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Using the theory of the firm diagram, firms select a quantity such that Marginal Revenue (MR) is equal to Marginal cost (MC). Using the diagram, as shown, you draw a vertical line up from this intersection o...

One good way is to use the formula y - y 1 = m(x - x 1 )where (x 1 ,y 1 ) is a point on the line and m is the gradient of the line. This is derived from the definition of the gradient m=(y 2 -y 1 )/(x 2 -x 1...

This equation is an example of a quadratic equation, which is noticeable by the presence of the x 2 term on the left hand side. We begin to solve these types of equations by moving all the terms to one side ...

Token economies are a form of behaviour modification based on the principle of operant conditioning. Patients are given tokens for demonstrating good behaviours such as personal hygiene. These tokens act as ...

An advantage of conducting lab - based research is increased internal validity. This means that the psychologist can be more sure that they are measuring what they intended to measure. For example, if somebo...