25] Bem appeared on MSNBC [26] and The Colbert Report [27] to discuss the experiment. American author and researcher Mitch Horowitz has noted that Bem's experiments in precognition and retrocausality, which have been validated in a meta-analysis of 90 trials in 33 labs in 14 nations, comport not only with relativity but also with interpretations of quantum physics. [28] [29] [30]

Wagenmakers et al. criticized Bem's statistical methodology, saying that he incorrectly provides one-sided p-value when he should have used a two-sided p-value. [31] This could account for the marginally-significant results of his experiment. Bem and two statisticians subsequently published a rebuttal to this critique in the Journal of Personality and Social Psychology. [32]

Jeffrey Rouder and Richard Morey, who applied a meta-analytical Bayes factor to Bem's data, concluded, "We remain unconvinced of the viability of ESP. There is no plausible mechanism for it, and it seems contradicted by well-substantiated theories in both physics and biology. Against this background, a change in odds of 40 is negligible. [33] [34]

After evaluating Bem's nine experiments, psychologist James Alcock said that he found metaphorical "dirty test tubes," or serious methodological flaws, such as changing the procedures partway through the experiments and combining results of tests with different chances of significance. It is unknown how many tests were actually performed, nor is there an explanation of how it was determined that participants had "settled down" after seeing erotic images. Alcock concludes that "Just about everything that could be done wrong in an experiment occurred here". [35] Bem's response to Alcock's critique appeared online at the Skeptical Inquirer website, [36] and Alcock replied to these comments in a third article at the same website. [37]

One of the nine experiments in Bem's study ("Retroactive Facilitation of Recall") was repeated by scientists Stuart J. Ritchie, Chris French, and Richard Wiseman. Their attempt to replicate was published in PLoS ONE and found no evidence of precognition. [38] Several failed attempts by the authors to publish their replication attempt highlighted difficulties in publishing replications, attracting media attention over concerns of publication bias. [39] [40] [41] The Journal of Personality and Social Psychology, Science Brevia and Psychological Science each rejected the paper on the grounds that it was a replication. [42] A fourth journal, the British Journal of Psychology , refused the paper after reservations from one referee, later confirmed to be Bem himself, who "might possibly have a conflict of interest with respect to [the] ... submission." [42] Wiseman set up a register to keep track of other replicating efforts to avoid problems with publication bias, and planned to conduct a meta-analysis on registered replication efforts. [43] [44]

In 2012, two independent articles found that the number of rejections of the null hypothesis reported by Bem (nine out of ten tested) is abnormally high, given the properties of the experiments and reported effect sizes (Francis, 2012; Schimmack, 2012 [45] ). Schimmack (2015) [46] used a more powerful test to reveal selection for significance, the Test of Insufficient Variance, and found even stronger evidence that the reported studies are biased in favor of supporting ESP. These findings imply that studies with non-significant results are missing and the reported evidence overstates the strength of the effect and evidence. According to Francis, this suggests that Bem's experiments cannot be taken as a proper scientific study, as critical data is likely unavailable. [47]

The publication of Bem's article and the resulting controversy prompted a wide-ranging commentary by Etienne LeBel and Kurt Peters. [48] Using Bem's article as a case study, they discussed deficiencies in the accepted methodology most commonly used in experimental psychology. LeBel and Peters suggest that experimental psychology is systemically biased toward interpretations of data that favor the researcher's theory.

In 2012, the same journal that published Bem's original experiments, The Journal of Personality and Social Psychology (Vol. 103, No. 6), published "Correcting the Past: Failures to Replicate Psi" by Jeff Galak of Carnegie Mellon University, Robyn A. LeBoeuf of the University of Florida, Leif D. Nelson of the University of California at Berkeley, and Joseph P. Simmons of the University of Pennsylvania. The paper reported seven experiments testing for precognition that "found no evidence supporting its existence." [49]

In a 2017 follow-up article in Slate magazine on the "Feeling the Future" experiments, Bem is quoted as saying, “I’m all for rigor, but I prefer other people do it. I see its importance—it’s fun for some people—but I don’t have the patience for it.” The article continues: "It’s been hard for him, he said, to move into a field where the data count for so much. “If you looked at all my past experiments, they were always rhetorical devices. I gathered data to show how my point would be made. I used data as a point of persuasion, and I never really worried about, ‘Will this replicate or will this not?’”" [50] While fellow psychologist Stuart Vyse sees this statement as coming "remarkably close to an outright admission of p-hacking", he also notes that Bem "has been given substantial credit for stimulating the movement to tighten the standards for research" such as that taking place in open science. [51]

A large-scale pre-registered replication in 2023, which included Bem and other ESP proponents in its design, found no evidence for precognition. [52]

Family life

Bem married Sandra Bem (née Lipsitz), [53] also a psychology professor, in 1965. Though still legally married, they were "amicably separated" from 1994 until her death in 2014. [54] [55] In 2015, he married his partner of twenty years, Ithaca College professor of communication studies, performance studies, and queer studies Bruce Henderson. They live in Ithaca, NY. [56]

Selected publications

Related Research Articles

<span class="mw-page-title-main">Clairvoyance</span> Claimed form of extrasensory perception

Clairvoyance is the claimed ability to acquire information that would be considered impossible to get through scientifically proven sensations, thus classified as extrasensory perception, or "sixth sense". Any person who is claimed to have such ability is said to be a clairvoyant.

Extrasensory perception (ESP), also known as a sixth sense, or cryptaesthesia, is a claimed paranormal ability pertaining to reception of information not gained through the recognized physical senses, but sensed with the mind. The term was adopted by Duke University botanist J. B. Rhine to denote psychic abilities such as intuition, telepathy, psychometry, clairvoyance, clairaudience, clairsentience, empathy and their trans-temporal operation as precognition or retrocognition.

<span class="mw-page-title-main">Parapsychology</span> Study of paranormal and psychic phenomena

Parapsychology is the study of alleged psychic phenomena and other paranormal claims, for example, those related to near-death experiences, synchronicity, apparitional experiences, etc. Criticized as being a pseudoscience, the majority of mainstream scientists reject it. Parapsychology has also been criticized by mainstream critics for claims by many of its practitioners that their studies are plausible despite a lack of convincing evidence after more than a century of research for the existence of any psychic phenomena.

Parapsychology is a field of research that studies a number of ostensible paranormal phenomena, including telepathy, precognition, clairvoyance, psychokinesis, near-death experiences, reincarnation, and apparitional experiences.

Social psychology is the scientific study of how thoughts, feelings, and behaviors are influenced by the actual, imagined, or implied presence of others. Social psychologists typically explain human behavior as a result of the relationship between mental states and social situations, studying the social conditions under which thoughts, feelings, and behaviors occur, and how these variables influence social interactions.

<span class="mw-page-title-main">Telepathy</span> Psychic ability

Telepathy is the purported vicarious transmission of information from one person's mind to another's without using any known human sensory channels or physical interaction. The term was first coined in 1882 by the classical scholar Frederic W. H. Myers, a founder of the Society for Psychical Research (SPR), and has remained more popular than the earlier expression thought-transference.

Precognition is the purported psychic phenomenon of seeing, or otherwise becoming directly aware of, events in the future.

<span class="mw-page-title-main">Ganzfeld experiment</span> Pseudoscientific test for extrasensory perception (ESP)

A ganzfeld experiment is an assessment used by parapsychologists that they contend can test for extrasensory perception (ESP) or telepathy. In these experiments, a "sender" attempts to mentally transmit an image to a "receiver" who is in a state of sensory deprivation. The receiver is normally asked to choose between a limited number of options for what the transmission was supposed to be and parapsychologists who propose that such telepathy is possible argue that rates of success above the expectation from randomness are evidence for ESP. Consistent, independent replication of ganzfeld experiments has not been achieved, and, in spite of strenuous arguments by parapsychologists to the contrary, there is no validated evidence accepted by the wider scientific community for the existence of any parapsychological phenomena. Ongoing parapsychology research using ganzfeld experiments has been criticized by independent reviewers as having the hallmarks of pseudoscience.

Paranormal events are purported phenomena described in popular culture, folk, and other non-scientific bodies of knowledge, whose existence within these contexts is described as being beyond the scope of normal scientific understanding. Notable paranormal beliefs include those that pertain to extrasensory perception, spiritualism and the pseudosciences of ghost hunting, cryptozoology, and ufology.

In the field of psychology, cognitive dissonance is described as the mental disturbance people feel when they realize their cognitions and actions are inconsistent or contradictory. This may ultimately result in some change in their cognitions or actions to cause greater alignment between them so as to reduce this dissonance. Relevant items of information include peoples' actions, feelings, ideas, beliefs, values, and things in the environment. Cognitive dissonance is typically experienced as psychological stress when persons participate in an action that goes against one or more of those things. According to this theory, when an action or idea is psychologically inconsistent with the other, people do all in their power to change either so that they become consistent. The discomfort is triggered by the person's belief clashing with new information perceived, wherein the individual tries to find a way to resolve the contradiction to reduce their discomfort.

Self-perception theory (SPT) is an account of attitude formation developed by psychologist Daryl Bem. It asserts that people develop their attitudes by observing their own behavior and concluding what attitudes must have caused it. The theory is counterintuitive in nature, as the conventional wisdom is that attitudes determine behaviors. Furthermore, the theory suggests that people induce attitudes without accessing internal cognition and mood states. The person interprets their own overt behaviors rationally in the same way they attempt to explain others' behaviors.

<span class="mw-page-title-main">Helmut Schmidt (parapsychologist)</span>

Helmut Schmidt was a German-born physicist and parapsychologist whose experiments on extrasensory perception were widely criticized for machine bias, methodological errors and lack of replication. Critics also noted that necessary precautions were not taken to rule out the possibility of fraud.

Charles Henry Honorton was an American parapsychologist and was one of the leaders of a collegial group of researchers who were determined to apply established scientific research methods to the examination of what they called "anomalous information transfer" and other phenomena associated with the "mind/body problem"—the idea that mind might, at least in some respects, have a physical existence independent of the body.

<span class="mw-page-title-main">Charles Tart</span> American psychologist and parapsychologist

Charles T. Tart is an American psychologist and parapsychologist known for his psychological work on the nature of consciousness, as one of the founders of the field of transpersonal psychology, and for his research in parapsychology.

<span class="mw-page-title-main">Stanley Krippner</span> American parapsychologist

Stanley Krippner is an American psychologist and parapsychologist. He received a B.S. degree from the University of Wisconsin–Madison in 1954 and M.A. (1957) and Ph.D. (1961) degrees from Northwestern University.

Sandra Ruth Lipsitz Bem was an American psychologist known for her works in androgyny and gender studies. Her pioneering work on gender roles, gender polarization and gender stereotypes led directly to more equal employment opportunities for women in the United States.

Sensory leakage is a term used to refer to information that transferred to a person by conventional means during an experiment into extrasensorial perception (ESP).

<span class="mw-page-title-main">James Alcock</span> Canadian educator (born 1942)

James E. Alcock is Professor emeritus (Psychology) at York University (Canada). Alcock is a noted critic of parapsychology and a Fellow and Member of the Executive Council for the Committee for Skeptical Inquiry. He is a member of the Editorial Board of The Skeptical Inquirer, and a frequent contributor to the magazine. He has also been a columnist for Humanist Perspectives Magazine. In 1999, a panel of skeptics named him among the two dozen most outstanding skeptics of the 20th century. In May 2004, CSICOP awarded Alcock CSI's highest honor, the In Praise of Reason Award. The author of several books and peer reviewed journal articles, Alcock is also an amateur magician and a member of the International Brotherhood of Magicians.

<span class="mw-page-title-main">C. E. M. Hansel</span> British psychologist and parapsychology critic (1917–2011)

Charles Edward Mark Hansel was a British psychologist most notable for his criticism of parapsychological studies.

Eric-Jan Wagenmakers is a Dutch mathematical psychologist. He is a professor at the Methodology Unit in the Department of Psychology at the University of Amsterdam (UvA). Since 2012, he has also been Professor of Neurocognitive Modeling: Interdisciplinary Integration at UvA's Faculty of Social and Behavioral Sciences. A noted expert on research methods in psychology, he has been highly critical of some dubious practices by his fellow psychologists, including Daryl Bem's research purporting to find support for the parapsychological concept of extrasensory perception, and the tendency for psychologists in general to favor the publication of studies with surprising, eye-catching results. He has also been actively addressing the replication crisis in psychology by helping to conduct a series of studies aimed at reproducing a 1988 study on the supposed effects of smiling on the perceived funniness of cartoons. František Bartoš, Dr Wagenmakers, Alexandra Sarafoglou, Henrik Godmann, and many colleagues were awarded the 2024 Ig Nobel Probability Prize for "showing, both in theory and by 350,757 experiments, that when you flip a coin, it tends to land on the same side as it started."

References

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  2. ↑ Chandler, David L. (February 15, 1993). Study finds evidence of ESP phenomenon. Boston Globe
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  5. ↑ Staff report (July 21, 1966). Senators Hear an Interrogation In Study of Confession Ruling The New York Times
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  32. ↑ Bem, D. J.; Utts, J.; Johnson, W. O. (October 2011). "Must psychologists change the way they analyze their data?" (PDF). Journal of Personality and Social Psychology. 101 (4): 716–719. CiteSeerX   10.1.1.694.2507 . doi:10.1037/a0024777. PMID   21928916. Archived from the original (PDF) on 2011-07-14.
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  34. ↑ "Odds are against ESP: New statistical approach doesn't support claims that extra-sensory perception exists". Science Daily.
  35. ↑ James Alcock, Back from the Future: Parapsychology and the Bem Affair, March/April 2011 Skeptical Inquirer, January 6, 2011.
  36. ↑ Bem, Daryl (January 6, 2011). "Response to Alcock's "Back from the Future: Comments on Bem"" . Retrieved January 31, 2012.
  37. ↑ Alcock, James (January 6, 2011). "Response to Bem's Comments" . Retrieved January 31, 2012.
  38. ↑ Ritchie, Stuart J.; Wiseman, Richard; French, Christopher C.; Gilbert, Sam (March 2012). Gilbert, Sam (ed.). "Failing the Future: Three Unsuccessful Attempts to Replicate Bem's 'Retroactive Facilitation of Recall' Effect". PLOS ONE. 7 (3): e33423. Bibcode:2012PLoSO...733423R. doi: 10.1371/journal.pone.0033423 . PMC   3303812 . PMID   22432019.
  39. ↑ Goldacre, Ben (April 23, 2011). "Backwards step on looking into the future". The Guardian . Retrieved March 17, 2012.
  40. ↑ Aldhous, Peter (May 5, 2011). "Journal rejects studies contradicting precognition". New Scientist . Retrieved March 17, 2012.
  41. ↑ Jarrett, Christian (May 11, 2011). "Psi study highlights replication problems". The Psychologist . Retrieved March 17, 2012.
  42. 1 2 French, Chris (March 15, 2012). "Precognition studies and the curse of the failed replications". The Guardian . Retrieved March 17, 2012.
  43. ↑ Goldacre, Ben (April 23, 2011). "Backwards step on looking into the future". The Guardian. Retrieved February 1, 2012.
  44. ↑ Wiseman, Richard. "Replication Registry: Are you conducting a replication of Daryl Bem's 'Feeling the Future' experiments?" . Retrieved February 1, 2012.
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