List Four Things That Can Decrease the Reliability of a Measure

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The Answer is There are several factors that can decrease the reliability of a measure. Here are four key things that can negatively impact the reliability of a measurement:

1. **Inconsistent Measurement Procedures**: If the method of measurement is not applied consistently across different instances, the reliability of the measure will be compromised. For example, if a survey is administered in varying conditions or if instructions are not standardized, the responses may not be comparable, leading to unreliable results.

2. **Poorly Designed Measurement Tools**: If the tools or instruments used to collect data are not well-designed, they can produce unreliable results. This includes poorly worded survey questions, ambiguous items on a test, or faulty equipment that gives inconsistent readings. The validity and precision of the measurement tool are crucial for reliable measurements.

3. **Rater or Observer Error**: Human error can play a significant role in the reliability of a measure. This can include mistakes made by observers, interviewers, or raters who are responsible for recording or interpreting the data. Bias, fatigue, lack of training, or inconsistent application of criteria can all lead to unreliable measurements.

4. **Participant Variability**: The characteristics or state of the participants being measured can also affect reliability. If participants are not consistent in their performance, or if their behavior or responses change over time due to factors such as fatigue, boredom, or learning effects, this can lead to unreliable measures. It's important to control for participant variability as much as possible to ensure consistent results.

To improve the reliability of a measure, it is important to address these issues by standardizing procedures, ensuring high-quality measurement tools, training observers or raters effectively, and controlling for participant variability. Regularly assessing and refining the measurement process can help maintain a high level of reliability.

List Four Things That Can Decrease the Reliability of a Measure

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