| Sessions | Picture book |
| Pre-experiment | Grandpa Gray and Strawberry Thief |
| baseline | Pigs Can’t Fly, Rosie’s Walk, The Snowman, Moonlight, The Magical Black Bear, Alice the Fairy, A Day in Luxembourg Park, How Luck Is So Good Today |
| Intervention | Pigs Can’t Fly, Rosie’s Walk, The Snowman, Moonlight, The Magical Black Bear |
| Maintenance | Pigs Can’t Fly, Rosie’s Walk, The Snowman, Moonlight, The Magical Black Bear |
| Generalization | Alice the Fairy, A Day in Luxembourg Park, How Luck Is So Good Today |