CHES Evaluation and Research Methods 3

Question 1

When conducting a focus group for health program evaluation, the ideal group size is typically:

Accepted Answer

6–10 participants

Answer

Groups of 6–10 participants allow enough diversity of opinion while still enabling meaningful group discussion.

Question 2

A CHES professional observes a significant difference in test scores (p = 0.03). What does this p-value indicate?

Accepted Answer

There is a 3% probability of obtaining these results if the null hypothesis is true

Answer

A p-value of 0.03 means there is a 3% probability that the observed difference occurred by chance if the null hypothesis were true.

Question 3

Which ethical principle requires that research participants understand the nature of the study before agreeing to participate?

Accepted Answer

Informed consent

Answer

Informed consent ensures participants are fully informed about study procedures, risks, and their right to withdraw before agreeing to participate.

Question 4

Construct validity refers to the extent to which an instrument:

Accepted Answer

Accurately measures the theoretical concept it is designed to measure

Answer

Construct validity assesses whether a measurement tool truly captures the underlying theoretical construct it represents.

Question 5

In the CDC evaluation framework, 'stakeholder engagement' is emphasized because:

Accepted Answer

It ensures that evaluation findings are used and meet the needs of those involved

Answer

Engaging stakeholders ensures the evaluation is relevant, credible, and that findings will be acted upon by those with a stake in the program.

CHES - Certified Health Education Specialist Practice Test