Chapter 2: Kinds of Experiments

Question 1

Experimentation:

Answer 1

A technique for understanding the causal relationship between variables.

Question 2

Internal validity of experiments:

Answer 2

Establishes that a causal relationship between two variables is likely [in that specific environment/ in those participants that were studied] by following these techniques: manipulation, random assignment, measuring values [dependent variable], and comparing data of both conditions.

Question 3

External validity of experiments:

Answer 3

External validity are variables that are operationally defined as they are in the real world, so that they are representative of the real world.

Thus, the study is helping us to understand the real world.