... are of the same age group i.e. 13 - 15 years, attend the same number of biology lessons of the same teacher and study the same topic and there are a balanced number of boys and girls i.e. equal number of boys and girls. Although the experimenter will try to control all the variables mentioned above in this paragraph, there might be some parameters present which could interfere with the results of this experiment, and these parameters are called the confounding variables. An example of a confounding variable encountered in this experiment could be: presence of noise by other students leading to low concentration of the participants. To conduct this particular experiment, the experimenter can combine three different methodologies as a process of triangulation and can carry out the experiment using these three research methods. The three methodologies the experiment could use are: 1. Experimental Method (Carry out an experiment) Conducting experiments ...

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