Angular momentum is the measure of effectiveness for a gyro stabilizer, analogous to horsepower ratings on a diesel engine or kilowatts on a generator.
While these standards are not all academic, the researchers maintain that academic results represent the single most important measure of effectiveness in the traditional school system.
In the following table, peak concentration refers to the amount of the drug in the blood, which is a reasonable, though imperfect, measure of effectiveness.
Based on this theory, self-esteem is a measure of effectiveness in social relations and interactions that monitors acceptance and/or rejection from others.