Www. notesolution. com of an individual"s behaviour during the course of clinical treatment or diagnosis. Most likely does not remain in the background. Is ethically constrained to engage in activities designed to benefit the patient. In some cases, psychologists do interfere with a situation in a natural or clinical setting. E. g. survey study: a study of people"s responses to standardized questions. Variables: anything vary in value (differ in amount). Manipulate: setting the values of an independent variable in an experiment to see whether the value of another variable is affected. Experimental group: a group of participants in an experiment, the members of which are exposed to a particular value of the independent variable which as been manipulated by the researcher. Control group: comparison group used in an experiment, the members of which are exposed to the naturally occurring or zero value of the independent variable. Independent variable: variable that"s manipulated in an experiment as a means of determining cause-and-effect relations.