This job explains experiments.

For each experiment below, this posting identifies the four components of an experiment, as listed below.  
Possible answers:
(Choose an answer from one of the following.  There is only one correct answer for each blank.)
Independent Variable
Dependent Variable
Experimental Group
Control Group

1. An industrial/organizational psychologist develops a new training program to improve clerks' courtesy towards customers in a chain of retail stores.  She conducts an experiment to see if the training program leads to a reduction in the number of customer complaints.  

The training program is the _____________________________ variable.
The number of customer complaints is the _________________ variable.
The group that receives the training is the ___________________ group.
The group that does not receive the training is the _____________ group.


2. A researcher is interested in how heart rate and blood pressure are affected by viewing a violent film sequence as opposed to a non-violent film.  He conducts an experiment to investigate the relationship.

Heart rate and blood pressure are the __________________ variables.
The type of film watched is the _________________________ variable.
The group that views a violent film is the ___________________ group.
The group that watches a nonviolent film is the ______________ group.


3. A researcher uses an experiment to test his theory that both high stimulus complexity and high stimulus contrast increase infants' attention to stimuli.

High stimulus complexity and high stimulus contrast are the                              
            ______________ variables.
How long infants stare at the stimulus is the ________________ variable.
The group is exposed to normal or low complexity/contrast stimuli is the         ______________ group.
The group that is exposed to high complexity and high contrast stimuli is        the ___________________ group.


4. A military psychologist wants to know if sleep deprivation influences memory.  She uses an experiment to answer her question.
Sleep deprivation is the _____________________________ variable.
Memory is the _____________________________________ variable.
The group that is sleep deprived is the ___________________ group.
The group is not sleep deprived is the ____________________ group.