The Give a number task revisited
The Give a number task is used to measure what numbers a preschooler understands. In the task, the child has to give a specific number of objects. Based on the task, it is known that initially children can only give the first few numbers (first only number 1, a few months later 2, then 3, then 4) even if their counting list (known number words) is longer. Later, after an unspecified qualitative change, suddenly preschoolers can give all numbers in their counting list, and they become so called cardinality-principle-knowers.
In the current version of the task, (a) the numbers are asked up to 5 (because it is supposed that if a child knows 5, then she knows all other numbers in her counting list), and (b) with the so called titration method if a number is not known, then no larger numbers are asked (because it is supposed that up to the limit of the child’s number knowledge, the numbers are known relatively firmly, and beyond that limit numbers are not known at all).
We used a modified version of the task in which (a) 6 items were also asked (i.e., even if children knowing 5 should know 6), and (b) all numbers in this 1-6 range were asked three times, independent of the performance for smaller numbers. With this modified version of the task we found that:
- There are five-knowers, i.e., children who can give 5, but not 6, which is against the current view suggesting that after learning 4, children become cardinality-principle-knowers, and they can give any numbers that are in their counting list.
- Within a child, number knowledge decreases gradually as the numbers increase, instead of a sudden performance drop at a single value, therefore, the titration method together with the usual noise of the measurement may fail to measure the number knowledge reliably. Based on these results we suggest that the Give a number task should be modified. First, numbers should be asked for values larger than 5. Second, instead of the titration method, all numbers should be asked. However, it is still open that after conducting the task, how an index should be created to reflect number knowledge validly.
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Find the raw data of this study at osf.io.