Investigate the effect of performance training on hand-eye coordination in 11-year-old girls.

let's solve this investigation question.

2.5.1 Identify:

• a) Independent variable: Performance training
• b) Dependent variable: Average number of successful ball catches in 30 seconds

2.5.2
The girls participated in a training programme for six weeks, with training sessions held twice a week.
Number of training sessions = 6 weeks $\times$ 2 sessions/week = 12 sessions.

2.5.3
The purpose of the ball catch test was to measure their hand-eye coordination.

2.5.4
Three ways in which the validity of the investigation was ensured:

• All participants were the same age (11 years old).
• The distance from the wall was kept constant (2 m).
• The time for catching was consistent (30 seconds).

2.5.5
One way in which the reliability of the investigation can be improved is to increase the number of participants in the study.

2.5.6
The results show that for all participants (A, B, C, D, and E), the average number of successful ball catches increased after the training programme. This indicates an improvement in their hand-eye coordination.

2.5.7
The conclusion for this investigation is that performance training improves hand-eye coordination.