Instrumental
Language is used to fulfil a particular need.
Regulatory
Language is used to influence others behaviour.
Interactional.
Language is used to develop social relationships and ease the process of interaction.
Personal.
Language is used to express ideas, opinions and individual identity.
Representational.
Language used to convey facts and information.
Heuristic.
Language is used to learn and explore the environment.
Imaginative.
Language is used to create and imaginary environment. May accompany play.