Matrix question

[DROBB]

I have a matrix question with three columns as follows with radio buttons:

social network uses: How often? Business or Personal?
Do you use Twitter yes No daily, weekly,... bussiness personal

Do you use MySpace Yes No daily, weekly... business personal

If they answer yes to the first column, i want to require the next two.
can I do that in a matrix?

[pwiesner]

It is not possible to create a matrix item that behaves as you have described. It might be possible to construct an item with similar functionality with the use of conditions.

You would need to split the matrix into two parts. Place the question asked in row one on page one of your survey. On page two of your survey you could create two matrix questions. One matrix would have rows two and three marked as required one matrix would now. Using conditional logic you could control which matrix was displayed to respondents.