Every time someone flushes a toilet in the apartment building, the shower becomes very hot and causes the person to jump back. Over time, the person begins to jump back automatically after hearing the flush, before the water temperature changes.

Your father gives you a credit card at the end of your first year in college because you did so well. As a result, your grades continue to get better in your second year.

Your car has a red, flashing light that blinks annoyingly if you start the car without buckling the seat belt. You become less likely to start the car without buckling the seat belt.

An individual receives frequent injections of drugs, which are administered in a small examination room at a clinic. The drug itself causes increased heart rate but after several trips to the clinic, simply being in a small room causes an increased heart rate.

A professor has a policy of exempting students from the final exam if they maintain perfect attendance during the quarter. His students’ attendance increases dramatically.

Every child who participated in the wrestling match received a medal or trophy.  This made Kaide want to wrestle the next year.

When Christina was a child, her parents would drive her around in the car to get her to fall asleep because the motion of the car made her feel drowsy.  As an adult, Christina feels drowsy whenever she sits in a car, even when it is not moving.

A child tells a funny joke and his parents laugh.  This makes the child want to tell jokes in the future.

 In the past Fred had failed many math exams which caused him humiliation.  Now, Fred gets nervous and anxious whenever the teacher announces that they’re about to take a quiz.

Selena had an allergic reaction to a bowl of clam chowder that made her feel nauseous.  Now, she feels nauseous whenever she thinks about eating that soup.

Jade did not want her dog, Luna, to run out into the street so she invested in the electric fence.  Every time her dog would get near the invisible fence, it would get shocked which would scare the dog.  Before the dog would get to the fence, there would be a red light just before the shock.  Now, when Luna sees the red light she runs in the opposite direction.

Your partner broke up with you in a cafe. At the time 'You're so Vain' by  Carly Simone was playing on the radio in the background. Now every time you hear that song you feel sad. 

A teacher decides to give out negative points for wrong answers in a multi choice test. You are unsure of the answer to one of the questions, so you leave it blank.

You have a minor car accident and use your car insurance to repair the damage. The following month your car insurance increases in price.

You are thirsty and go into a shop to buy a drink. A sales rep is giving out free samples of an isotonic drink. You try it and decide to buy 3 as there is an offer of 3 for the price of 2.