Pragmatic language impairment – the child speaks in fluent and well-formed utterances with adequate articulation; content of language is unusual; comprehension may be over-literal and language use is odd. The child may chatter incessantly and be poor at turn-taking in conversation and maintaining a topic. There has been a great deal of controversy about this category, which is termed "pragmatic language impairment (PLI)" in the UK. Debate has centred over the question of whether it is a subtype of SLI, part of the autistic spectrum, or a separate condition. In DSM-5, the term "Social Communication Disorder" has been introduced; this is equivalent to PLI.