Chapter 2: To Study Something You Need To:

Question 1

Define the property:

Answer 1

Define a property in measurable terms.

Question 2

Detect the property:

Answer 2

Use a device that can detect that property (can measure it in its chosen measurable terms).

Question 3

A good measurement has: Power:

Answer 3

The detector’s ability to detect the presence of differences in the magnitude of the property.

Sensitivity to small changes.

Question 4

A good measurement has: Reliability

Answer 4

The detector’s ability to see the sameness in the property (to see the absence of changes).

Measuring the tendency for the property to have the same results consistently.

Question 5

A good measurement has: Validity