In Experiments Testing Facilitated Communication (FC), When FC Practitioners Were

Multiple Choice

In experiments testing Facilitated Communication (FC) , when FC practitioners were not aware of the content of the message presented to autistic people, the communication of autistic people was not facilitated. This type of experimental control involved the:

A) presentation of a placebo control.
B) use of a wait-for-treatment control group.
C) facilitators being blinded to the experimental condition.
D) control of extraneous variables in the environment.