When we are concerned that because of media coverage of violence in schools that research participants' ideas and attitudes about the topic of gun control have changed between the time we first measured them and the second time we measured them after the treatment was administered,we are dealing with the threat to internal validity known as
A)selection bias.
B)history.
C)maturation.
D)testing effect.
E)mortality.

Question

Quizplus · Accepted Answer

History refers to external events or factors that may influence the participants' responses and is the most appropriate choice in this scenario since media coverage of violence in schools is an external factor that may affect the results of the study. Selection bias, maturation, testing effect, and mortality do not apply in this context.

When We Are Concerned That Because of Media Coverage of Violence