Idea units
(1) ______________ (In...) test the hypothesis that interpreters with more expertise are better at selecting the more important information to interpret than less expert individuals, each critical sentence was further divided into idea units, ranging in number from two to ten units per sentence. Two native speakers of English rated the importance of each idea unit and categorized the idea units as being either essential or secondary to the meaning of the critical sentence. The inter-rater reliability (Kappa) was 0.75. After discussing any discrepancy in judgment with the raters, the first author acted as the third and final judge on the importance of the idea units on which the two raters disagreed. The numbers of essential idea units were 34, 30 and 30 for each of the three texts respectively, and those of secondary idea units were 34, 34 and 30. Table 2 lists samples of critical sentences from each of the three texts used in the experiment with their essential and secondary idea units identified.