Reliability, Validity, Practicability, Appropriateness of Methods

Reliability

Reliability refers to the consistency of your measurements. It’s about ensuring the method or tool produces the same results when applied in the same conditions or when used multiple times.
A high level of reliability in physical education often means that the tool or method chosen captures the true performance of an individual or team, without being influenced by temporary factors like fatigue or motivation.
To improve reliability, consider using standardised tests, which have set procedures and conditions, or repeat measures where the performance is measured multiple times and an average is taken.

Validity is about ensuring the data gathered actually represents the factor it is supposed to measure.
For example, a method is considered valid if it truly measures what it is intended to measure, for instance, a running test for stamina would not be valid for measuring balance.
The choice of tools, procedures, and measures should be accurate, relevant, and directly related to the factor impacting performance that is being investigated.
Always ask the question: Is what you’re measuring a true reflection of the performance or capability under investigation?

Practicability refers to the feasibility of the chosen method. Consider whether the resources, time, and equipment required to implement the method are available and practical.
A highly practical method is usually straightforward to administer, cost-effective, and doesn’t require excessive time or specialised equipment.
Always consider the context or conditions of the physical education setting when choosing a method.

Appropriateness is the suitability of the chosen method for the specific context, goals, and requirements of the performance investigation.
For example, an observation checklist might be appropriate for team sports performance in a real game setting, whereas physical fitness tests might be appropriate for individual athletes in a controlled setting.
Always link the chosen method to the specific needs, goals, and context of the investigation, considering also the age, skill level, and degree of seriousness of the performers involved.
When assessing appropriateness, also consider the factors of reliability, validity, and practicability - a method may be appropriate if it scores highly on these three factors.