Abstract: A behavior modification device and system to allow parents, caregivers and educators to change unwanted and/or undesirable behavior in children. The device consists of a cardboard, plastic or wooden base panel with one or more removable cardboard, plastic or wooden cards. The cards are double-sided. The cards serve as extrinsic secondary reinforcers or punishers. One side displays a positive reinforcer, such as a ‘happy face’ or ‘smiley’. The other side displays a punisher, such as a ‘sad face’ or ‘frown’. The cards will be secured to the base panel with suitable attachment means. The base panel will also be equipped with velcro or magnetic attachments to mount in an easy-to-see area. The position of the cards will provide a visual cue of how well a child is performing a desired behavior. At the end of a predetermined period of time, this simple device can be used to determine if a child is eligible to receive a reward.