CRC Research Methods 5

Question 1

A counselor researcher uses a snowball sampling strategy. The primary limitation of this approach is:

Accepted Answer

Participants are likely to refer others with similar characteristics, reducing diversity

Answer

Snowball sampling relies on referral chains, which tend to produce homogeneous samples and limit generalizability.

Question 2

The standard error of the mean (SEM) decreases when:

Accepted Answer

The sample size increases

Answer

SEM equals the standard deviation divided by the square root of n, so larger samples yield smaller standard errors.

Question 3

Grounded theory as a qualitative research method aims to:

Accepted Answer

Generate theory from systematically collected and analyzed data

Answer

Grounded theory inductively builds theory through iterative data collection and constant comparative analysis.

Question 4

When evaluating a research instrument's reliability using the split-half method, which coefficient is typically used to correct for test length?

Accepted Answer

Spearman-Brown formula

Answer

The Spearman-Brown prophecy formula corrects the split-half reliability estimate upward to account for the full test length.

Question 5

In a study comparing three or more group means simultaneously, the most appropriate parametric test is:

Accepted Answer

One-way ANOVA

Answer

One-way ANOVA tests for differences among three or more group means while controlling the family-wise error rate.

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