Any events that occur between the pretest and posttest measures ...

[neverstopbelieb]

Any events that occur between the pretest and posttest measures are referred to as _____.
 
  a. distractions c. history
  b. dependent variables d. independent variables

Question 2

Confounded experiments _____.
 
  a. are desirable c. are easy to draw conclusions from
  b. are simple d. none of these

[briseldagonzales]

Answer to Question 1

C
This is the definition of history within the context of experiments.

Answer to Question 2

D
Confounded experiments have a design flaw in that some variable has not been properly controlled and co-varies with changes in the independent variable. This prevents the researcher from being able to draw conclusions at the end of the study.