The mechanism depends on the variant. In multi-agent RL and robotics, an observer agent perceives the behaviour or demonstrations of another (expert) agent and updates its own policy to reproduce them โ via imitation learning, behavioural cloning or rewards for following the expert; in the cultural-transmission approach this happens in real time and few-shot, without pre-collected human data. In the LLM variant, a teacher model encodes task knowledge as natural-language prompts or synthetic examples that a student model uses to learn the task, limiting memorisation of raw data. Across variants the shared core is a social signal channel (observation, demonstration or message) and an update rule that transfers the observed competence to the learner.
Solo reinforcement learning is sample-inefficient โ an agent must discover good behaviours by trial and error, which is slow and can be unsafe in the real world. Social learning shortens this process by letting an agent inherit knowledge already acquired by an expert or by other agents. In the LLM setting it additionally addresses transferring knowledge between models without sharing raw, potentially sensitive training data.
The learner copies the demonstrator's mistakes or biases; the learner's policy quality is bounded by the quality of the social source.
The agent reproduces irrelevant or incidental elements of the expert's behaviour rather than only the causally relevant steps.
In the LLM variant, synthetic examples or prompts may inadvertently reveal the teacher's raw training data.
Albert Bandura formalises learning through observation, imitation and modelling, including vicarious reinforcement โ the psychological foundation for later AI framings.
DeepMind's Cultural General Intelligence Team demonstrates agents that learn new tasks in real time by imitating an expert, without pre-collected training data.
A framework is proposed in which language models transfer knowledge to one another in natural language via prompts or synthetic examples, in a privacy-conscious manner.
