Divination

Written records from Shang China

One well-documented early example comes from late Shang China. Museum material describes oracle bones, ox shoulder blades and tortoise plastrons that were cleaned, etched and drilled, then heated until they fractured, with a diviner reading the cracks. The bones are dated to about 1200 to 1050 BC, and their inscriptions record questions and interpretations on matters from military strategy to royal health, in some of the earliest instances of Chinese script.

Rome and late antiquity

Cicero's dialogue De Divinatione, in the 1923 Loeb translation by William Falconer, has the character Quintus divide divination into an artificial kind, covering soothsayers, interpreters of prodigies and lightning, and augurs, and a natural kind, covering dreams and frenzy. In the second book the character Marcus argues against the practice, objecting to entrail reading, auspices and Chaldean astrology, so the text preserves both a classification and a sceptical reply.

A 2018 volume on late antique sortilege, reviewed in 2019, covers bibliomancy (opening a sacred text at random), ticket oracles, dice and books of fate such as the Sortes Astrampsychi. The reviewer reports that the editors present it as ritual, scribal and textual practice, and that the volume challenges the view that early Christians uniformly rejected it; Augustine's account of opening scripture after hearing 'tolle lege' is an example.

Transmission and later scholarship

A University of Tübingen research project describes geomancy as originally codified in Arabic as ʿilm al-raml, the 'science of sand', and says documented origins reach back only to twelfth-century Latin treatises based on lost Arabic predecessors. It treats a text by Ibn al-Maḥfūf as the earliest standardised work. This is a project description, not a finished account.

A reviewer of Johnston and Struck's 2005 collection Mantikê notes that it takes direction from the 1974 essay collection Divination et rationalité, associated with Jean-Pierre Vernant, and aims to reassess divination in Greek and Roman life. The review reports that contributors treat it as integrated into religion, philosophy, poetry and politics, not as peripheral.

Narrow and broad definitions

A 2025 Cambridge Element by Ze Hong proposes two definitions: a narrow sense, communication with deities, and a broad sense, scientifically implausible information technologies. Hong argues that such practices are attempts to generate information for decision-making, and the author's definitions are one scholar's proposal, not an agreed standard. Cicero's older split into artificial and natural divination uses a different criterion, whether the sign is interpreted by skill or received by inspiration.

Regional organisation and method names

Loewe and Blacker's 1981 volume Oracles and Divination arranges nine chapters by region or culture: Tibet, China, Japan, the classical world, the Germanic world, the Babylonians and Hittites, ancient Egypt, ancient Israel and Islam. This reflects a scholarly habit of describing each tradition in its own setting, which this page follows, so similar-sounding methods in different regions are not treated as equivalent.

Names for methods are often built on the medium used. The Tübingen project cited above gives ʿilm al-raml ('science of sand') as the Arabic source of geomancy, and the late antique volume uses sortilege for lot-based methods such as bibliomancy, ticket oracles and dice. The Greek word mantikê appears in the title of Johnston and Struck's collection on ancient divination.

Divination and diagnosis

A study of the Babylonian Diagnostic Handbook compared its divinatory and diagnostic patterns of interpretation and concluded that the logic of medical diagnosis there differs substantially from that of divination. Its author cautions that this cannot be taken as hard evidence that Babylonian diagnosis was empirical. The two terms should therefore not be treated as synonyms, even in sources where they appear together.

Elements found in many forms

Across the sources reviewed, a consultation typically involves a question, a medium that yields a sign, and an interpreter. On Shang oracle bones the questions and the interpretations were engraved on the bone. Hong describes the common aim as generating information that can inform a decision, which is a scholar's characterisation of the family and not a description of every tradition's own purpose.

How procedures differ

Procedures differ widely. A Pitt Rivers Museum record of a photograph taken in 1927 by E. E. Evans-Pritchard shows an Azande poison oracle consultation: an operator gives poison to a fowl while the questioner addresses the oracle, away from habitation to secure secrecy and avoid pollution. The record cites Evans-Pritchard's 1937 book Witchcraft, Oracles and Magic among the Azande, pages 294 to 312.

Lot-based methods in late antiquity used dice, tickets or a text opened at random, and geomancy is described as a sand-based system. These examples show that the setting, the practitioner's role and the tools vary by tradition, so no single session can be taken as typical of the family.

Historical and ethnographic uses

Shang oracle-bone inscriptions concerned matters from military strategy to royal health. The late antique volume on sortilege shows lot practices intersecting with biblical interpretation, legal proceedings and economic conditions, according to its reviewer. Among the Nuosu of south-west China, an ethnographic study describes divination as used to identify ghosts and as part of exorcism and healing rituals, and reports that people treat it as an instrument for specific ends while often feeling considerable uncertainty about its efficacy.

Uses alongside medical care

A historical essay on modern China describes how successive regimes tried to separate psychiatry, deemed scientific, from divination, deemed superstitious. The author argues that fortune telling and shamanism nonetheless served moral and interpersonal functions that complemented psychiatric skills. This is one historian's interpretation of one national context, and the sources reviewed do not document why people consult diviners in other places or today.

Searches and what they found

For this page, PubMed was searched for review, systematic, health and psychological papers with divination in the title, and for tarot, astrology, fortune-telling or psychic reading combined with systematic review or randomised designs. No systematic review or controlled trial testing divination, as a family, for a health outcome was found. Trial registries and non-biomedical databases were not searched, so this is an absence in the sources reviewed, not proof that none exist.

Anthropological and modelling studies

A 2021 paper by Hong and Henrich presents evidence that divination is often best viewed as an epistemic technology and builds formal models. It reports that strong prior belief, underreporting of negative evidence and misinferring belief from behaviour can each lead people to overestimate efficacy. These are model results about how beliefs persist, not tests of whether a given method predicts outcomes.

Hong's 2022 ethnography of the Nuosu argues that the efficacy of the practices studied is often overestimated because failures go unreported and because people misjudge the probability of uncertain events. The author describes the practices as objectively ineffective, which is the author's own assessment from one community, and it should not be transferred to other traditions.

Why findings do not transfer

Divination includes card, number, sign, lot and oracle methods that differ in tools, claims and purpose, and definitions vary between scholars. A result for one member, such as a matching test of astrological charts, says nothing direct about another, such as Ifá or the I Ching. Member pages should be read for method-specific findings; this page reports only what applies across the family.

Divination as a randomisation device

In a 1957 paper, Omar Khayyam Moore proposed that Naskapi scapulimancy could function as a randomisation device that improved hunting decisions. Michael Dove's 1993 study of Kantu' agricultural augury in Borneo is summarised in a secondary account as finding no discernible link between omen birds and crop success, with Dove concluding that randomness could be an asset under unpredictable conditions. Both accounts here come from summaries, and the sources reviewed report no test of the hunting claim.

A separate field experiment is not about divination. Levitt reported about 20,000 coin flips by people facing difficult decisions; those told by the coin to make a change were more likely to do so and reported greater happiness six months later. This concerns randomising a personal choice and does not show that any divinatory method is accurate.

Perceived accuracy and the Barnum effect

In 1949 Bertram Forer gave 39 introductory psychology students an identical personality sketch drawn largely from an astrology book; their mean accuracy rating was 4.3 out of 5. A 1985 review by Dickson and Kelly reports that acceptance of such vague statements rises when they are favourable and when presented as being 'for you', and that the original study cautions that personal validation cannot affirm the validity of an assessment device.

Pattern perception and persistence

Six experiments reported by Whitson and Galinsky in 2008 found that participants who lacked control were more likely to see illusory patterns, including images in noise and superstitions. They were laboratory studies of non-divinatory tasks and do not show that people who consult diviners lack control. Boyer's 2020 article analyses divination through evolved psychology and strategic interaction in the production of truth.

What the sources report about harms

None of the sources reviewed measures harms from consulting diviners, so their frequency and severity are not known from this evidence. Two cautions follow from the cognitive literature: failures may go unreported, as Hong and Henrich's models show, and a reading that feels accurate does not validate the method, as Forer cautioned. Costs, dependence and misinterpretation are plausible concerns but are not quantified in the sources reviewed.

Care boundaries and consent

A reading is a belief-based or interpretive activity and is not a medical, psychological, legal or financial assessment. It should not delay or replace necessary care, and anyone in acute distress, or with concerns about their health, can seek assessment from a qualified professional. A person can ask what a method claims, what it costs, and how the practitioner treats the person's own choices, and may stop a session at any time.

Training and regulation

No statutory regulation or common training standard covering divination as a family was found in the sources reviewed. Training and professional standing differ by tradition and are described on the pages of individual members where sources exist. The scholarly sources cited here describe practice and history, and none documents an accreditation system for the family as a whole.