Mark the sentences T (true), F (false), NS (not stated).
1. Lisa is doing her homework only while her eyes are fixed on the computer screen. _
2. She is doing five different things simultaneously. _
3. Her parents disapprove multi-tasking while studying. _
4. Multi-tasking influences negatively in four ways. _
5. Russell Poldrack describes the negative effect of multi-tasking.
6. The article is withdrawn from the journal of University of California. _