What percent of all cases are found between an SD of +1 and an SD of -1 on a normal curve?

Your friend, Carrie, is concerned that her mother may be showing early signs of Alzheimer's disease. All of the following are good pieces of advice that you could offer to Carrie EXCEPT to:

A) keep the environment stable and predictable. B) respect her mother's "personhood." C) take her mother for a brain scan to look at individual neurons. D) seek help from an Alzheimer's support group.

What is systematic desensitization, and what is its purpose?

What will be an ideal response?