Directions: Decide whether the following statements are true (T) or false (F) according to the text.( ) 1 Jokes could make people relaxed, so they can boost their health.( ) 2 The Sincerity group wasn't given any instructions except that they were selected for a study.( ) 3 There are many significant distinctions between the two groups.( ) 4 People in the Sincerity group were asked to tell nothing but the truth.( ) 5 In the end of the study, the Sincerity group reported less physical health problems but more mental problems.( ) 6 It takes five weeks to see results because it takes time for people to regain the virtue of honesty.( ) 7 Kelly has also been following the instructions of telling the truth and her health has been improved.( ) 8 The study's methodology is not simple, so it can only be conducted by scientists.