Research Experiment


The research experiment will include a comparison of two groups on asingle outcome measure. The objective is to test the hypothesisconcerning causation. Hypothesis regards to a suggestedrationalization for a happening (Srinagesh,2006). For instance,the psychologist is interested in determining the effectiveness of anew medication on depression. Hence, the psychologist will randomlydivide a group of study participants in two groups, which refers torandom assignment, described as an experiment method of groupingparticipants to different groups prior to conducting an experiment(Srinagesh,2006). One groupbecomes the experimental group, which has the new medicationadministered to them. Second, is the control group that gets aplacebo medication meaning medication comprising of a substance thatcauses no harm, like sugar containing no physiological impacts.

At this stage, it is necessary to use an independent variable, whichis the changeable values (Srinagesh,2006). For instance,the amount of new medication administered to the groups. Also aredependent variables, the values arising from independent variables,in this case the effectiveness of the new medication. The groups getdifferent medication, but the treatment happens in the similar mannerin order for the experiment to make an isolation of the newmedication. Following administering of the medications, thepsychologist makes a comparison of the groups to determine if the newmedication has an effect in treating depression from the experimentalgroup participants. Supposing the research is well designed, if therewas a positive effect in treating depression for individuals in theexperimental group compared to those in the control group, thepsychologist might suppose the new medication is effective in thetreatment of depression.

The psychologist must follow ethical guidelines, which are rulesinvolved in conducting research (Srinagesh,2006). For instance,ensuring that the participants included in the study have informedconsent, meaning they are conscious of the reasons for the researchand the expected effects prior to commencing with the research.


Srinagesh, K. (2006).&nbspTheprinciples of experimental research.Amsterdam: Elsevier/Butterworth-Heinemann.