common types of variables
independent and dependent variables
researchers who focus on casual relations usually begin with an effect, then search for its cause.
the cause is the independent variable.
the result or outcome is dependent variable.
lack of staff training-increase in customer dissatisfaction
success of new products-stock price
Moderating variables
has effect on the relationship of independent and dependent variables
the presence of a third variable(moderatingvar)modifies the original relationship between independent-dependent variables.
e.g. attractiveness-hiring outcome
-CV=Female
-Moderator=type of job
Mediating(intervening)variables
specify how and why a particular effect or relationship occurs.
mediators explain how external physical events take on internal psychological significance.
mediators describe the psychological process that occurs to create the relationship.
e.g.look at p.16 and 21 (consumer trust, value, and loyalty in.....)