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 The article is withdrawn from the journal of University of California.