Revision summary
Descent theory centres unilineal groups, property, and segmentation. Fortes and Evans-Pritchard are the African type authors. Alliance theory centres the incest rule and spouse exchange. Lévi-Strauss and Dumont are the type authors. North Indian gotra and south Indian cross-cousin rules show both logics.
Model answer
Introduction
Descent theory and alliance theory are two ways to read kinship. One starts from the group that recruits children. The other starts from the marriage that binds groups.
Body
Descent theory
- Maine, Morgan, then Fortes and Evans-Pritchard made unilineal descent the political skeleton.
- Cardinal points: filiation, jural authority, corporate property, and segmentary opposition.
- The lineage owns land and blood-debt. The mother’s brother may be affective, as Fortes split the domestic from the politico-jural.
- African models—Nuer, Tallensi, Tiv—were the type. The person is a member first, a spouse second.
Alliance theory
- Lévi-Strauss in The Elementary Structures of Kinship made incest taboo and exchange of women the start of society.
- Cardinal points: positive marriage rules, cross-cousin prescriptions, restricted versus generalised exchange, and alliance as a structure of repeating affinal ties.
- Dumont applied this to south Indian Dravidian kinship: affines are a category, not a failure of descent.
- Leach on Kachin showed that mayu–dama alliance can rank groups.
Cardinal contrast
- Descent asks: who is the heir? Alliance asks: who is the repeating affine?
- Needham and later critics said both can over-systematise practice.
- Indian ethnography needs both: north Indian gotra exogamy (descent-like) and south Indian cross-cousin preference (alliance-like).
Flow diagram
flowchart TD KIN[Kinship] --> DE[Descent lineage jural] KIN --> AL[Alliance exchange marriage] DE --> AF[Nuer Fortes] AL --> LS[Levi-Strauss Dumont]
Conclusion
Descent theory’s cardinal points are lineage, filiation, and jural corporation. Alliance theory’s are incest, prescribed marriage, and repeating exchange. Kinship in the field often runs both engines.
Quick related
Students also ask
-
Must a society choose one theory?
No. Analysts choose a starting point. People practise descent and marriage together.
-
Is alliance only about women as gifts?
The classical formula is gendered. Later work adds women’s agency and same-sex or cash marriage.
PYQ trend
When UPSC asked this
Related PYQs from other years, newest first. Open a question to read it.
-
2025 · Q1(b) · Anthropology GS 1 · 10 marks
Theoretical significance of Purum kinship-system. -
2023 · Q8(c) · Anthropology GS 1 · 15 marks
Critically discuss A.L. Kroeber's contribution to kinship studies. -
2021 · Q5(d) · Anthropology GS 1 · 10 marks
Descent Groups -
2016 · Q1(c) · Anthropology GS 1 · 10 marks
Lineage and Clan
More from this topic
Q1(b) · UPSC Mains 2025 · Anthropology GS 1 · 10 marks
Theoretical significance of Purum kinship-system.
Kinship
The Purum are a Kuki-Chin group used by Needham as a test case for alliance theory. The claim was prescriptive marriage to mother’s brother’s daughter, with wife-givers and wife-takers in a cycle. Needham argued against Homans and Schneider: the pattern is structure, not sentiment. The case mattered because it took elementary structures beyond Australia and clarified prescription versus preference. Ackerman and others showed that the tables did not seal the cycle as neatly as the model. The lasting names are Lévi-Strauss, Needham and the model–practice gap.
Q8(c) · UPSC Mains 2023 · Anthropology GS 1 · 15 marks
Critically discuss A.L. Kroeber's contribution to kinship studies.
Kinship
Kroeber’s 1909 paper treated classificatory kinship as linguistic-cultural, not as a primitive stage. Eight principles generate terminological pattern. Kinship sits in the superorganic, not in raw biology or psychology. California ethnography supplied cases inside Boasian culture history. Lévi-Strauss wanted alliance, Schneider wanted to question the genealogical grid. Kroeber remains the terms-as-culture charter, not the whole of kinship theory.
Q5(d) · UPSC Mains 2021 · Anthropology GS 1 · 10 marks
Descent Groups
Kinship
A descent group is recruited by a rule of ancestry. Unilineal clans and lineages are corporate; kindreds are often not. They organise exogamy, property, office, and feud. Nuer lineages and Trobriand sub-clans are type cases. Descent is not the same thing as the domestic family.
Toppers' copies
Toppers' copies for this question will be uploaded soon.