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Table 1. 

Examples of Disjunctive (Fully-deductive and Implicated-premise) and Control Stories (Translated from French)

Story TypeExample
Disjunctive (Fully-deductive) Xavier wants to surprise Claire by inviting her out to a restaurant. 
He hesitates between these three days of the week: 
Thursday, Friday or Saturday. 
Claire cannot go on Thursday because she has a theater class. 
Also, Saturday would not work because he is having dinner with his parents. 
He said: “I'll invite her out for Friday.” 
He hopes she will be available that day. 
Comprehension question: In your opinion, does Xavier want to surprise Claire? 
Justification question: In your opinion, is Xavier justified to think that he must invite Claire on Friday? 
Disjunctive (Implicated-premise) Xavier wants to surprise Claire by inviting her out to a restaurant. 
He hesitates between these three days of the week: 
Thursday, Friday or Saturday. 
Claire cannot go on Thursday because she has a theater class. 
Also, Thursday would not work because he is having dinner with his parents. 
He said: “I'll invite her out for Friday.” 
He hopes she will be available that day. 
Comprehension question: In your opinion, does Xavier want to surprise Claire? 
Justification question: In your opinion, is Xavier justified to think that he must invite Claire on Friday? 
Control Alex comes back home after his soccer practice. 
He is very tired tonight and decides to relax. 
He is looking for something to do and turns on the TV. 
Unfortunately the TV is still broken. 
Instead, he chooses to read a comic book in his room. 
After a few minutes, he falls asleep. 
Alex needs a good rest to be ready for tomorrow. 
Comprehension question: In your opinion, is Alex tired? 
Story TypeExample
Disjunctive (Fully-deductive) Xavier wants to surprise Claire by inviting her out to a restaurant. 
He hesitates between these three days of the week: 
Thursday, Friday or Saturday. 
Claire cannot go on Thursday because she has a theater class. 
Also, Saturday would not work because he is having dinner with his parents. 
He said: “I'll invite her out for Friday.” 
He hopes she will be available that day. 
Comprehension question: In your opinion, does Xavier want to surprise Claire? 
Justification question: In your opinion, is Xavier justified to think that he must invite Claire on Friday? 
Disjunctive (Implicated-premise) Xavier wants to surprise Claire by inviting her out to a restaurant. 
He hesitates between these three days of the week: 
Thursday, Friday or Saturday. 
Claire cannot go on Thursday because she has a theater class. 
Also, Thursday would not work because he is having dinner with his parents. 
He said: “I'll invite her out for Friday.” 
He hopes she will be available that day. 
Comprehension question: In your opinion, does Xavier want to surprise Claire? 
Justification question: In your opinion, is Xavier justified to think that he must invite Claire on Friday? 
Control Alex comes back home after his soccer practice. 
He is very tired tonight and decides to relax. 
He is looking for something to do and turns on the TV. 
Unfortunately the TV is still broken. 
Instead, he chooses to read a comic book in his room. 
After a few minutes, he falls asleep. 
Alex needs a good rest to be ready for tomorrow. 
Comprehension question: In your opinion, is Alex tired? 

All Control stories were followed by a comprehension question. Two thirds of the Disjunctive stories were followed by a comprehension question and one third by a justification question (see text).

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