Lindsay Lohan has become a model patient in rehab.

The 26-year-old actress - who is in the midst of a 90-day court-ordered stint in rehab after pleading ''no contest'' to lying to police about driving during a car crash last June - has wowed staff at the Betty Ford Centre in Rancho Mirage, California, with her new positive attitude and has been attending all of her group and one-on-one counselling sessions.

A source told gossip website that the 'Liz & Dick' star, who is in rehab for the sixth time, is taking her treatment seriously and has told friends that she is learning a lot about self-control and how to deal with reckless impulses.

Lindsay, who is sharing a room with two roommates, has also admitted that although the program is getting more complicated and emotional, she is not shying away.

She told friends that she is happy to have roommates because she doesn't want to be alone and is getting on well with both of them.

Lindsay was assigned a full team of carers - including a psychologist, dietician, chemical dependency technician and physician - who devised a tailored care plan for the actress at the beginning of her treatment, and she is also being kept busy with a wide range of activities.