Exam 8: Introduction to Design

In research design notation,the letter X signifies a(n)_______________.

When some event other than the program occurs at the same time and affects the outcome of a study,there is a(n)____ threat.

_______________ is the only social interaction threat that primarily involves the people who help manage the research context rather than the participants themselves.

What social threat to internal validity occurs when the comparison group knows what the program group is getting,and instead of developing a rivalry,control group members become discouraged or angry and give up?

When a significant number of participants drop out,there is a(n)_______________ threat to internal validity.

In resentful demoralization,the comparison group knows what the program group is getting and develops a competitive attitude with the program group.

Narrative 8-1: The Reality Show  Two groups are competing on a television reality show to determine which can lose the most weight.Every week,the groups have a special competition to determine which group will get extra help,in the form of exercise training,dietary counseling,or other skills development. -The Green Team has won fourteen weeks in a row,and a production assistant from the television show feels absolutely awful about it.He begins to secretly pass the Blue Team the information being given to the Green Team,even providing them with exercise videos and special recipes.This is classified as ____.

What social threat to internal validity occurs because a comparison group learns about the program either directly or indirectly from program group participants?

Figure TB 8-2 N 0 X 0 N 0 0 -What type of design is shown in the accompanying figure?

The only way to address threats to internal validity is via random assignment.