An experiment in which the independent variable really caused the change in the dependent variable ...

An experiment in which the independent variable really caused the change in the dependent variable is said to be high in _________ validity.
 
  a. internal
  b. external
  c. construct
  d. criterion

Question 2

An experiment in which extraneous variables are controlled is said to be
 
  a. internally reliable
  b. internally valid
  c. externally valid
  d. externally reliable

Question 3

The basic idea of validity is that conclusions based on research (are)
 
  a. statistically reliable
  b. free of experimenter bias
  c. correspond to the actual conditions of the world
  d. support the researchers hypothesis(es)

Question 4

In within-subjects designs (subject experiences all stimuli in one session) it is important
 
  a. not to have more than two or three stimuli
  b. to present at least seven stimuli, if possible
  c. to choose higher levels of the independent variable
  d. to focus on lower levels of the independent variable