If an experiment has _____, the researcher is confident that the ...

[segrsyd]

If an experiment has _____, the researcher is confident that the cause-effect conclusions reached are accurate.
 
  a. external validity c. statistical inference
  b. statistical frequency d. internal validity

Question 2

The extent to which the conclusions in an experiment are logical and justified because nothing was allowed to vary except the changes in the manipulated and measured variables is called _____.
 
  a. external reliability c. internal validity
  b. internal reliability d. external validity

[bobsmith]

Answer to Question 1

D
Internal validity makes researchers confident in the accuracy of their conclusions.

Answer to Question 2

C
This is the definition of internal validity

[segrsyd]

Thanks for the timely response, appreciate it

[billybob123]

YES! Correct, THANKS for helping me on my review