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3
DATA AND METHODOLOGY ...................................................................... 39
3.1
C
ORPUS COLLECTION
................................................................................ 39
3.2
D
ATA TRANSCRIPTION
............................................................................... 41
3.3
C
ORPUS DESCRIPTION
.............................................................................. 43
3.4
D
ATABASE
............................................................................................... 46
3.4.1
Source speeches: types of difficulties ................................................. 46
3.4.2
Student interpretations: taxonomy of rendition types .......................... 51
4
RESULTS AND DISCUSSION...................................................................... 55
4.1
G
LOBAL FEATURES
................................................................................... 55
4.1.1
Delivery rate ....................................................................................... 56
4.1.2
Lexical density .................................................................................... 59
4.1.3
Expansion rate .................................................................................... 64
4.1.4
Interim conclusion ............................................................................... 66
4.2
D
ATA ANALYSIS
........................................................................................ 69
4.2.1
Introduction ......................................................................................... 69
4.2.2
Quantitative analysis........................................................................... 69
 
4.2.2.1. Complex noun phrases……………………………………………….70 
4.2.2.2. Single-word terms……………………………………………………..78 

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Table of contents 
 
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4.2.2.3. Numbers………………………………………………………………..79 
4.2.2.4. Proper names………………………………………………………….81 
4.2.2.5. Interim conclusion……………………………………………………..83 
4.2.3
Longitudinal analysis .......................................................................... 86
4.2.4
Case study: zero renditions ................................................................ 89