Another antecedent cue - this one reminding Eric to buy razors before his last one goes dull. This is an example of a transitive conditioned motivating operation (CMO-T). Eric is now in need of razors and will go on-line and order them. The four-term contingency looks something like this:
Motivating operation: Reminder sign at the bottom of the razor case
Discriminative stimulus: computer/website where Eric orders his razors from
Behaviour: Eric orders razors on-line
Consequence: Eric is given notice that his order has been processed and his razors will be arriving shortly (positive reinforcement)
Many product manufacturers have adopted this form of environmental control cuing its consumers to purchase more of an item. What examples have you noticed?