Is It available for observing the specified behavior or event?
To what extent are the desired behavior repetitious and frequently observed?
What degree of directness and structured should be associated with observing the behavior or events?
How aware should the subject be that they and their behavior should be observed
Are the observable events complex enough to require the use of a mechanical device for observing the behavior
Types pf variables used in experimental Designs
Independent variable The independent variable is assumed to the causal factor of a functional relation ship with a dependent variable
Dependent variable a singular observable attribute or element that is the measured outcome or effect change on a specified test subject hat is derived from manipulating the independent variable measured -Control variable
Control Variable Variables that the researcher controls so that they don’ t affect the functional relationship between the impendent and dependent variable of the experiment
Extraneous variable Uncontrollable variables that should average out over a series of experiment, if not accounted for they can have a confounding impact on the dependent variable measures
When the researcher wishes to observe or measure al customer reactions to a product display in a single store
One group Pre test Post test
It is taken a pretest criterion measure of ad recall, product environment , media habits or purchase history the a experimental independent treatment measure is delivered( TV commercial) followed by a post test measure of the dependent variable
Static group comparison
Many studies look at a two sore settings of heavy users versus light users when comparing new produtcs sales