Joanna is a 36-month-old child enrolled in a treatment program for stuttering. The SLP is involving Joanna's parents and 5 year old brother in treatment activities. Every time Joanna's brother participates in a treatment activity, Joanna begins to stutter much more severely than she does when interacting with her parents. Which of the following actions is the most appropriate for the SLP to take next?
1) helping the parents devise strategies for limiting how often Joanna and her brother converse with each other at home
2) engaging Joanna in a role playing activity that seeks to identify how she would like her brother to interact with her during conversations
3) analyzing recorded conversations between Joanna and her brother to identify discourse factors that might affect the severity of Joanna's stuttering
4) teaching her brother to produce statements that support Joanna's attempts to talk