The materials required for the experiment:
- 5 cats
- A vacuum cleaner
- A stop watch
- A CD player
- 1 classical music CD
- 1 pop music CD
- 1 heavy metal CD
For this experiment, the independent variable is the type of music used. The dependent variable is the time it takes for cat to calm down. This is determined by using a stopwatch to time and observing the cats. The constants (control variables) are the use of vacuum cleaner to irritate the cat, the age of the cats and gender of the cats.
Permission is obtained from the cat owners to use their cats in the experiment for 4 days. The purpose the method of the experiment is also explained to them.
On the 1st day of experiment, the cats are kept outside the room where the experiment will be done. The cats are tagged numbers 1 to 5.
The 1st cat is brought into the room. Using the sound of the vacuum cleaner, the cat is made to become agitated and angry for 5 minutes. After that the vacuum cleaner is switched off and the stop watch started. The cats will normally be walking around and meowing when they are restless. The stopwatch will be stopped once the cat calms down and sits. The time is recorded down in the table below.
The procedure 4 is repeated using cats 2, 3, 4 and 5 and time taken for them to calm down is recorded in the table given below.
On the 2nd day procedures 4 and 5 are repeated. But after the cats have been made agitated and angry, the classical music was played and the time taken for the cats to calm down was timed and recorded in the table.
On the 3rd day procedures 4 and 5 is repeating using the pop music.
On the 4th day procedures 4 and 5 is repeated using the heavy metal music.