Table 4.

Table of items in IYCD prototype removed and reasons why.

Domain	Item Number from Prototype 1 *	Item Wording	Reason for Removal
Motor	FIN1	Does your child look at your face with interest and attention?	Same age attainment as adjoining items and slightly confusing when translating and back translating.
	FIN24A	Does your child write the first letter of his/her name?	(This item was added in phase I/II.) Item age attainment too advanced for 0- to 36-month children.
	GRO2	When you hold your child in a sitting position, does he/she hold his head steady?	Same age attainment as adjoining items, therefore no need for this item
	GRO3	When pulling your child from lying down on his or her back to sitting, does your child hold his/her head steady?	Same age attainment as adjoining items, therefore no need for this item.
	GRO20N	Does your child walk backwards, two or more steps WITHOUT any support?	Same age attainment to adjoining item; “stands on one foot with support”, which was more understandable on cognitive testing. Reliability not high.
	GRO23	While standing, does your child CATCH a ball and hold on to it, for at least a few seconds?	Same age attainment to GRO21 (Does your child stand on one foot without any support for at least a few seconds?), which requires fewer props.
Language	REC1	Does your child respond or startle when a loud sound is made?	Not related to age (poor developmental trajectory).
	REC2	Does your child respond to your voice or someone else’s voice even if you are not talking to the child directly?	Same age attainment to REC3 (Does your child turn his/her head toward your voice or some noise?) but less consistent across different countries
	REC7	When you say “no”, does your child stop what they are doing?	Same age attainment as adjoining items. Confusing item; not easy to ask on cognitive testing.
	REC18N	If you ask your child “Where is the boy/girl/baby/cow/chicken/etc.?” can your child POINT TO or look at the right picture?)	Same age attainment as REC10 (When you ask “where is the ball/ spoon/ cup/ cloth/ door/ plate/ bucket etc.” does your child look at or point to (or even name) the object? How many objects can your child identify?) but more variability between countries. Very variable direct vs. parent report
	EXP17	When looking at pictures or watching others, can your child tell you what ACTION is taking place (for example running, playing, sleeping etc.)	Same age attainment as adjoining items, and some countries not happy that this item was culturally acceptable.
	EXP18	How many objects can your child name?	Same age attainment as adjoining items, therefore no need for this item.
	EXP22	Can your child explain correctly what the following are used for? Cup (eating/drinking), spoon (eating), knife (cutting), matches (lighting fire, burning things), torch (light), broom	Same age attainment as adjoining items and some cultural differences across countries, making the item less consistent
	EXP25A	Does your child count three objects?	Same age attainment as adjoining items, therefore no need for this item.
	EXP28	Does your child know a song or rhyme from memory?	Attained at a later age, and confusing item for assessors
Socio-emotional	SE3	When your child is upset and you try to comfort him/ her does he/she calm down?	Not related to age (poor developmental trajectory).
	SE7	When you leave your child with a family member, does your child go with that person easily?	Not related to age (poor developmental trajectory).
	SE14	Does child pretend to drink from a cup, or eat with a spoon?	Not related to age (poor developmental trajectory).
	SE16	Does your child care for a doll or stuffed animal as if it were a person (for example by feeding and bathing it)?	Not related to age (poor developmental trajectory).
	SE24	Is your child easily distracted, that is has trouble sticking to any activity?	Not related to age (poor developmental trajectory).
	SE29	When child is very upset, can he/she calm self quickly?	Not related to age (poor developmental trajectory).
	SE30	Would you say that your child bullies or is mean to others at times?	Not related to age (poor developmental trajectory).
	SE32	When you send your child to get something, does he/she forget what he/she was supposed to get?	Not related to age (poor developmental trajectory).

* Please note the item numbers shown here are the item codes from the previous version of the tool.