"I Say Yes! I Say No! is told entirely in simple dialogue between parents and children. It features familiar nighttime and bedtime rituals"--

Simple text and illustrations portray a small dog waking up, having breakfast, and getting ready to play.

It's nighttime and everybody--children, parents, and pets--says good night. But when all the lights are out, find out where Charlie wants to sleep.

By the time a young boy finishes saying good morning to everything in sight, it is time to say good night.

Unwilling to go to bed, Harry gets to stay up all night, but he discovers that staying awake all night in a quiet lonely house is not quite the treat he imagined it would be.

A young girl discovers how much she has in common with her grandmother as they both get ready for bed.

Sleepy Dog thinks of many excuses why he cannot go to sleep at bedtime, but finally he does become sleepy enough to slip into slumber.

"A small boy says 'Good night!' to everyone and everything in sight. By the time he is done with his exhaustive list of 'good nights,' he is asleep himself!"--

When their outdoor sleepover is interrupted, Bear and his friends prepare for bed in a cabin, saying goodnight to a catalog of things, including Bear's beloved underwear.