Reference chains are sequences of referring expressions that track an entity through a text, maintaining the reader's awareness of who or what is being discussed. They are a primary mechanism of textual Cohesion and a key area of L2 writing difficulty.
A reference chain introduces an entity and then refers back (or forward) to it using different linguistic forms:
A young doctor arrived at the clinic. She examined the patient carefully. The physician then prescribed medication. Dr Nguyen signed the prescription and left.
The chain a young doctor → she → the physician → Dr Nguyen tracks a single entity through four sentences. Each link in the chain must be recoverable: the reader must be able to identify that all four expressions refer to the same person.
Halliday and Hasan (1976) identified reference as one of five cohesive devices (alongside substitution, ellipsis, conjunction, and lexical cohesion). They distinguished:
Reference chains operate primarily through anaphoric reference, building identity chains where all links refer to the same entity.
| Expression type | Example | Function in chain |
|---|---|---|
| Full noun phrase | a young doctor | Introduces or reintroduces an entity |
| Pronoun | she, it, they | Maintains reference when identity is clear |
| Definite NP | the doctor | Re-identifies with shared knowledge |
| Demonstrative | this approach | Points back with evaluative force |
| Proper noun | Dr Nguyen | Specifies unique identity |
| Zero anaphora | (Ø) then left | Ellipsis of subject in coordinate clauses |
Skilled writers vary referring expressions to avoid monotonous repetition while maintaining clarity. The choice between pronoun, full NP, and synonym depends on distance from the last mention, number of competing referents, and discourse prominence.
Identity chains carry the main topic thread; similarity chains build the lexical field.
Reference chains are a common area of error for L2 writers:
Teaching reference chains explicitly through text analysis, guided rewriting, and focused editing improves both cohesion and readability in L2 writing.