title 'Effects of delay in oral practice, second language learning';
*--------------------------------------------------------------
*       grp 1 = 4 week delay (exptl grp)
*       grp 2 = 0 delay (control grp)
*--------------------------------------------------------------;
data oral;
    input subjno grp listen speak read write;
    length group $ 8;
    if grp=1 then group='EXPTL';
    if grp=2 then group='CONTROL';
    drop grp;
cards;
 1 1 34 66 39 97
 2 1 35 60 39 95
 3 1 32 57 39 94
 4 1 29 53 39 97
 5 1 37 58 40 96
 6 1 35 57 34 90
 7 1 34 51 37 84
 8 1 25 42 37 80
 9 1 29 52 37 85
10 1 25 47 37 94
11 1 34 55 35 88
12 1 24 42 35 88
13 1 25 59 32 82
14 1 34 57 35 89
15 1 35 57 39 97
16 1 29 41 36 82
17 1 25 44 30 65
18 1 28 51 39 96
19 1 25 42 38 86
20 1 30 43 38 91
21 1 27 50 39 96
22 1 25 46 38 85
23 1 22 33 27 72
24 1 19 30 35 77
25 1 26 45 37 90
26 1 27 38 33 77
27 1 30 36 22 62
28 1 36 50 39 92
 1 2 33 56 36 81
 2 2 21 39 33 74
 3 2 29 47 35 89
 4 2 22 42 34 85
 5 2 39 61 40 97
 6 2 34 58 38 94
 7 2 29 38 34 76
 8 2 21 42 38 83
 9 2 18 35 28 58
10 2 36 51 36 83
11 2 25 45 36 67
12 2 33 43 36 86
13 2 29 50 37 94
14 2 30 50 34 84
15 2 34 49 38 94
16 2 30 42 34 77
17 2 25 47 36 66
13 2 32 37 38 88
19 2 22 44 22 85
20 2 30 35 35 77
21 2 34 45 38 95
22 2 31 50 37 96
23 2 21 36 19 43
24 2 26 42 33 73
25 2 30 49 36 88
26 2 23 37 36 82
27 2 21 43 30 85
28 2 30 45 34 70
;