Multiple Selves
The view, shared across philosophy, psychology, behavioral economics, and contemplative traditions, that a person is best modeled not as a single unified self but as a collection of distinct selves across time, context, and motivation.
Also known as: Plural Self, Selves Plural, Multiplicity of Self
Category: Psychology & Mental Models
Tags: psychology, philosophy, identity, self-awareness, mental-models, decisions
Explanation
The 'multiple selves' family of theories holds that the intuitive sense of a single, continuous self is a useful fiction. In reality, a person at twenty and the same person at sixty share genes and memories but differ enormously in values, capacities, and concerns. A person at the start of a diet and the same person three hours later in front of a dessert can behave like two different agents. A person playing parent, professional, and friend can hold incompatible commitments without obvious contradiction.
Major traditions that share this view:
- **Behavioral economics**: Schelling, Ainslie, and others model self-control as bargaining or conflict between a planner-self and a doer-self, or between present and future selves. Phenomena like time-inconsistent preferences, present bias, and pre-commitment are intelligible once you allow multiple selves.
- **Personality psychology**: Theories of [[possible-selves]] (Markus & Nurius), [[self-discrepancy-theory]] (Higgins), and [[narrative-identity]] (McAdams) treat the self as plural.
- **Cognitive science**: [[society-of-mind]] (Minsky) and [[modularity-of-mind]] (Fodor) build minds from many specialized parts.
- **Therapy traditions**: [[internal-family-systems]] (Schwartz), psychosynthesis, and parts-work approaches operationalize multiple selves clinically.
- **Philosophy**: Derek Parfit's work on personal identity argues that the unity of a person over time is a matter of degree, not all-or-nothing.
- **Contemplative traditions**: Buddhist anatta (non-self) and many others have for millennia argued that the unified self is illusory.
Practical consequences:
- **Self-control as negotiation**: Treat decisions as deals between selves. The planner-self chooses commitments that bind the doer-self; the doer-self deserves systems that make virtue easy.
- **Communication across time**: Write to your future self ([[future-self-communication]]) because they are essentially someone else who needs your context.
- **Identity work**: When stuck, ask which self is being asked to do the work. Recasting the task as belonging to a different self ([[alter-ego-effect]], [[batman-effect]]) can unlock effort.
- **Compassion**: Past-selves made decisions with information and capacities you no longer have. Treat them as you would a younger friend, not a defendant.
Multiple Selves is less a single theory and more a stance: when behavior or motivation seems incoherent, the most fertile assumption is often that more than one self is in the room.
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