M27 - Schedules of Reinforcement

Playing bingo

• Fixed-Ratio

• Fixed Interval

• Variable Ratio

• Variable Interval

A berry picker receives $1 after filling 3 pint boxes

• Fixed-Ratio

• Fixed Interval

• Variable Ratio

• Variable Interval

A teenager receives allowance every Sunday

• Fixed-Ratio

• Fixed Interval

• Variable Ratio

• Variable Interval

Playing a slot machine

• Fixed-Ratio

• Fixed Interval

• Variable Ratio

• Variable Interval

Sales commission – you have to talk to many customers before you make a sale, and you never know whether the next one will buy.

• Fixed-Ratio

• Fixed Interval

• Variable Ratio

• Variable Interval

You are still fishing from a dock. You sit with your line in the water and wait for the fish to strike. Sometimes it takes only 20 minutes, and sometimes it takes an hour or more.

• Fixed-Ratio

• Fixed Interval

• Variable Ratio

• Variable Interval

A professional baseball player gets a hit approximately every third time at bat

• Fixed-Ratio

• Fixed Interval

• Variable Ratio

• Variable Interval

Someone watches and sees shooting stars on a dark night

• Fixed-Ratio

• Fixed Interval

• Variable Ratio

• Variable Interval

A charitable organization gets a donation for about every ten phone calls it makes.

• Fixed-Ratio

• Fixed Interval

• Variable Ratio

• Variable Interval

Every 6 months I have to go to the dentist to get a check up

• Fixed-Ratio

• Fixed Interval

• Variable Ratio

• Variable Interval