From: An empirical study of claims and qualifiers in ESL students’ argumentative writing based on Toulmin model
Type
Patterns
Number
The average score of the corresponding composition
Type1
QW + C
22
11.09
Type2
QS + C
14
9.5
Type3
QS + QW + C
13
9.08
Type4
QW + C + QS
12
10.17
Type5
QS + QS + C
8
9.75
Type6
QW + C1 + C2
7
10.42