s 4 Witnesses eligible for assistance on grounds of age or incapacity
(1) For the purposes of this Part a witness in criminal proceedings (other than the accused) is eligible for assistance by virtue of this Article— (a) if under the age of 18 at the time of the hearing; or (b) if the court considers that the quality of evidence given by the witness is likely to be diminished by reason of any circumstances falling within paragraph (2). (2) The circumstances falling within this paragraph are— (a) that the witness— (i) suffers from mental disorder within the meaning of the Mental Health (Northern Ireland) Order 1986, or (ii) otherwise has a significant impairment of intelligence and social functioning; (b) that the witness has a physical disability or is suffering from a physical disorder. (3) In paragraph (1)(a) “the time of the hearing”, in relation to a witness, means the time when it falls to the court to make a determination for the purposes of Article 7(2) in relation to the witness. (4) In determining whether a witness falls within paragraph (1)(b) the court must consider any views expressed by the witness. (5) In this Part references to the quality of a witness's evidence are to its quality in terms of completeness, coherence and accuracy; and for this purpose “coherence” refers to a witness's ability in giving evidence to give answers which address the questions put to the witness and can be understood both individually and collectively.