Table 1. Descriptive statistics of the outcome and self confidence scores.

Group & Difficulty	Measure		Performance outcome			Self confidence scores
			M	SD	Range	M	SD	Range
Group A Correction Cue
Forehand Clear	Pretest		31.93	3.23	30-35	5.48	0.54	4-6
	Posttest		37.81	1.27	35-40	8.64	0.69	5-9
	Retention		37.50	1.03	34-39	8.33	0.72	6-9
Backhand Clear	Pretest		16.75	1.34	14-18	5.09	0.88	3-7
	Posttest		23.06	1.12	20-25	5.65	0.74	3-7
	Retention		22.50	1.09	20-25	5.63	0.71	3-7
Group B Error Cue
Forehand Clear	Pretest		32.75	2.69	29-34	5.60	0.73	4-6
	Posttest		38.18	0.98	35-38	6.20	0.43	4-7
	Retention		37.56	1.09	34-38	6.15	0.41	4-8
Backhand Clear	Pretest		15.90	1.02	13-17	4.81	0.59	3-7
	Posttest		21.85	1.16	19-25	5.14	0.57	3-8
	Retention		21.31	2.02	19-24	5.05	0.51	3-8
Group C Error + Correction Cue
Forehand Clear	Pretest		30.50	1.21	27-34	4.93	0.69	3-8
	Posttest		34.37	0.71	29-37	8.65	0.52	6-9
	Retention		34.00	0.89	30-37	8.49	0.56	5-9
Backhand Clear	Pretest		16.00	1.31	14-18	4.88	0.63	3-6
	Posttest		27.50	1.71	24-29	7.59	0.65	4-9
	Retention		26.75	2.08	25-29	7.50	0.61	4-9
Group D Control Group
Forehand Clear	Pretest		32.10	1.32	28-33	5.32	0.58	4-6
	Posttest		32.50	0.84	29-34	5.44	0.64	4-7
	Retention		32.43	1.06	29-33	5.38	0.49	4-6
Backhand Clear	Pretest		16.55	1.46	13-17	4.93	0.61	3-6
	Posttest		16.80	1.82	13-18	5.06	0.67	3-7
	Retention		16.69	1.33	14-18	4.98	0.59	3-6