Final answer:
It is false that it is unethical for an RBT to be both an interventionist and an informant on a skills assessment, as these roles are complementary in the field of behavior analysis. Also, the MMPI employs a series of true/false questions for personality assessment.
Step-by-step explanation:
The question of whether it is unethical for an RBT (Registered Behavior Technician) to be both an interventionist and an informant on a skills assessment can be clarified by understanding the role of an RBT. An RBT is typically responsible for implementing behavior-analytic services under the supervision of a Board Certified Behavior Analyst (BCBA). It is part of their job to collect data and report on the progress of the interventions they are implementing. There is no inherent ethical conflict in being both an interventionist and providing information for assessments because these roles are complementary and necessary for the successful application of behavior analysis services. The RBT's work as an interventionist directly informs their ability to accurately report on skills assessments. Therefore, the statement that it is unethical is false.
As for the question about which personality assessment employs a series of true/false questions, the correct answer is a. Minnesota Multiphasic Personality Inventory (MMPI). The MMPI is known for its true/false format and is widely used to assess various psychological conditions and personality attributes.