| CK_a | Initial of the child |
| CK_b | Field Worker code |
| CK_c | Date of Interview (DD/MM/YY) |
| CK_d | Age of Child (in month) |
| CK_1 | When does a child's brain begin to develop and learn ? |
| CK_2 | When do children begin to see? |
| CK_3 | When do children begin to follow a moving person or toy, with their eyes? |
| CK_4 | When do children begin to vocalize in response to someone talking to them? |
| CK_5 | When do children begin to smile socially, that is smile into the face of another person? |
| CK_6 | When do children begin to say single meaningful words? |
| CK_7 | When do children begin to play imaginary play like feeding a doll or driving a toy car? |
| CK_8 | When do children begin to reach for a toy in front of them? |
| CK_9 | When do children begin to grasp tiny things like raisins, with their fingertips? |
| CK_10 | When do children begin to walk alone with good co- ordination? |
| CK_11 | When should mothers begin to talk to children? |
| CK_12 | When should mothers begin to show colorful objects to children to help them practice reaching? |
| CK_13 | When should mothers begin to teach children to count? |
| CK_14 | When should mothers begin to teach children colors? |
| CK_15 | When should mothers start to give children a spoon or a fork to let them eat by themselves? |
| CK_16 | When should mothers begin to give children paper and crayons to draw and color? |
| CK_17 | When should mothers begin to let children sit with support? |
| CK_18 | When should mothers begin to give children clean and safe objects or toys which they can mouth? |
| CK_19 | When should mothers begin to look at children’s books with their children? |
| CK_20 | When should mothers begin to give children clean and safe household items to play with? |
| CK_21 | In the past 3 days, did you or any household member over 15 years of age engage in any of the following activities with CHILD (name): If yes, ask: who engaged in this activity with CHILD (name)? Mother=1, Father=2, Other=3, No=4 |
| CK_21_a | Read books to or looked at picture books with CHILD (name)? |
| CK_21_b | Told stories to CHILD (name)? |
| CK_21_c | Sang songs to CHILD (name) or with (name),including lullabies? |
| CK_21_d | Took CHILD (name) outside the home, compound, yard or enclosure? |
| CK_21_e | Played with CHILD (name)? |
| CK_21_f | Named, counted, or drew things to or with CHILD (name)? |