The systematic observation about a certain problem under controlled laboratory conditions is called an experiment. For example, Albert Bandura conducted experiment to investigate if social behaviours i.e., aggression can be acquired by observation and imitation. 

The steps involved in an experiment are:

1. identifying the problem 

2. formulation a hypothesis 

3. selecting an experimental design 

4. conducting the experiment and data collection 

5. data analysis 

6. drawing conclusions

The key terms of experimental method with examples are:

1. Problem: To study the effect of music on the level of blood Pressure. 

2. Hypothesis: The music will help in regulating the level of blood pressure. 

3. Independent variable: Music. 

4. Dependent variable: Level of blood pressure.

5. Intervening variables: Age, gender, all other sounds other than music, etc. 

6. Experimenter : A person who will be conducting this experiment. (May be you or your psychology teacher.) 

7. Participant : A person on whom this experiment will be conducted. (May be your family member/ friend.)

The two variables in an experiment are: 

1. Independent Variable (I.V.) – It is the variable that the experimenter manipulates or changes systematically to study it’s effect on the D.V. (Cause). 

2. Dependent Variable (D.V.) – the variable that may change due to manipulation of the I.V. (effect). 

The features of the method are: 

1. it is the most objective and scientific method of studying behaviour

2. it helps to establish cause-effect relationship between two or more variables 

3. the findings of an experiment are verifiable

The limitations of the method are: 

1. it may not be possible to control all intervening variables 

2. it has a limited scope, i.e., there may be ethical constraints or risk factors 

3. experimenter’s expectations or participant attitude may influence the conclusions