How many seconds should elapse for items 1-18 on the FW assessment?

The correct answer is that 10 seconds should elapse for items 1-18 on the FW assessment. This timing is important as it provides a structured limit for the evaluation, allowing each item to be completed within a set period. Adhering to this timeframe ensures that the assessment captures the child's ability to respond quickly, which is essential for measuring cognitive processing speed and efficiency. The specific 10-second interval is designed to gauge how well the child can access and apply their cognitive resources in a controlled manner, contributing to the overall assessment of their cognitive abilities.

The other options suggest longer durations, which may not align with the assessment's purpose of evaluating quick recall and response capabilities. A longer time could result in a different focus for the assessment, potentially skewing the data on the child's processing speed. Therefore, the 10-second window is crucial for maintaining the integrity and intent of the assessment.