Volunteers for a research study could introduce bias because
a. they are less likely to show change than subjects who are required to participate.
b. they may be different from nonvolunteers on important variables.
c. they are more subject to the Hawthorne effect than nonvolunteers.
d. Al of these are true.
B
You might also like to view...
Chomsky proposed that in order to understand syntax one must consider interrelationships among phrases within sentences as well as ____
a. syntactical relationships between sentences b. semantic relationships among phrases within sentences c. conceptual relationships between sentences d. systematically-biased relationships in the passage
The essential feature of oppositional defiant disorder (ODD) is a recurrent pattern of defiant, disobedient, negativistic, and hostile behavior toward peers
Indicate whether this statement is true or false.
When testing several categorical variables, which is the appropriate test of relationship?
A. Chi-square B. Elaborated chi-square C. Part correlation D. Log-linear analysis
What are the 3 major things the teacher does in preparing for story reading?
What will be an ideal response?