What does HIPAA require psychologists to inform clients about?

The correct choice highlights the core requirement of the Health Insurance Portability and Accountability Act (HIPAA), which is to inform clients about how their personal health information may be used and disclosed. This law is designed to protect the privacy and security of individuals' health information, and ensuring that clients are informed about their rights and the ways in which their information may be handled is a fundamental aspect of that protection.

Under HIPAA, mental health professionals, including psychologists, must provide clients with a Notice of Privacy Practices. This document outlines how their health information can be used or shared, the clients' rights regarding their information, and the legal obligations of the psychologist. This transparency fosters trust in the therapeutic relationship and empowers clients to make informed decisions about their care.

The other choices, while relevant to aspects of psychotherapy or client experience, do not align with the specific mandates of HIPAA regarding client notification about personal health information usage.