# We give parents both ASQ-3 and ASQ:SE-2 at the same time.

Which ASQ:SE-2 questionnaire should be used if there isn't a questionnaire that corresponds directly to the child's age assessed with ASQ-3 (for example, 8 months)?

Mark E. Ting  
Jul 30, 2018  
2754 views

There are no gaps between age intervals for ASQ-3 and ASQ:SE-2 questionnaires so there is always a questionnaire available for children in the appropriate age ranges (1-66 months for ASQ-3 and 1-72 months for ASQ:SE-2). Even when there is not an ASQ:SE-2 questionnaire with the exact same age as an ASQ-3 questionnaire, there is still an ASQ:SE-2 questionnaire appropriate for the child's age. For an 8-month-old child, the ASQ-3 8 month and ASQ:SE-2 6 month would be used. The administration window for each questionnaire is listed on the cover sheet. For easy questionnaire interval selection, you can use the [online calculator](/content/free-resources/asq-calculator/index.html) or the free ASQ calculator apps in the Apple and Google Play stores.

#### Tags

[ASQ-3(195)](https://support.agesandstages.com/kb/tag/138) [ASQ:SE-2(123)](https://support.agesandstages.com/kb/tag/143) [calculator(8)](https://support.agesandstages.com/kb/tag/152) [ASQ Calculator app(4)](https://support.agesandstages.com/kb/tag/153) [age interval(12)](https://support.agesandstages.com/kb/tag/154)