Although you may spend the evening surfing the internet rather than studying, you have generally been quite a disciplined student throughout your academic career and have always held the attitude that studying is important. the relationship between your studying behavior and your attitude toward studying can best be described by which social psychological term?

The relationship between your studying behavior and your attitude toward studying (attitude that studying is important) can best be described by the Principle of aggregation. This social psychological term states that the sum of a set of multiple measurements is a more  stable and representative estimator than any single measurement.  Spending the evening surfing the internet rather than studying is one case and it is supresses by the other situations in which you were studying, which are more.