Participants

Pre-test (20%)

Post-test (20%)

Participant 1

6

13

Participant 2

11

15

Participant 3

9

13

Participant 4

7

13

Participant 5

6

12

Participant 6

7

15

Participant 7

8

14

Participant 8

11

16

Participant 9

12

16

Participant 10

16

18

Participant 11

6

17

Participant 12

8

17

Participant 13

8

15

Participant 14

6

13

Participant 15

7

15

Participant 16

9

17

Participant 17

9

15

Participant 18

10

17

Participant 19

13

18

Participant 20

13

18

Participant 21

13

17

Participant 22

15

17

Participant 23

16

18

Participant 24

7

16

Participant 25

15

18

Participant 26

11

17

Participant 27

14

18

Participant 28

13

17

Participant 29

15

19

Participant 30

12

19