Table 2.
Comparisons of all outcome group means and skills for three measurement periods.
Group & Difficulty
Group
*
M
diff
p
†
Pretest
Forehand Clear
1
2
-.82
.68
1
3
1.43
.31
1
4
-.17
.54
2
3
2.25
.25
2
4
.65
.62
3
4
-1.60
.30
Backhand Clear
1
2
.85
.61
1
3
.75
.70
1
4
.20
.79
2
3
-.10
.83
2
4
-.65
.64
3
4
-.55
.66
Posttest
Forehand Clear
1
2
-.37
.77
1
3
3.44
*
.012
1
4
5.31
*
.000
2
3
3.81
*
.010
2
4
5.68
*
.000
3
4
1.87
.13
Backhand Clear
1
2
1.21
.43
1
3
-4.44
*
.006
1
4
6.26
*
.000
2
3
-5.65
*
.001
2
4
5.05
*
.001
3
4
10.7
*
.000
Retention
Forehand Clear
1
2
-0.06
.82
1
3
3.50
*
.014
1
4
5.07
*
.001
2
3
3.56
*
.011
2
4
5.13
*
.001
3
4
1.57
.46
Backhand Clear
1
2
1.19
.57
1
3
-4.25
*
.008
1
4
5.81
*
.006
2
3
-5.44
*
.004
2
4
4.62
*
.007
3
4
10.06
*
.000
Abbreviations: = positive feedback and correct cues; = error cues; = positive feedback, correct and error cues; = control group. = significant mean difference, p<.05. = bonferroni correction.