short hair is better than long hair (or other way around)
We need more holidays
Children should be paid for doing chores
All students should wear uniforms
Age 12 is to young to babysit
You could use any of the following above, whether it's those ones exactly or the opposite of what they say. There are just some ideas to get you started, or help you making up your own
When a tone is sounded, a baby's right cheek is touched, and the baby reflexively turns its head to the direction of the touch. After several pairings, the baby turns its head to the right as soon as it hears the tone. In this example, the conditioned stimulus is the TONE.